SYSTEM INSTALLATION
AND OPERATION MANUAL # 93-9a.
Revision 2.3 - 29 December 1999
Part Number: 02001430
This documentcontains confidentialand proprietaryinformationof Tinius Olsen Testing
MachineCompany. In considerationof the receiptof this document,the recipientagrees
not to reproduce,copy, use or transmit this document and/or the informationtherein
contained,in whole or in part, or to permitsuch action by others,for any purpose,except
with prior written permission of Tinius Olsen Testing Machine Company. All rights
reserved.
TINIUS OLSEN TESTING MACHINE COMPANY, INC.
Post Office Box 429, 1065 Easton Road
Willow Grove. Pennsylvania
19090-0429
USA
Table of Contents
Section 1 - Introduction
Section2 - Standard Operating Tools
Section3 - Weights
Section 4 - Glass Reference Thermometers
Section5 - Model MP993a Digital ControllerfTimer
Section 6 - OptionalAccessories
6.1
6.2
6.3
6.4
6.5
6.6
6.7
Programmable Piston Displacement Transducer (PPDT)
Actuating Switch Calibrator
Motorized Weight Support and Lowering/Lifting Device (MWLD)
Swing-Away Weight Platform
Go/No-Go Gauge (PIN 02001034)
OKIDATA Model 320-Dot Matrix Printer
MI-Printer AME Cable (PIN 90002871)
Section 7 - Set-Up and Installation
7.1
7.2
7.2
Unpacking the Instrument
Locating the Instrument
Leveling the Instrument
Section8 - OPTIONAL Programmable Piston Displacement Transducer (PPDT)
8.1
Installing PPDT Ordered with the MP993a
Section 9 - OPTIONAL Motorized Weight Support and Lowering/Raising Device
(MWLD) and Swing-Away Attachment
9.1
9.2
9.3
9.4
Preparation for use of FactoryInstalled MWLD
Manual Operation
Automatic Operation
Sequence of Operation
Section 10 - Installation of OPTIONAL OKIDATA Model 320-Dot Matrix Printer & Printer
Cable
Section 11 - Initial Start-Up
11.1 Enteringthe Date
11.1 Zeroing the PPDT
11.3 Setting the Temperature
11.4 Entering the Calibration Offset
11.6 Final Preparation
Section 12 - Global Setup Parameters Mode
Section 13 - Test Parameters Set-Up Mode
13.1 Generallnforrnation
13.2 Test Parameters Set-Up - ASTM D 1238 Procedure A Testing
13.3. Test Parameters Set-Up - ASTM D 1238 Procedure B Testing
Section 14 - Testing Polymer According to ASTM 01238 Procedure A (Manual Cut-Off)
14.1 Introduction
14.2 Configuring the MP993a Controller for Procedure A Testing
14.3 Test Procedure
Section 15 - Testing Polymer According to ASTM 01238 Procedure B (Automatically
Timed Flow Rate) when the Melt Density is known.
15.1
15.2
15.3
Introduction
Configuring the MP993a Controller for Procedure B Testing
Test Procedure
Section 16 - Testing Polymer According to ASTM 01238 Procedure B (Automatically
Timed Flow Rate) When the Melt Density is Unknown (Procedure for
Calculating the Melt Density of a Polymer)
16.1 Introduction
16.2 Configuring the MP993a Controller for Procedure B Testing
16.3 Test Procedure
Section 17 - Flow Rate Ratio Attachment
17.1 Introduction
11~2 Flow Rate Ratio Attachment Components
17.3 Installation of Components
17.4 Test Procedure
Section 18 - Cleaning Instructions
Section 19 - Preventative Maintenance
19:1
19.2
19.3
19.4
Cleanliness
PPDT Arm Length Adjustment
Motorized Weight Lowering Device (MWLD)
Miscellaneous
Section 20 - CalibrationNerification Procedure
20.1 General
20.2 Dimensional Verification
20.2.1 Suggested Equipment
20.2.2 Procedure
20.3 Weight Verification
20.4 CalibrationNerification of PPDT
20.4.1 Introduction
20.4.2 Mounting the Calibrator to the Extrusion Plastometer
20.4.2 Procedure
20.5 Temperature Verification
20.5.1 Suggested Equipment
20.5.2 Procedure
Section21 - Service Parameters Mode
Section22 - Communications
22'.1
22.2
22.3
22.4
22.5
22:.6
Overview-Serial Port Connection
Serial Printer Interface
RS-232/423ComputerInterface
RS-422ComputerInterface
CommunicationParameters:
MP993aCommunicationCommands
Section23 - Troubleshooting
23.1 System Warnings
23.2 System Errors
23.3 Electrical Checks
Section 24 - RecommendedSpare Parts List
Appendix A - Typical Assembly Drawings with Part List & Wiring Diagrams
Appendix B - Using Older Style Actuating Switches with the MP993a Controller
B.1. Using a MechanicalActuating Switch (Switch Type 1) with the MP993a
B.2
with the MP993a
Using a Flag-Programmable Actuating Switch (Switch Type 2) with the
MP993a Controller
~
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CAUTION: The instrument is heavy and care must be used when lifting the
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CAUTION: Read the instruction manual thoroughly before attempting to use this
equipment.
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CAUTION: This instrument has been designed to determine the melt flow index
property and other thermal processing properties of polymers. It is not intended for
any other use. Any attempt to use this instrument in any fashion other than its
intended use may damage the machine and/or harm the operator.
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CAUTION: This equipment is designed for indoor use only. It shall be used in a
controlled environment (temperature range 5°C to 40°C, maximum R.H. of 80%
at 31°C). Maximum operating altitude is 2,000 meters. The area that it is
located shall be free from vibrations.
[!]
LL\
CAUTION: Thermometers contain mercury. When a thermometer is being used,
extreme care should be taken not to heat the thermometer bulb too quickly or to
machine from the box or moving the machine. Always lift the machine by the
base plate. Never pick the machine up by the Motorized Weight Lowering
Device (MWLD) or by the furnace assembly.
exceed the temperature range of the thermometer, as the internal pressure will
cause it to break.
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CAUTION: Always check to make sure that the "Set Temperature" does not
exceed the range of the glass reference thermometer if one is being used.
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CAUTION: Do not use a sharp object to press any of the buttons on the Model
MP993a Controller, as this will puncture the membrane cover.
WARRANTY
The Tinius Olsen Testing Machine Company guarantees its products to be free from
defects in material and workmanship under normal use and service for which they were
intended, and under condition of proper maintenance for one year from date of receipt
of equipment.
CALIBRATION
Tinius Olsen certifies that this instrument meets all dimensional, temperature control
and performance specifications of ASTM D 1238. That specification recommends
verification of calibration at least once a year. Contact Tinius Olsen's Field Service
Department at (215) 675-7100 or call your local Sales & Service Representative to
schedule an appointment.
Section 1
1
1.1
Introduction
Basic Unit
The Tinius Olsen Extrusion Plastometer with microprocessor-based Model
MP993a ControllerfTimer is used for measuring the flow rates of thermoplastics.
The unit is a dead-weight piston Plastometer with which the extrusion rate of
thermoplastic materials through an orifice of specified dimensions is determined
under prescribed conditions of temperature and pressure in accordance with
ASTM Standard Test Method D 1238. With minor procedural modifications, the
MP993a can also meet ISO 1133, BS 2782, DIN 53735, JIS K7210 and other
similar standards.
The standard MP993a can be used for testing in accordance with other ASTM
methods, including D 2581, D 3364, D 4203, D 4507 and D 4550 (a special orifice
is required for D 3364). Other methods, such as D 2116,03159, D 3275 and D
3307 I require the optional corrosion resistant bore liner, orifice and piston foot.
The basic Plastometer (Melt Indexer), as described, may be used for Procedure
A - Manual Operation. With the addition of optional accessories, Procedure B Automatically Timed Flow Rate Measurement may be performed. All models can
be upgraded easily by the purchaser.
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1.2
CAUTION: This instrument has been designed to determine the melt flow index
property and other thermal processing properties of polymers. It is not intended for
any other use. Any attempt to use this instrument in any fashion other than its
intended use may damage the machine and/or harm the operator.
Single Unit Construction
Sturdy modular design includes housing for temperature and timing controls,
rugged upright for supporting the hardened steel test cylinder which is heated by
a precision dual zone controlled band heater, insulated and jacketed in an
aluminum housing, and a drawer for storage. A tool rack is provided for
convenient access to frequently used operating tools. The unit is semi-portable
and contains built-in provision for leveling the cylinder.
1.3
Precision Dual Temperature Sensor
A dual-zone platinum RTD Probe, that senses the cylinder temperature to within
:t 0.1°C in two locations, sends signals to the MP993a Controller, which
regulates the temperature of the upper and lower portions of the cylinder. The
temperature of the lower portion of the cylinder is displayed as the Actual
Temperature (AT).
1.4
Precision Dual Zone Band Heater
300 Watts (nominal) -- contains a special concentric heating element, which is
form-fitted and designed to uniformly maintain the required temperature. The
1-1
standard heater and furnace assembly is for use up to 450°C
1.5
Dimensions:
(Standard Unit) 51 cm (20 inches) wide by 38 cm 15 inches) deep and 58 cm
(24 inches) in height.
(Motorized Unit) 51 cm (20 inches) wide by 38 cm (15 inches) deep and 9 cm
(36 inches) in height.
Net Weight:
(Standard Unit) approximately 28 kilograms (62 pounds), not including any
weights or options.
1.6
ElectricalRequirements:
The basic Model MP993a Extrusion Plastometer is arranged for 115 Volts :t10%
or 220 Volts t;10%, 50/60 Hz, Single Phase. Check machine label for actual
electrical requirements.
115 Volt Units
Voltage
Current
Line
Frequency
Phase
Input
Fuse
,
Power
,
500 W
115 VAG +/- 10%
,
,
,
6A
SO/60HZ
Single
6A Fast Acting (Type F)
220 Volt Units
Voltage
Line
Current
Phase
Frequency
Input
Fuse
Power
500W
,
220 VAC +/10%
4A
SO/60HZ
Single
6A Fast Acting
1-2
(Type
F)
2 Section 2 - Standard Operating Tools
The following tools are included with each MP993a as standard equipment:
Refer to Figure 2-1 for an illustration. See Section 18 for cleaning instructions.
r--~lIMPORT ANT: All these tools are made of materials that are softer than the
~J
cylinder. this is to prevent any scoring or damage to the walls of the cylinder. If
the cotton cleaningpatchescannoteffectivelyclean the cylinderwalls. a .38
caliber.soft brassbrushcan be usedto helpcleanthe cylinder.
One (1)
Piston Assembly - consisting of a removable piston foot (PIN:
02001086); guide collar (PIN: 02001088); and a piston rod with
insulator (PIN: 02001085). This piston assembly weighs 100 grams
(not including the guide collar). It is considered the first 100 grams of
all test loads.
One (1)
Charging Tool (PIN:02001072),is used to tamp the test material into
the cylinder chamber (barrel or bore), and also helps to remove
some of the entrapped air when charging material. Provided with a
replaceable tip (PIN: 02001071).
One (1)
Specimen Tray (PIN: 02001076) is usually placed under the furnace
to catch the extrusion on the smooth side or turned over to the
slotted side to hold multiple cut-off samples.
Two (2)
ASTM D 1238 Orifice, stainless steel (PIN:02001030).
NOTE: Carbide orifice is also available (PIN: 02001031). Contact
factory for other dimensions & materials
One (1)
Level - consisting of level base, (PIN: 02001226) and circular level,
(PIN: 02001227) is used to check the Bore Alignment (Level) of the
cylinder. This level is made to fit over the end of the Piston Rod
Assembly, with the piston and orifice in the cylinder.
One (1)
Stainless Steel Funnel, (PIN: 02001091)- is used to help introduce a
sample of material into the cylinder.
One (1)
Orifice Remover, (PIN: 02001073) - is used to push the orifice out of
the cylinder from the bottom of the furnace.
One (1)
Cylinder Cleaning Tool, (PIN: 02001074)is used to clean the cylinder
after each test with the cotton cleaning patches.
One (1)
Cutoff Tool, (PIN: 02001090) this U-shaped tool is used to cut-off the
extruded sample at the bottom of the orifice.
One (1)
Orifice Drill, (PIN: 02001075) is used to clean material out of the
inside diameter of the orifice.
2-1
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8-1
].].-
1.0-
2.
1A-
-
1.B-~
3-
1.C-~'
Figure 2-1
Extrusion Plastometer Tools
~.
PistonRod Assembly
2.
3.
4.
A. Piston Rod
B. Guide Collar
C. Piston Foot
Charging Tool
Specimen Tray
Orifice Drill
2..'
5.
6.
7.
8.
9.
10.
11.
Orifice
Level
Thermometer(Optional)
Cutoff Tool
Funnel
Orifice Remover
Cylinder Cleaning Tool
3
Section 3 - Weights
Table 3.1 shows the weights that can be supplied for the standard test conditions
in ASTM D 1238. The Piston Rod and Piston Foot weigh 100 grams (less the
collar). All the weights are marked in grams. Tinius Olsen certifies that the
weights are accurate to within +/- 0.5% of the stamped weight.
EXAMPLE: To apply a Test Load of 2.16 kilograms you would use the 2,060
gram weight, adding in 100 grams for the piston rod assembly (less the collar).
Table 3-1 - Weight Loading for Typical Melt Flow Rate Tests
-
-
~
ASTM d 1238
TEST CONDITION
ReferenceOnl
rtESTLOAD ,=
I (GRAMS)
=
~~
121.600
=
~B~, E, L, RJ,-V&W
(tt&6
IJ&U
1M
I
1,050
110,000
-
USE
WEIGHT(S)
1+
[225 (PIN Q200W19)
_~060(P/~OZQ91023)
~
-
1.100 (PIN 0200tO22)
~
rs;7j!;!(PIN0200~)
2,400 (PIN 02001024) &
10,000 (PIN 020Q1029)
1,4.900(PIN 02001026)
6,600 (PIN 02001027)
4,900 (PIN 02001026)
10,000(P~ 020Q1029)
~(P/N
0200W~)
rii:909__CP/N
0200192Qt
rgoo(PINO~oo-'fO20)
]-1
I
PISTON
WEIGHT
(GRAMS)
325
2,160
1,200
3,800
12,500
A,D&K
1(3, P, S &X
I
1+ 100
,
+
+
+
+
100
100
100
100
~-JlQQ
[+1100
~
+
100
100
,+ 100
4
~
ill
Section 4 - Glass Reference Thermometers
Thermometers contain mercury! Extreme care must be taken not to heat the
thermometer bulb too quickly or to exceed the temperature range of the
thermometer,as the intemal pressurewill cause the thermometerto break!
In accordance with Section 5.7 of ASTM 01238-95, thermometers may not
necessarily indicate the temperature of a polymeric material 10 mm above the
orifice. However, they may be used as a reference for indirectly monitoring the
approximate temperature levels in the test cylinder. They possess a 4°C range
(:t 2°C about the stipulated temperature) and are graduated in O.2°C divisions.
Each thermometer ordered with a new machine is factory verified for use in this
manner. The data contained on the Tinius Olsen Calibration Data and Report form
indicates what the reference thermometer reads (in the thermometer well) when
the actual bore temperature at 10 mm above the orifice is measured at the set
temperature.
The actual bore temperature is determined with NIST traceable
equipment.
For example, a typical report might show:
Ma~~~o~ispIay~~
200.0°C
0.3 C
m
10~:!;!.~~~TemDTh~.A
~~ding~~
199.98 C
200.4°C
~
123456XX
Using this data, periodiccheckscan be madeto indirectlyverify that the bore
temperature is at the correct temperature. This is done by checking that the
thermometerreading in the thermometerwell is 200.4°C. If this is so, it follows
that the bore temperatureshould be 200.0°C. If the thermometerdoes not read
200.4°C,the melt indexerand the thermometerrequirerecalibrationand/or repair.
This procedureshould not be substitutedfor annual calibration/verificationof the
entire instrument.
To reduce the potential of breaking the reference thermometer during testing, it is
recommended the thermometer be removed (and safely stored) once the correct
operating temperature has been verified (see Section 20.5).
After the
thermometer has been removed, plug the thermometer well prior to testing. A %
inch diameter x 1 inch long round head bolt has been found satisfactory for this
purpose.
MercurySeparation
ExtrusionPlastometer thermometers have expansion chambers (see Figure 4-1).
The mercury in thermometers with contraction chambers tends to separate more
readily than straight capillary thermometers.
There is no known method to
ensure that the mercury in a thermometer will not separate when the
thermometer is subjected to shock.
This can occur either in transit or by
improper storage and handling.
4-1
Figure
4-1 - Typical extrusion plastometer thermometer
Before using any thermometer it should be examined very carefully for mercury
separation in the main mercury column, expansion chamber, contraction
chamber and bulb (mercury separation in the bulb will usually show as small
bubbles). All the mercury must be united. A check at the ice point will
immediately tell if there is mercury separation.
In a small Dewar flask or thermos bottle, mix powdered dry ice with methanol or
acetone. Holding the thermometer vertical, immerse about 3/4ths of the lower
section of the bulb into the mixture. DO NOT immerse the capillary or funnel
section above the bulb into the mixture. The main portion of the mercury will
retreat into the bulb and the separated portion should follow. When all the
f-2
,se~~A7~D
"f~Rf
,
PAD
Figure 4-2
£ 4ttOw IUtl
7- COOt
IN ORY 1('1"
Figure4-3
Figure4-4
IrvTR"'F'~WO
S4.s
Figure4-5
Figure 4-6
4-3
~
If gas bubbles are observed in the bulb of the thermometer (see Figure 4-5),
immerse the bulb of the thermometer in the mixture until all the mercury has
entered the bulb. Remove the thermometer bulb from the mixture and gently tap
the thermometer against the palm of your hand while holding the thermometer
horizontal with the bulb slightly elevated (see Figure 4-6).
Rotate the
thermometer while continuing to tap, allowing a large gas bubble to form and to
roll around the inner bulb wall and gather all the small bubbles as it rolls. When
all the small bubbles have been gathered, gently tap the bulb against the pad to
force the gas bubble to the top of the bulb. Allow the thermometer to warm up
on its own accord.
Always store unused thermometers in a vertical position.
r-":Alln
case of thermometer breakage while in the melt indexer. contact your
~
Hazardous Materials Coordinator prior to attempting the removal.
..:.
5
5.1
-
Section 5 Model MP993a Digital Controller/Timer
Introduction
The MP993a microprocessor-based ControllerfTimer is fully interactive with the
operator. It features a membrane keyboard; high visibility vacuum fluorescent
display; serial communications port; test parameter storage with power-up in last
used parameters; calibration information stored in battery-backed-up RAM;
indicating LED's; operating controls and other related features.
5.1.1 Two-Zone Temperature Control
The temperature controller features two-zone proportional, integral, and
derivative (PID) control, assuring spatial temperature variations of less than .t
0.25°C along the test area of the cylinder. Temperatures up to 450°C are
controlled and displayed to .t 0.1°C utilizing a dual-element platinum RTD in the
cylinder. The controller also has built-in temperature sensor failure. If the RTD
shorts out, power to the heater is interrupted and an error message is displayed.
5.
.2 Calibration
Offset
The "Calibration Offset" is a correction factor for the small difference in
temperature between the Actual Temperature (AT) displayed on the MP993a
Controller and a NIST (National Institute of Standards and Technology) traceable
temperature measuring device placed in the test area of the cylinder. In other
words, the "Calibration Offset" value entered adjusts the displayed temperature
to agree with the temperature standard in the cylinder.
Because of the wide range of temperatures that the MP993a Controller may be
used, it is necessary to enter a Calibration Offset for each test temperature (Set
Temperature).
The actual bore temperature was determined at the factory using a NIST
traceable RTO probe placed 10 mm above the upper face of the standard 8 mm
(0.315") long orifice. The digital electronic temperature display is also NIST
traceable. This procedure is described in the current version of ASTM 0 1238.
For new machines shipped with optional thermometers, a Calibration Offset
Settings worksheet will be provided showing the Actual Bore Temperature, the
Machine Displayed temperature, the Calibration Offset setting, and the
Thermometer Reading (while inserted in the thermometer well), along with the
serial number of each thermometer ordered with the machine. By using the
appropriate thermometer, the actual cylinder temperature can be indirectly
monitored by comparing the actual thermometer reading with the thermometer
reading and display temperature recorded on the Calibration Offset Setting sheet
when the machine was calibrated.
For new machines shipped without
thermometers, a Calibration Offset Settings worksheet will be provided for 190°
and 230°C. However, there will not be any thermometer reading.
5-1
5.1.3 Multiple Data Determinations (Captures)
The MP993a gives the operator the ability to make up to 5 individual flow rate
(melt index) determinations within a single sample charge when performing a
test to ASTM Procedure B. While this feature is not required by ASTM 01238, it
can be useful for checking the consistency of results and in improving accuracy
by isolating sources of error such as air bubbles and allowing the operator to
eliminate obviously flawed data. The multiple capture feature may be used with
any material, but it is most often used with materials that have flow rates greater
than 10 g/10 minutes. A typical example of the test parameters used for a multicapture test has been preprogrammed in Program #3 (see Table 13-2).
5. 1.4 Built-in Timer
Timing functions up to 9999 seconds in 0.01 second increments are available for
preheat timing, cut-off intervals, piston displacement timing, operating an
automatic weight support and lowering device as well as other optional features.
An audible alarm can be activated which will prompt the operator to perform
functions such as applying the load, cutting off the extrudate, etc.
5.1.5 Membrane Keyboard
The membrane keyboard allows the operator to communicate
with the
microprocessor in response to interactive prompts, which appear on the highvisibility vacuum fluorescent display. Up to 25 sets of testing parameters can be
stored for recall or the necessary values can be entered at test time. The
Parameters can be set up for conducting flow rate tests under both Procedure A
(Manual Cut-off Procedure) and Procedure 8 (Automatic Timed Procedure).
5.1.5.1 Display
Two-line vacuum-florescent
prompts and tests results.
display
for
displaying
software
5.1.5.2 Numeric Key Pad
For entering required numerical test data and for activating
specific functions and features as required.
5.1.5.3 Up (A) Key (numerickey 9)
Used to raise Motorized Weight Lowering/Lifting Device (MWLD).
5.1.5.4 Down (v) Key (numeric key 6)
Used to lower the MWLD.
5.1.5.5 CLEAR
Used to delete erroneous data entries.
5.1.5.6 MODE
Used to select operating and test set-up modes.
5
MP993a Display
Figure 5-1 - MP993a Controller
5.1.5.7 PROG
Used to select test set-up programs 1-25.
5.1.5.8 START
Used to start tests.
5.
.5.9 ENTER
Used to confirm and store data entry.
5.1.5.10Heater IndicatorFlashing indicator designates heater operation
5.1.5.11 Switch Indicator
When indicator is lit, the Programmable Piston Displacement
Transducer (PPDT) is in operation.
5-3
Prompt Driven Operation
The selected program prompts the operator to enter the necessary information
when starting a test, alerts the operator to perform tasks that may be necessary
during the test, prompts for any information that might be necessary after the
test, and then calculates and displays test results.
5. 1.7 Test Set-Up and Storage
The MP993a Controller can store up to 25 different sets of test parameters,
allowing operators to configure the MP993a Controller for the types of materials
that are tested in the laboratory.
Test Results
For Procedure A type tests, the Flow Rate (Melt Index) is calculated and
displayed for each manual cut-oft. When Procedure B type tests are performed
using the optional Programmable Piston Displacement Transducer, the Flow
Rate (Melt Index), apparent Shear Stress, Shear Rate and Viscosity, and
Volumetric Flow Rate can be selected for calculation and display. A subroutine
for calculating the Melt Density of the Resin at Test Temperature is also
provided.
5.1.9 CommunicationsPort
The test information and results can be sent directly to an optional dot-matrix
serial printer or the machine can be interfaced to a computer utilizing the serial
com-munications Port (RS-422/423/232 protocol) provided as standard. Up to
ten machines can be interfaced to a single computer.
5-4
6 Section 6
6.1
Optional Accessories
Programmable Piston Displacement Transducer (PPDT) (PIN 02001416)
The Programmable Piston Displacement Transducer (PPDT) is illustrated in Figure
123A-8 of Bulletin 123A-MI, for conducting Procedure B - Automatically Timed Flow
Rate Measurement tests in accordance with Procedure B of ASTM D 1238, ISO 1133,
DIN 53735, JIS K7210 and other similar methods. The PPDT utilizes a precision optical
encoder to monitor piston position and operate the timer in the MP993a
ControllerfTimer. The Starting Positions and Piston Travel Distances for up to five (5)
timed distance captures can be preprogrammed into the MP993a Controller! Timer. Up
to nine timed Piston Travel Distance captures can be made when a computer and Melt
Flow for WindowsTMsoftwareis used.
Actuating Switch Calibrator (PIN 02001262)
Used for verifying and calibrating the actual piston travel distances measured by the
Programmable Piston Displacement Transducer (PPDT). It can also be used to verify
and/or calibrate older style Mechanical and Programmable Actuating Switches.
However, the instructions in this Section only cover the verification/calibration of the
PPDT on a melt indexer equipped with a MP993a Controller/Timer. Contact the factory
for instructions for verification/calibration when using other types of controllers and
actuating switch types. The Calibrator consists of a 0 to 2" barrel-type micrometer head,
which has a resolution of 0.001", and a mounting bracket. The mounting bracket
permits checking the switch while it is mounted on the machine. The standard
calibrator is shipped fully assembled. A wooden storage box is also included.
Motorized Weight Support and Lowering/Lifting Device (MWLD) (P/N 02001404)
The Motorized Weight Lowering Device (MWLD) is illustrated in Figure 123A-15 of
Bulletin 123A, with an Optional Swing-Away Support in Figure 123A-17 and with the
optional Flow Rate Ratio Attachment Package in Figure 123A-16. The MWLD may be
operated manually by a pushbutton on the keyboard, or it may be programmed to
automatically apply the load after a selected pre-heat period (Release Time) has
elapsed on the Timer for automatically timed tests. The MWLD is recommended
whenever high loads are being used.
6.4
Swing-Away Weight Platform(PIN 02001248)
Illustrated in Figure 123A-17 of Bulletin 123A-MI. Used with the optional Motorized
Weight Support and Lowering/Raising Device to make cleaning the bore easier.
Go/No-Go Gauge (P/N 02001034)
The Go/No-Go gauge is used to check the inner diameter of the standard ASTM
01238 orifice (die) for compliance to the test method requirements.
~-1
OKIDATA Model 320-Dot Matrix Printer (PIN 02001429)
Includes serial interface card, and the MI-Printer AME Cable (see below) for connecting
to the serial communications port on the MP993a Controller.
MI-Printer AME Cable (PIN 90002871)
A 25 pin Male to 25 pin Male, 10' long cable, for connecting an optional Serial Printer to
the serial communications port on the MP993a Controller. Order this option if printer is
supplied by the end user.
6.8
Flow Rate Ratio Attachment Package (PIN 02001418)
Illustrated in Figure 123A-16 of Bulletin 123A-MI, for use with Extrusion Plastometers
equipped with Programmable Piston Displacement Transducer and Motorized Weight
Support and Lowering/Raising Device. This package consists of:
a) Load change (lift) pins and extended safety uprights and split collars for weight
containment.
b) Extrudatepush out plate - used with MotorizedLowering Device to speed the
removalof remainingpolymerat the end of the test.
c) Weight change height setting adjuster for setting up typical programs.
d) Weight set consistingof 2060 g (PIN 02001023),7840 g (PIN 02001250)and
11,600g (PIN 02001251)for applying loads of 2.16, 10 and 21.6 kg. (Other
load combinationscan be supplied- consultfactory.)
Using the above components, flow rates can be determined under up to three different
loads using the following automated sequence. After charging the test material and
lowering the weights over the top of the piston rod, the operator starts the preheat period.
At the end of the preheat period, the MWLD lowers and applies the selected total load.
The time for the first selected piston travel is measured and stored. As the test
progresses, the load on the piston is reduced automatically and, after a selected distance
to allow for equilibration of flow, the time for the selected second piston distance is
measured and stored, and a similar sequence can be selected to obtain a measurement
under a third load. At the end of the test the flow rates and other selected data are
calculated by the microprocessor for readout on the display.
6-2
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FIGURE 2 - BASIC MODEL MP 993a EXTRUSION PLASTOMETER
1. MP 993a Temp. Controllerrrimer
7. Piston Rod Guide Collar
2. Accessory Drawer
8. Furnace Assembly
3. Actuating Switch (Optional)
9. Tooling Rack
4. Thermometer Protector Bracket
10. Furnace Assembly Support.
5. Weight (s)
11. Specimen Tray
6. Piston Rod Assembly
12. Leveling Feet (4)
6-3
7 Section 7 - Set-Upand Installation
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CAUTION: This equipment is designed for indoor use only. It shall be used in a
controlled environment (temperature range SoCto 40°C, maximum R.H. of 80%
at 31°C). Maximum operating altitude is 2,000 meters. The area that it is
located shall be free from vibrations.
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CAUTION: In some instances an exhaust system may be used to remove the
excess heat and/or odors released during a test. These instructions do not
addressall of the safety concernsrelatedto ventilationof fumes producedduring
normaltesting operations.
7.1
Unpacking the Instrument
7.1.1 Locate the packing list and carefully uncrate and remove all packing
material from around the machine. Carefully remove the machine from the crate.
Check all parts and accessories against the packing list to insure that nothing is
missing.
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7.2
CAUTION: The instrument is heavy and care must be used when lifting the
machine from the box or moving the machine. Always lift the machine by the
base plate. Never pick the machine up by the Motorized Weight Lowering
Device (MWLD) or by the furnace assembly.
Locating the Instrument
7.2.1 Place the machine on a hard. level surface Placethe tools on the rack
on the right hand side of the machine.
7.2.2 The basic machine is shipped fully assembled. The RTD Temperature
Probe for the temperature controller must be inserted into the small rear well of
the furnace assembly.
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CAUTION:The RTD probe must be in position in order to control the temperature.
If it is not in place. thermal runaway will occur and the instrument will be severely
damaged.
7.2.3 A reference thermometer may be placed into the forward well for testing, if
desired. Be sure that the proper temperature thermometer is selected. The
thermometer shield should always be rotated into its protective position above
the thermometer to minimize the risk of breaking it.
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NOTE: To reduce the potential of breaking the reference thermometer during
testing, it is highly recommendedthe thermometeris removed(and safely stored)
once the correctoperatingtemperaturehas beenverified(see Section20).
7-~
After the thermometer has been removed, plug the thermometer well prior to
testing. A y. inch diameter x 1 inch long round head bolt has been found
satisfactory for this purpose.
[4J
CAUTION: Exceeding the temperature range of any thermometer will cause the
thermometer to break.
NOTE: During shipment,the mercury column in the thermometercan separate,
causing the thermometerto read incorrectly. It is sometimesdifficult to see this
separationif the separatedmercuryis in the expansionchamber at the top of the
bore of the thermometer. A reasonablysafe way of checking the thermometeris
by immersingit in a water and crushedice bath. A zero reading should be noted
on the stem of the thermometerif correct. Refer to Section 4 for methods of
reunitinga mercuryseparation.
7:J
Leveling the Instrument
7.3.1 Insert the orifice in the bore, then insert the piston.
7.3.2 Place the precision level over the top of the piston. The piston rod must
be straight and the base of the level seated cleanly on the shoulder of the piston.
7.3.3 Level the machine using the screw adjustable feet. Tighten the lock nuts
on the feet after leveling.
7.3.4 Remove the level from the piston and store it in a safe place.
1"'"2
8 Section 8 - OPTIONAL Programmable Piston Displacement
Transducer (PPDT
8.1
Installing PPDT Ordered with the MP993a
8.1.1 Tools Required:
300 mm (12 inch) straight edged scale or ruler (not supplied)
3/32 and 3/16 inch hex keys (supplied)
8.1.2 Remove the shrink-wrap that secures the PPDT during transit. Be careful
not to bend the PPDT arm or move any of the knobs on the PPDT.
8.1.3 Mount the switch on the slotted mounting bracket as shown in Figure 8-1.
Tighten the spring loaded Switch Box Mounting Screw until the PPDT is secure
on the bracket, but still able to slide freely along the slot.
8.1.4 Mount the bracket to the furnace support as shown in Figure 8-1 (rear
view). The furnace support is located on the back of the machine behind the
furnace canister. Secure the bracket using the two 1!4"-20 screws provided. Do
not tighten these screws completely at this time.
8.1.5 Using the straight edge as a guide, adjust
the bottom of the PPDT is even with the weight
Be sure that the orifice is in the bore and the
orifice. Once the PPDT is in position, tighten
the height of the bracket so that
support shoulder of the piston.
piston is resting on top of the
the two %"-20 bracket screws
completely.
8.1.6 To verify that the switch is in the proper position, turn the MP993a on,
making sure to initialize (zero) the PPDT (see Section 15.2.2). Repeatedly press
the [ENTER] key to advance to the operating screen (see Section 11.5). (Note:
If the "Set Temperature" screen is encountered, enter "20" to prevent the cylinder
from heating up.) Place a weight on the piston, then enter the Test Parameters
Set-Up Mode by pressing the [MODE] key followed by the "8", "3" and "4" keys in
succession.
Advance to the "Position/Arm Length" screen by repeatedly
pressing the [ENTER] key. With the arm of the PPDT positioned under the
weight, the position display should read 0 +/- 1.25 mm (0.05"). If not, adjust the
height of the bracket accordingly.
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NOTE: The PPDT arm and the encoder in the PPDT are very sensitive and can
easily be damaged by misuse or abuse. When moving the arm by hand. never
exceed the upper or lower stops. Never allow the arm to fly up from the down
position. The arm must be gently guided back to the upper position using a finger.
8-1
8.1.7 To verify that the PPDT ann is in the correct starting position,first remove
the weightfrom the rod. The PPDTann will move upwarduntil it is stoppedby the
adjustingscrew located on the top of the switch housing (see Figure 8-1). The
position display should read at least 1.5 mm (0.06") above the start point for
Capture 1 as programmedfor the type B test (see Section 13.3.12). For the
standard ASTM D 1238 starting position of 46 mm (1.81"), the adjusting screw
should be set to hold the PPDT ann at 47.5 mm (1.9") or above. When finished,
pressthe [ENTER]key until the operatingscreen appears.
8.2
Field Installation of PPDT on Existing Melt Indexers with MP993a Controllers
Note: Instructionsin this section only cover the installationof the PPDT on new
style chassis. These chassiswere shipped after November 1998 and are most
readily identified by the CE mark located on the side of the chassis. Contact
factoryfor installationinstructionson older models.
Tools Required:
300 mm (12 inch) straight edged scale or ruler (not supplied)
3/32 and 3/16 inch hex keys (supplied)
8.2.2 Mount the switch on the slotted mounting bracket as shown in Figure 8-1.
Tighten the spring loaded Switch Box Mounting Screw until the PPDT is secure
on the bracket, but still able to slide freely along the slot.
8.2.3 Mount the bracket to the furnace support as shown in Figure 8-1 (rear
view). The furnace support is located on the back of the machine behind the
furnace canister. Secure the bracket using the two 1!4"-20screws provided. Do
not tighten these screws completely at this time.
8.2.4 Using a straight edge as a guide, adjust the height of the bracket so that
the bottom of the PPDT is even with the weight support shoulder of the piston.
Be sure that the orifice is in the bore and the piston is resting on top of the
orifice. Once the PPDT is in position, tighten the two ~"-20 bracket screws
completely.
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NOTE:The PPDT arm and the encoder in the PPDT are very sensitiveand can
easily be damaged by misuse or abuse. When movingthe arm by hand, never
exceed the upper or lower stops. Never allow the arm to fly up from the down
position. The arm must be gentlyguidedbackto the upper positionusing a finger.
Disconnect the melt indexer from the power source,
8.2.6 Remove the cover plate on the left side of the console.
8.2.7 Remove the MP993a controller by removing the 4 screws that hold it in
place, then carefully pull it forward from the console.
8-3
8.2.8 Remove the screws from the lower rear of the right-side panel of the
console and gently pull this portion of the panel out. Pass the connector. electrical
cable and cable clamp from the PPDT through the opening.
8.2.9 Positionthe cable in the notchedarea of the panel. Fasten the cable to the
base plate using the cable clamp (a hole is pre-drilledin the base plate for the
screw of the clamp). Allow sufficientcable betweenthe console and the PPDT to
permitthe PPDTto be easily movedto its mostforwardposition.
8.2.10 Plug the PPDT into the mating connector located on the rear of the
MP993a controller. Note that the interlocking tabs on the plug must be positioned
toward the locking tabs on the connector.
8.2.1
Replace the cover screwsand reinstallthe MP993acontroller.
8.2.12 The MP993a controller will need to be configured with the calibrated arm
length of the PPDT. The arm length was determined at the factory and will be
noted on a tag attached to the PPDT when it was shipped. Restore power to the
MP993a controller and advance to the operating screen (see Section 11.5). Enter
the Global Setup Parameters Mode (see Section 12), and advance to the the
"Switch/Pick-Up Type" screen and enter "3". Proceed to the "Delay Time" screen
and enter "0.01", the advance to the "Position/Arm Length" screen and enter the
calibrated arm length value. Press the [ENTER] key repeatedly to return to the
operating screen.
NOTE: If there is no calibration value available, it will be necessary to perform a
calibration of the PPDT. Refer to Section 20 for guidance.
8.2.13 Switch the power off, wait a few seconds, and then restore power to the
unit. Proceed as described in Sections 8.1.6 and 8.1.7.
8-4
9 Section 9 - OPTIONAL Motorized Weight Support and
Lowering/Raising Device (MWLD) and Swing-Away Attachment
9.1
Preparation for use of Factory Installed MWLD
9.1.1 Install the weight retaining support rods provided with the MWLD. The
rods are used to safely contain the weight(s). When using 3" diameter weights,
three (3) rods are threaded into the inner tapped holes of the weight platform in a
triangular pattern.
9.1.2 For larger diameter weights, all four of the rods should be installed,
9.1.3 Nofurtherinstallation is necessary for the Swing-Away Attachment.
Manual Operation
9.2.1 Disable the automatic operation of the MWLD by changing the test
parameters if necessary (see Section 13.3.14).
9.2.2 Use the [UP] and [DOWN] keys on the MP993a Controller to raise or
lower the MWLD. NOTE: The [UP] and [DOWN] keys will not operate when a
numeric entry is expected by the MP993a Controller.
Automatic Operation
9.3.1 Enable the automatic operation of the MWLD by changing the test
parameters if necessary (see Section 13.3.14).
9.3.2 During a test when the Release Time has counted down to zero, the timer
will automatically operate the MWLD down, for approximately 12 seconds, to its
bottom position. The [UP] or [DOWN] keys will interrupt the 12 second run time.
9.3.3 The [UP] or [DOWN] keys can be used at any time to raise or lower the
MWLD, except when the MP993a Controller display is requesting a numeric
input.
Sequence of Operation
9.4.1 With the orifice and Piston Rod Assembly in the cylinder, fully lower the
MWLD to its bottom position. Place the desired amount of weight on the piston
rod.
9.4.2 Raise the MWLD and weight(s)
weight
up fully to the top position.
was lifted from the piston rod by the MWLD,
9-1
it is now properly
Since
the
positioned
on the support platformso that it will contactthe piston rod properly.
9.4.3 After the desired amount of material is charged, the operator should use
the ChargingTool to compressthe material and then replace the Piston Rod. If
the melt indexer is equipped with a PPDT, or an older actuating switch is to be
used, it should now be slid into test position so that its arm is under the weight,
but not in contact with the piston rod. Press the [START] key to start the
Release (Elapsed) Time counter immediatelyafter the material to be tested is
charged into the cylinder.
9.4.4 Manually lower the MWLD and weight(s) over the end of the piston rod.
Alternatively. a value may be entered for the Pre-Test Lower Time in order to
have the weight(s) automatically lowered a predetermined distance (See
Section12.2.11). ALWAYS MAKE SURE THAT THE TOP OF THE PISTON
ROD IS ENGAGED INTO THE HOLE OF THE BOTTOM WEIGHT.
9.4.5 If the "Auto Weight Lower" function has been enabled in the Type B test, a
solid state relay activates the motor for approximately 12 seconds and lowers the
MWLD to the bottom of its stroke when the "Release Time" counts down to zero.
If not, use the [DOWN] key to lower the MWLD.
9.5
Clutch Adjustment
9.5.1 When looking at the front of the melt indexer, the clutch on the right side
acts as a brake to support the load when the motor is off. The clutch on the left
side allows the motor to continue spinning when it reaches the end of its stroke
so that the motor does not stall and burn out.
9.5.2 Adjust the right clutch so that it is just tight enough to support the heaviest
weight (not to exceed 23 kg (50 pounds» used on the MWLD. The clutch must
slip when the least bit of added weight is applied. If this clutch is too tight, the
MWLD may not be able to raise the weight and/or the motor, gear reducer, or
clutch may be damaged.
9.5.3 Adjust the left clutch so that the MWLD will just lift the heaviest weight
without slipping. The clutch must slip when the end of stroke in either direction is
reached. Over-tighteningof this clutch may cause damage to the motor, gear
reducer,and/or clutch.
.9-2
10 Section 10 - Installation of OPTIONALOKIDATA Model 320-Dot
Matrix Printer & Printer Cable
10.1 Connect one end of the cable (PIN 90002871) to the serial port at the side of the
machine and connect the other end to the serial port on the printer.
10.2 Configurethe MP993a and printer as covered in Section 22.
l'O~ll
11 Section 11 - Initial Start-Up
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Caution: Prior to shipment, the bore of the machine is coated with oil to prevent
rust from forming. When the machine is first turned on, it is normal for the
machine to "smoke" as the bore comes to temperature and the oil residue bums
off. To reduce the amount of smoke that forms, clean the bore thoroughly before
turning the machine on. Be sure that a ventilation system is operating at this
time.
The MP993a is now ready for operation. Connect the unit to a suitable power
supply (500 WATT MINIMUM) and turn the Power Switch "ON".
Entering the Date
When the MP993a is turned on, the controllerwill display the EPROM program
version, then it will prompt the user to enter the date. Entering the date is only
necessaryif the optional dot matrix printer is to be used. The MP993adoes not
have an internal clock and does not store any test results internally. The
suggested way of entering the date is the MM-DD-YY(-~at, however, any
combination of up to eight (8) characters may be entered. After entering the
date, press the [ENTER] key. To skip to the next screen, simply press the
[ENTER] key. NOTE: The MP993a does not have an internal dock, therefore
there is no problemwith Year 2000 compliance.
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CAUTION: Do not use a sharp object to press any of the buttons on the Model
MP993a Controller. as this will puncture the membrane cover.
Zeroing the P~DT
11.2.1 If the unit is equipped with the optional PPDT, the MP993a Controller
will prompt the user to "LOWER PICK-UP, PRESS ENTER-. This is necessary
becauseit gives the encodera referencestarting point.
11.2.2 Carefully slide the PPDT forward until it stops.
11.2.3 Gently press the arm down until stops, - DO NOT FORCE THE ARM
ANY FURTHER - hold it in position, then press the [ENTER] key.
11.2.4 Gently releasethe arm and allow it to return to its up position
Settingthe Temperature
The MP993a will then prompt "Set Temperature- - Either enter a fixed
temperature between 0 and 450°C or press the [START] key to accept the
default temperature on the display.
11-1
~
TEST TIP: If the operator is unfamiliar with melt index testing procedures and
machine operations, it might be beneficial to turn off the heaters at this point. If
the [START] key is pressed, and the "Set Temperature" screen is encountered,
enter "20" to prevent the heaters from operating. If the "Set Temperature" screen
is not encountered, turn the heaters off temporarily, by pressing the [MODE] key
and then the 8, 5 and 2 keys in succession. Then scroll through the screens by
pressing the [ENTER] key until the display reads "Set Temperature". Select a
temperature near the ambient temperature ("20") and then press the [ENTER]
key until you return to the starting screen.
NOTE: The "Set Temperature" and "Calibration Offset" prompts will appear at
this point if the "At Program Initiate" option was selected in the Test Parameters
Set-Up Mode (see Section 13).
Entering the Calibration Offset
The MP993a will then prompt the operator to enter the "Calibration Offset". Enter
the offset value that corresponds to the desired test temperature.
The
Calibration Offset value is found on the yellow Calibration Offset Settings
worksheet that was supplied with the machine or that was supplied by the
Calibration Engineer at the last calibration/verification service.
Press the
[ENTER] key twice to confirm the value that was entered. Refer to Section 5.1.2
of these instructions for more information on the Calibration Offset value.
The MP993a Controller will now display a screen that resembles the following:
Actual Temperature
Release Time (preheat)
AT 23.9
RT 360.00
SP
190.0
PH 1
Set Temperature
Program Number
At this point, the machine is ready to accept programming for the testing. The
heater lights should be on and the actual temperature (AT should be increasing.
Final Preparation
~ \ \~ 11.6.1 If the melt indexer is equipped with a MWLD, raise the weight platform
\~\\' by pressing the [UP] key.
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11.6.2
If the
MWLD
equipped
withplatform
the Swing-Away
Platform
pull the
knob
at the
rear
of theisMWLD
weight
up to release
latchoption,
and swing
weight platform to the side.
~
11.6.3 Thoroughly clean the inside of the cylinder and orifice (see Section 18
for Cleaning Instructions), then drop the orifice into the barrel. The orifice should
fall freely to the bottom of the cylinder with an audible click. If not, remove the
orifice and visually inspect the orifice and cylinder for any defects or obstructions.
Clean the bore and orifice again if necessary. It is imperative that the bore has
a mirror finish and that no residue remains on the outside or the inside diameter
of the orifice.
t1L2
12 Section 12 - Global Setup Parameters Mode
12.1 The Global Setup Parameters are global in nature, meaning that these parameters
are used with ALL testing procedures and ALL 25 programs. Enter the Global
Setup Parameters Mode by pressing the [MODE)key followed by the numbers 8,
3, and 4 in succession. When the Global Parameters Mode is activated: the
following questions are asked in order to set up the machine for operation:
12.2.1. "Inches I mm" - Enter a "1" to work in inches, enter a "2" to work in
millimeters. All numbers are stored internally in millimeters. As a result some
rounding off differences may be noticed if you work in inches. The round off
difference, percentage-wise, is generally very small. To minimize round off
differences, use millimeters.
12.2.2 "Alarm Active" - Enter a "0" to turn off the alarm that sounds at the end
of the ReleaseTime. Entera "1" to activatethe alarm.
12.2.3 "Printer I Computer" - Enter a "1" to have the MP993a work with a Serial
Printer and print test reports. Enter a "2" to use the MP993a with a computer
program such as Melt Flow for WindowsTM.
12.2.4 "Offset Difference" - This value is used to make the temperature uniform
along the length of the barrel. Entering a positive number in degrees C will
increase the temperature of the upper zone of the barrel in respect to the lower
zone by the entered number of degrees. A number other than 0.0 is necessary to
compensate for small differences in the RTD's in the dual temperature probe. Do
not enter anything other than 0.0 unless a temperature difference is measured
between the top and bottom zones.
12.2.5 "High Temp Alarm" - Enter a number in degrees C, which is no higher
than 455°C. When this temperature is reached, the MP993a Controller will
remove power from the heaters and display ERROR Code # 16 or 17. (Refer to
Section 23.2 for more information on ERROR Codes)
12.2.6 "Switch/Pickup Type" - The MP993a is designed so that it can work with
three different types of switches, the two older style switches and the new
Programmable Piston Displacement Transducer (PPDT). Enter a "1" for operation
with an older mechanical switch. The mechanical switch is round and has a clear
plastic case. Enter a "2" for operation with a flag programmable switch. A flag
programmable switch is rectangular in shape and has a slot in the top for inserting
flags. The flags are used to set the switch for various piston travels. Enter a "3"
for operation with a PPDT. A PPDT is square in shape. Note: with Switch Types 1
and 2, one must be very careful that the piston travel entered in a program
matches the piston travel that the switch is set up for. If the Switch Type 1 or 2 is
selected, Starting Points will not be asked.
l~,~l
12.2.7 "Delay Time" - This is used for switch "debounce".
It is a correction
factor for any stray vibrations that may occur. If you have a Programmable Piston
Displacement Transducer (Switch Type 3), use 0.01. If you have Switch Type 1 or
2, enter 5.0 (Note: shorter times may be necessary, if you are testing material with
high flow rates and short piston travels). The maximum delay time is 10 seconds.
The delay time works differently for different types of switches.
12.2.7.1 Type 3 Switch (PPDT) - If, during the "Delay Time" at the
beginning of a capture, the PPDT indicates that the piston has not
reached its "Start Capture Position" the capture time for that capture is
reset. The audible alarm at the start of a capture occurs at the end of the
delay time. The display of time for a capture begins counting with the
delay time. After the end of a capture, if the encoder indicates that the
end of the capture has not been reached during the "Delay Time", the
capture time is incremented to include all time from the false end of the
capture. The double beep at the end of a capture occurs at the end of the
delay time. The capture time is the time that elapses from the last time
the encoder indicates the start capture point is reached until the last time
that the encoder passes through the end of the capture. The Capture
Time must be longer than the "Delay Time". In the case of captures which
occur sequentially, if the encoder indicates the transition has not been
reached after it indicates that it has, the time is added to the preceding
capture and the ensuing capture time is reset.
12.2.7.2 Type 2 Switch (Programmable Flag) - At the start of a capture,
a switch closure which occurs for less than the "Delay Time" is ignored
and the capture time starts over at zero. The beep at the start of a
capture occurs at the end of the delay time. The display of time for a
capture begins counting with the delay time. At the end of a capture, an
opening of the switch which occurs for less than the "Delay Time" will not
stop the counter. The double beep at the end of a capture occurs at the
end of the delay time. The capture time is the time that the switch is
closed which is longer than the "Delay Time".
12.2.7.3 Type 1 Switch (Mechanical) - At the start of a capture, a switch
opening which occurs for less than the "Delay Time" is ignored and the
capture time starts over at zero. The beep at the start of a capture occurs
at the end of the delay time. The display of time for a capture begins
counting with the delay time. At the end of a capture, a closure of the
switch which occurs for less than the "Delay Time" will not stop the
counter. The double beep at the end of a capture occurs at the end of the
delay time. The capture time is the time that the switch is open which is
longer than the "Delay Time".
12-2
12.2.8 "Position/Ann
Length" - This parameter is only used if the melt indexer
is equipped with a Programmable Piston Displacement Transducer (Switch Type
3). It is used to calibrate the Programmable Piston Displacement Transducer. The
position from the Programmable Piston Displacement Transducer is displayed and
updated as new arm lengths are entered. The correct "Arm Length" is entered
prior to shipment from the factory. The entered value should only change when
required by recalibrated.
12.2.9 "Number of Zones" - If the MP993a controller is used with older style
probes and heaters which only had a single zone control, enter a "1". The
standard MP993a Extrusion Plastometer comes with a dual zone heater and a
dual zone probe. A "2" is the correct setting for a MP993a Extrusion Plastometer.
12.2.10 "Intensity Adjust" - Enter a number between 50 and 250. The higher
the number the brighter the display but the shorter the display's life. A setting of 50
usuallyworkswell in most cases.
12.2.11 "Pre-Test Lower Time"
- This is a specialfeaturethat allowsthe operator
to positionthe weight loweringdevice at the same place at the beginningof each
ProcedureB test. This is accomplishedby enteringa time, in seconds,which the
weight-loweringdevice is to run. If a number other than 0 is entered, when the
[STARll key is pressed at the beginningof a Type B test, the weight-lowering
device will run down for the entered amount of time. This may be interruptedby
pressingeither the [UP] or [DOWN] keys. The weight-loweringdevice travels at
about 1 inch per second. The weight-toweringdevice must be at its uppermost
positionwhen the [STARll key is pressed,for repetitivepositioning.
12.2.12 "Device Address" - When connecting more than one Extrusion
Plastometerto a single computerusing a RS-422Interfaceand Tinius Olsen Melt
Flow for Windows software, each plastometer must have a different address
between0 and 9.
12-~I
-
13 Section 13 Test Parameters Set-Up Mode
13.1 General Information
13.1.1 Test parameters are bits of information which the microprocessor must
know in order to perform a melt index test, i.e. test temperature, weight loading,
etc. Test parameters vary with the material being tested. Twenty-five (25) test
programs may be configured, then stored in the microprocessor for later use.
13.1.2 When this machine was originally shipped, the first four programs were
set up at the factory as examples and are shown in Table 13-2. Do not change
these programs until you fully understand the operation of the MP993a
Controller.
13.1.3 The test parameters in a program may be read without being able to
change them by pressing the [MODE] and [PROG] keys together. If a printer is
connected, holding these keys down will cause all the parameters of that
program number to be printed.
13.1.4 Select a program by pressing the [PROG] key and entering a number
between 1 and 25. (Note: you may want to avoid using Program Number 25 if
you have Melt Flow for WindowsTM as Program Number 25 is modified by the
Melt Flow for WindowsTMprogram.) Press the [ENTER] key until the Operating
Screen is displayed. The Program Number that was selected should now be
displayed in the lower right hand corner of the operating screen.
13.1.5 To modifythe selected program, enter the Test Parameter Programming
Mode by pressing the [MODE] key followed by the 8, 5, and 2 keys. A series of
questions will be asked and a default value will be displayed in most cases. The
first screen to appear will be the question "Test Type". The remainder of the
questions asked will depend on whether it is a Procedure A Test (manual cutoff)
or Procedure B Test. The default value can be accepted by pressing the
[ENTER] key and the next question will be asked. If an error is made when
entering a new value, press the [CLEAR] key to return to the default value. Once
a new value is entered, the [ENTER] key must be pressed twice to accept that
entry. Most of the questions can be answered with a numeric answer, or press
the [-] key to enter "NOT USED", or press the [START] key to enter "AT TEST
TIME" or "AT PROGRAM INITIATE", depending on the question. When finished,
the system will return to the Operating Screen. Any changes that are made will
be automatically stored. Pressing the [MODE] and [CLEAR] keys together will
exit the Test Parameter Programming Mode without having to answer all the
questions.
13.,1
13.2 Test Parameters Set-Up - ASTM D 1238 Procedure A Testing
The following questions are asked when programming a Type A Test (manual
cutoff and weighing of the sample).
13.2.1 "Type Test" - Enter a "1" for a Type A Test.
13.2.2 "Sample ID" - This is used for identificationpurposes on the printedtest
report only. Enter either a fixed number,the [-] key to not use the Sample ID, or
press the [START]key to be promptedfor the Sample ID at test time.
13.2.3 "Run Number" - This is used for identificationpurposes on the printed
test report only. Enter either a number,the [-] key to not use the Run Number,or
press the [START] key to be prompted for the Run Number at test time. The
Run Number is automaticallyincrementedduring a group of tests and is reset
when a new group of tests is started. The best thing to enter is "1".
13.2.4 "Set Temperature" - Either enter a fIXed temperature between 0 and
4500 C or press the [START] key. If the [START] key is pressed, the Set
Temperaturewill be promptedeach time the programis selected.
-
13.2.5 "Calibration Offset"
The Calibration Offset is used to adjust the
temperature readout and controlpointto agreewith a reference thermometer or
other traceable standard. Enter the value provided with each new machine (or
after a certified technician has calibrated the machine), which will make the
MP993a Display agree with the temperature of the bore 10mm above the orifice.
If desired, press the [START] key to have this question asked "At Program
Initiate". Refer to Sections 5.1.2 & 11.4 for additional information.
13.2.6 "Load" - Enter the Load in kilograms to have Load and Shear Stress
printed on the Test Report. The [START] key may be pressed to enter the Load
.. At Test Time" or the [-] key may be pressed to enter "Not Used" and not have
the Load and Shear Stress values reported.
13.2.7 "Orifice Diameter" - The nominal orifice diameter for ASTM D 1238 is
2.095 mm (0.0825 in.). Enter the numeric value of the orifice diameter to have
Shear Stress calculated. Press the [-] key for "Not Used" or press the [START]
key to enter the orifice diameter "At Test Time".
13.2.8
"Orifice
Length"
- The
nominal orifice length for ASTM D 1238 is 8.00
mm (0.315 in.). Enter the numeric value of the orifice length to have Shear
Stress calculated. Press the [-] key for "Not Used" or press the [START] key to
enter the orifice length "At Test Time".
13.2.9 "Cut-off Time" - The manual Cut-offtime is entered in seconds. During
the test the timer beeps, resets, and begins recounting this time. A numeric
value between 1 and 9999 may be entered. Press the [START] key to enter the
Cut-Offtime "At TestTime".
13~~
13.2.10 "Release Time" (for preheat timing) - When the release time is reached
in a Type A Test, the alarm will sound. The timer will continue to run until the
[STARl1 key is pressed to begin the Cut-off Timer. A fixed value from 1 to 9999
seconds may be entered which is used with that program. The [STARl1 key
may be pressed to have the release time asked "At Test Time" or the [-] key may
be pressed to enter "Not Used" for the release time. In many instances a 7
minute preheat is desired. In this case an entry of 420 seconds would be
appropriate.
Note that the MWLD will not automatically lower during a Type A Test
13.3 Test Parameters Set-Up - ASTM D 1238 Procedure B Testing
The following questions are asked when programming a Type B Test
(Automatically Timed Test with a Programmable Piston Displacement
Transducer).
13.3.1 "Type Test"
- Enter a "2- for a Type B Test,
13.3.2 "Sample ID" - This is used for identification purposes on the printed test
report only. Enter either a fIXed number, the [-] key to not use the Sample ID, or
press the [START] key to be prompted for the Sample ID at test time.
13.3.3 "Run Number" - This is used for identification purposes on the printed
test report only. Enter either a number, the [-] key to not use the Run Number, or
press the [START] key to be prompted for the Run Number at test time. The
Run Number is automatically incremented during a group of tests and is reset
when a new group of tests is started.
13.3.4 "Set Temperature" - Either enter a fixed temperature between 0 and
450° C or press the [START] key. If the [START] key is pressed, the operator
will be prompted for the Set Temperature whenever the program is selected.
13.2.6 "Calibration Offsef' - The Calibration Offset is used to adjust the
temperaturereadout and control point to agree with a reference thermometeror
other traceable standard. Enter the value provided with each new machine (or
after a certified technician has calibrated the machine), which will make the
MP993a Display agree with the temperatureof the bore 10mm above the orifice.
If desired, press the [START] key to have this question asked -At Program
Initiate".". Refer to Sections5.1.2 & 11.4 for additionalinformation.
13.3.6 "Load" - Enter the Load in kilograms to have Load and Shear Stress
printed on the Test Report. The [START] key may be pressed to enter the Load
"At Test Time" or the [-] key may be pressed to enter "Not Used- and not have
the Load and Shear Stress values reported.
13~3
13.3.7 "Orifice Diameter" - The nominal orifice diameter for ASTM 0 1238 is
2.095 mm (0.0825 in.). Enter the numeric value of the orifice diameter if Shear
Stress, Shear Rate, and/or Viscosity are to be calculated. Enter [-] for "Not
Used"or press the [START]key to enter the orifice diameter "At Test Time".
13.3.8 "Orifice Length" - The nominal orifice length for ASTM D 1238 is 8.00
mm (0.315 in.). Enter the numeric value of the orifice length if Shear Stress,
Shear Rate, and/or Viscosity are to be calculated. Press the [-] key for "Not
Used" or press the [START] key to enter the orifice length "At Test Time".
13.3.9 "Density Type" - The melt density is necessary to calculate Flow Rate
in a Type B test. Enter a "1" to enter a fixed melt density value. Enter a 0'2"to
have the melt density calculated from a cut-off made with the first timed capture.
The melt density calculated will be carried forward or can be recalculated for the
following tests. Press the [START] key to have the Density Type question asked
"At Test Time" or press the [-] key to enter "Not Used". (See Section 16 for more
instructions on determining the Melt density.)
13.3.10 "Melt Density" - This question only appears if a -18 (fixed value) is
entered for a Density Type. If a fixed melt density is to be used, enter the
numeric value in grams per cubic centimeter. Press the [START] key to have the
Melt Density question asked ..At Test Time" or press the [-] key to enter "Not
Used", The Melt Density must be always used to calculate Flow Rate in a Type
B test.
13.3.11 "Piston Travel(s)" - Enter the amount of piston travel through which to
measureflow rate. The commondistances used are 6.35 mm (0.25 in.) or 25.4
mm (1.00 in.). Up to 5 piston travels can be used. Press the [START] key to
have this question asked "At Test Time" or press [-] to enter "Not Used". At least
1 piston travel must be used for a Type B Test or no data will be gathered.
ProgramNo.3 was preprogrammedat the factory as an example using four 6.35
mm piston travels. The average of the four is the same result obtained using a
single 25.4 mm capture. During the test, the actual piston travel measuredwill
probably be a little different from that entered due to sampling times and
resolutionof the positiondisplay.
IMPORTANT:
If you have an earlier model Actuating Switch (Types 1 or 2),
care must be taken to insure that the piston travel entered in a program matches
the piston travel that the switch is set up for see Section 12.2.6. (Also see
Appendix B of these instructions for more information on using earlier actuating
switches. )
13-r4
13.3.12 "Start Point(s)" - Theseare only requiredfor a Programmable
Piston
DisplacementTransducer(Switch Type 3). Enter the distance above the top of
the orifice that the "Capture"(piston travel) is to begin being measured. The five
starting points correspond to the five piston travels. A starting point must be
enteredfor each piston travel measurement. Press the [START] key to have the
Starting Point question asked "At Test Time" or press the [-] key to enter "Not
Used". The Starting Point for the second Piston Travel must be less than or
equal to the Starting Point for the first PistonTravel minus the first PistonTravel.
For example: If the first starting point is 46 mm and the first piston travel is 6.35
mm, the second starting point must be less than or equal to 46 - 6.35 = 39.65
mm. The starting points for all following piston travels in like fashion must be
less than the previous starting point minus the previous piston travel. Starting
points are not asked if the Switch Type is not 3 (Refer to Section 12 - Global
Setup Parameters Mode).
13.3.13 "Release Time" (for preheat timing) - When the release time is reached
in a Type B test, the alarm will sound (if activated) and the MWLD (if available)
will lower if it is being used. A fixed value from 1 to 9999 seconds may be
entered. Press the [START] key to have the Release Time question asked "At
Test Time". Press the [-] key to enter "Not Used". In many instances, a 6 minute
preheat is desired. In this case an entry of 360 seconds would be appropriate.
13.3.14 "Auto Weight Lower" - Enter a "0" to disable the MWLD feature (when
provided) or enter a "1" to enable this feature. If disabled, the operator must
manually apply the weights. If enabled, the MWLD will automatically lower the
weight(s) onto the piston rod at the end of the Release Time.
Table 13-1 -lists the availabletest results in the left column and what items must
be selected in the programto obtain that result. For example to obtain the Flow
Rate Result,the program must have the Melt Density, Piston Travel(s) and Start
Point(s)selected.
* Indicates a value must be entered to obtain this result. (or press
[-] for "Not Used" and this result will not be calculated).
l]~
~
PROGRAM
Test Type
B
Sample ID
~Used
Run Nunmer
At Test Time
Set T 8n1)erature
At Program Initiate
Calibration Offset
At Program Initiate
load
At Test TIme kg
Orifice Diameter
2.095 rTVn
OriiceLength
\0-.0
8 .000
rt<
~
.
# 1
-
PROGRAM# 2
TestType
B
SampleID
flk)tUsed
Run Number
AtTest Time
Set Ten1)erawre
At Prog~ Initiate
CalibrationOffset
At ProgramInitiate
Load
At TestTime kg
OrIficeDiameter
2.095 mrn
Offk:8Length
8.000 mm
DensityType
~---
!,'to
rTVn
DensityType
Entered
MelDensity
At TestTime
Pjsk)nTravelCap 1
At TestTime
PIsmnTravelCap2
NotUsed
PistonTravelCap3
NotUsed
pjsk)nTravelCap4
NotUsed
P~ TravelCap5
~Used
StartPoIntCap 1
46.00 nvn
Start~~2
~Used
StartPointCap 3
~Used
Start~Cap4
~Used
StartPointCap 5
NotUsed
ReleaseTkne
At TestTime
AutoWeightlower
Yes
Piston Travel Cap 1
At Test Time
Piston Travel Cap 2
tlk>tUsed
~
PistonTravelCap 3
NotUsed
~
Piston Travel Cap 4
flk>tUsed
--
PistonTravelCap 5
NotUsed
StartPointCap 1
46.00 nm
StartPointCap 2
NotUsed
Start
Point
Cap
3
NotUsecIStartPointCap 4
Jlk»tUsed
--Start
Point
Cap
5
NotUsed
ReleaseTime
AtTestTtme
Auto Weight lower
Yes
--
i~D
PROGRAM# 3
TestType
B
San1)1eID
NotUsed
RunNootJer
At Test Time
Set Temperature
At ProgramInitiate
CalibrationOffset
At ProgramInitiate
Load
AtTestTme kg
-
\'0
-
OrificeDiameter
2.095 mrn
~length
8.000 mrn
DensityType
Entered
MeltDensity
AtTestTme
PistonTravelCap 1
6.350 mrn Pisk>nTravel~ 2
6.35 mrn
PistonTravelCap 3
6.350 Am
Pisk>nTravel~ 4
6.350 mrn
Pisk>nTravel~ 5
NotUsed
StartPointCap 1
46.00 mm
StartPon Cap 2
39.65 Am
StartPointCap 3
33.30 nvn
StartPoHCap4
26.95 mrn
StartPointCap 5
NotUsed
ReleaseTime
At Test Time
Auto WeightLower
V8$
-
PROGRAM# 4
TestType
A
~ID
Not Used
Run ""'rrt)8r
AtTest TIme
Set Ternperature
At ProgramInitiate
Calimtk>nOffset
At ProgramInitiate
Load
At TestTime kg
OIik:eDlameter
2.095 rnm
OrificeLength
8.000 rnm
Cut..OffTme
At Test Tkne
ReleaseTIme
360sec
-
Table 13-2 - Factory Programmed MP993a Test Parameter Screens
These screens will appear when the Programmable Piston Displacement Transducer
(Switch/Pickup Type 3) is selected. For the other three Switch/Pickup Types (0, 1 & 2),
the "Start Point Cap 1-5" Screens would not appear.
Programs 5-25 will be the same as Program No.4 until programmed differently. The
8SET TEMPERATURE" is set at 190°C; the 8LOAD" is set at 2. 16 kg; the "RELEASE
TIME" is set at 360 seconds; the "MELT DENSITY" is set at 0.7638 grams/cm3; and the
.CUT-OFF TIME- is set at 30 seconds.
13-6
-PROGRAM'
TestType
A
.
~ID
R~n NlNrtJer
--
PROGRAM,
TestType
A
Sa~ID
PROGRAMf
TestType
A
.
~ID
PROGRAMI
TestType
A
San1)Ie10
RunNunar
Run Number
Run Nunmer
SetTernperature
Set T~ture
Set Temperature
SetTemperatur6
CaIi>raOOn Offset
Callbratk>n0ffseI
Caibratk>n Offset
CalibfaOOn
1-,*
La.:
loac.
Offsel
1::O8t
-
Orifice Diameter
-Orifice
Length
OrificeDiameter
Crib
Length
OrIIIceDlame88r
Orifice Length
~
Diameter
~~
--
Cut-Off Tune
Cut-Offlime
CUt-CXfnme
Cut-Off nme
Release
Release TImE
Releasen~
Release Time:
Time
._~
PROGRAM,
TestType
A
S811Jie10
PROGRAM,
TestType
A
San1)ieID
Run Number
Run Number
-PROGRAM
.
TestType
A
"""PROORAMI
San1JI8 ID
TestType
A
San1)ie1O
Run Nurrb«
Run NlMnber
-
SetTemperature
SetTen1)erature
Set Temperature
Set Temperature
Calibf'atk>nOffset
Calibration Offset
CalIbratk>n Offset
CalibrationOffsel
-
Load.
Lo&
lo8t
Orifice Diameter
OrifIce Diameter
Orifk:eDiameter
<AificeDiameter
6iiJ(;elength
OrIfice Length
Orifice Length
OrificeL8"9"
Cut-Off nine
Cut-Off Time
Cut-Off Time
1.DIId
Cut-Off
~Tine
-Time
Release
Tn.
R~
Tme
Release T~
Table 13-3This blank page can be copied and used to write in the specific Programs for ASTM
01238 Procedure A - Manual Cutoff Test Procedure, that are set up after receiving the
unit and kept in your records or with the machine for reference.
13-7
PROGRAM#
TestType
B
Sample10
PROGRAM!
TestType
B
SampleID
PROGRAM#
TestType
B
Sample10
PROGRAM #
Test Type
B
Sample ID
Run Number
Run Number
RunNumber
Run Number
Set Temperature
Set Temperature
Set Temperature
Set Temperature
Calibration Offset
Calibration Offset
Calibration Offset
Calibration Offset
Load
Load
Load
Load
Orifice Diameter
Orifice Diameter
Orifice Diameter
Orifice Length
OrifIce Length
OrificeLength
Orifice Length
Density Type
Density Type
DensityType
Density Type
Melt Density
Melt Density
Melt Density
Melt Density
Piston Travel Cap 1
Piston Travel Cap 1
Piston Travel Cap 1
Piston Travet Cap 1
PIston Travel Cap 2
Piston Travel Cap 2
PISton~ravel C8p 2
Piston Travel Cap 2
Piston Travel Cap 3
PistonTravelCap3
Piston Travel Cap 3
PistonTravelCap 3
-
Orifice Diameter
-
Piston Travel Cap 4
~
-
--
Piston Travel Cap 4
Piston Travel Cap 4
Piston Travel cap 4
Piston Travel Cap 5
Piston Travel Cap 5
Piston Travel Cap 5
PistonTravelCap5
StartPointCap 1
StartPointCap 1
StartPointCap 1
StartPointCap 1
StartPointCap 2
StartPointCap 2
StartPointCap 2
Start PointCap 2
StartPointCap 3
StartPointCap 3
StartPointCap 3
Start Poi~ Cap
StartPointCap 4
StartPointCap 4
Start PointCap 4
Start PointCap 4
StartPointCap 5
StartPointCap 5
Start Point Cap 5
StartPointCap 5
~
-
3
~
Release nine
ReleaseTi~
Auto Weight Lower
Auto Weight Lower
Release
ReleaseTime
Trne
-
Auto Weight Lower
Auto Weight Lower
Table 13-4
This blank page can be copied and used to write in the specific Programs for ASTM
01238 Procedure B - Automatic Timed Test Procedure, that are set up after receiving
the unit and kept in your records or with the machine for reference.
13-8
14 Section 14 - Testing Polymers According
Procedure A (Manual Cut-Off Operation)
to ASTM D1238
NOTE: The instructions in this Section are based on ASTM 0 1238. This test
method should be thoroughly studied by all operators prior to using the MP993a.
Copies of the standard are available from ASTM, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959 USA Telephone: (610) 832-9721.
Introduction
14.1.1 Each MP993a is shipped from the factory with the first four programs
already configured with example Test Parameters (see Table 13-2). Program 4 is
set up for a Procedure A test. The instructions in this Section will follow the factory
settings in Program 4. Any changes the operator makes in the program may affect
the way the controller prompts the operator.
14.1.2 To reduce the potential of breaking the reference thermometer during
testing, it is recommended the thermometer be removed (and safely stored) once
the correct operating temperature has been verified (see Section 20.6). After the
thermometer has been removed, plug the thermometer well prior to testing. A %
inch diameter x 1 inch long round head bolt has been found satisfactory for this
purpose.
14.1.2 To performtests to ASTM D 1238 Procedure A, only the basic machine
is required, along with the appropriate weight(s) for the polymer to be tested, and
the optional thermometer, if desired. If the machine is equipped with a PPDT or
one of the other automatic timing devices, simply slide the switch back until it is
out of the way. The Motorized Weight Lowering Device (MWLD) may be used if
desired, however, the weight platform will have to raised and lowered manually.
14.2.1 When the unit is powered up, the MP993a will prompt the user to enter
the date. The date is only normally used when printing out reports of the test
using the option dot-matrix serial printer. To enter the date, use the numeric
keys to enter the date in the MM-DD-YY format. To skip entering the date, press
the [ENTER] key twice.
14.2.2 If the MP993a is equipped with a PPDT, the display will prompt the
operator to "LOWER PICKUP - PRESS ENTER-. Since this is a Method A test,
the PPDT will not be used. Disregard this prompt by pressing the [ENTER] key.
14.2.3 The display will then prompt the operator to "Set Temperature".
A
default value will be displayed. This default value may be accepted by pressing
the [ENTER] key, or another set temperature may be entered via the numeric
keys. Pressthe [ENTER]key twiceto confirm the new entry.
14-1
~
Caution:Always check to make sure that the "Set Temperature"does not exceed
L_~J the range of the glass referencethermometerif one is being used.
14.2.4 The MP993a will then prompt the user to enter the "Calibration Offset"
value. Enter the calibration offset factor from the yellow Calibration Offset
Setting Worksheet that was supplied by the factory (or at the last
calibration/verification). Press the [ENTER] key two times to store the information
in the program.
14.2.5 After the temperature prompts have been answered, the Operating
Screen, similar to the one shown below, will be displayed. The MP993a
Controller will then begin to ramp the temperature up to the Set Temperature
(SP). The Program Number is shown in the lower right hand comer of the
Operating Screen. If the Program Number is not set to 4, press the [PROG] key
and use the numeric keypad to enter 4, then press the [ENTER] key twice to
confirm the selection.
Actual Temperature
Release
r-:£Kl
L~J
Time
CAUTION: The surfaces of the heater canister can be extremely hot when the
machine is in operation!
14.2.6 Once the machine has stabilized at the set temperature (+/- O.2°C),
remove the orifice (if present) and thoroughly clean the inside of the cylinder and
orifice (see Section 18 for Cleaning Instructions).
14.2.7 Reinsert the orifice into the barrel. The orifice should fall freely to the
bottom of the cylinder with an audible click. If not, remove the orifice and visually
inspect the orifice and cylinder for any defects or obstructions. Clean the bore
and orifice again if necessary. It is imperative that the bore has a mirror finish
and that no residue remains on the outside or the inside diameter of the orifice.
14.2.8 Insert the piston into the cylinder. Allow the machine to stabilize at the
set temperature
14.2.9 To start a ProcedureA type test, press [START]. The display will show
the Program Number4 is being used and the Test Type is A. Press [ENTER]to
continue.
14.2.10 The MP993a will then prompt the user to enter the "Run Number". The
default value may be accepted by pressing [ENTER], or another run number may
be entered via the numeric keys and pressing the [ENTER] key twice
).4!"a
14.2.11 The MP993a will then prompt the user to confirm the "Set Temperatureft.
The default value may be accepted by pressing [ENTER], or another set
temperature may be entered via the numeric keys and pressing the [ENTER] key
twice
14.2.12 The MP993a will then prompt the user to confirm the "Calibration
Offset". The default value may be accepted by pressing [ENTER], or another
calibration offset temperature may be entered via the numeric keys and pressing
the [ENTER] key twice.
14.2.13 The MP993a will then prompt the user to enter the -Load" that is to be
placed on the piston. Enter the value using the numeric keys, then press
[ENTER] two times.
14.2.14 The MP993a will then prompt the user to enter the "Cut Off Time(Testing Time).
Refer to Table 2 of ASTM 0 1238 to determine the
recommended testing time. Enter the testing time in seconds, then press
[ENTER] two times to confirm the selection.
14.2.15 The controller will then display the message "Test Type A - Press Start"
The machine is now ready to begin the test.
14.3 Test Procedure
14.3.1 Remove the piston and verify that the orifice is at the bottom of the bore
Place the piston on the tool rack.
14.3.2 Charge the barrel with the materialthat is to be tested. Refer to ASTM
D1238 Table 2 for suggestionson the amount of polymer to use for a test. To
charge the barrel, insert the funnel into the bore, then slowly pour the material
into the funnel. Do not dump it in all at once as it will melt and stick to the funnel.
The brass orifice removermay be used to guide the material into the bore.
r-:&l
L~J
CAUTION: The funnel, when placed in the bore, can become extremely hot
when the machine is at operating temperature! Do not allow the funnel to sit in
the bore for any length of time.
14.3.3 After charging the barrel, reinsert the piston and place the appropriate
weight on the piston. Press the [START] key. NOTE: The ASTM 01238 method
allows 1 minute to charge the bore, insert the piston, place the weight and start
the test.
14.3.4 After the test has started, the Test Screen, similar to the one shown
below, will be displayed. The Elapsed Time (ET) Display will begin to count up,
in seconds. Material will begin to extrude through the orifice.
Actual Temperature
Elapsed
Time
14.3.5 When the Elapsed Timer reaches the "Release Time" (Preheat Time)
that was entered in the Set-up Parameters, an alarm will sound for about 15
seconds. At that time, the first (lower) scribe line on the piston rod should be
close to entering the guide collar. ASTM 01238 requires a preheat time of 7 +/0.5 minutes (420 +/- 30 seconds). If the scribe line has not entered the guide
collar during the preheating period, the amount of material charged should be
reduced. Alternatively, the material in the bore can be manually purged during
the first 300 seconds of the preheating period.
TEST TIP: When testing materials with high melt flow rates (> 12 g/10
minutes), the weight platform of the MWLD can be used to prevent the polymer
from being purged from the bore prior to the end of the preheating period. To
use this feature, lower the weight platform so that the top surface of the platform
is approximately 25 mm (1 inch) above the 46 mm (1.81 inch) test start position.
The weight platform will catch the weight as it falls and support it, temporarily
reducing the load on the material in the bore. When the counter reaches the 7
minute preheat requirement, lower the weight platform all the way and allow the
test to continue. Materials with extremely high melt flows may require the orifice
to be plugged in addition to supporting the weight. Use the optional Tinius Olsen
Orifice Plug (TO Engineering Sketch # 5-2203).
14.3.6 Using the cut-offtool, cut the off the materialthat has extrudedfromthe
orifice, while at the same time press [START] key to activate the timer. The
timer will then begin counting up until it reaches the Cut-Off Time that was
previously entered. When the Cut-Off Time is reached, the alarm will beep
twice. The cut-off should be made at the time of the beep. The timer will
automaticallyreset and begin counting for the next cut-off. To reset the timer
during the middle of a test, press the [START]key. To end the test after the cutoff portion of the test has been completed, press the [CLEAR] key to stop the
cut-off timer.
14.3.7 The operator will then be prompted to enter the first Cut-offweight in
grams. Weigh the cut-off sample to the nearest milligram (0.001). Enter the
weight using the numeric keys and press the [ENTER] key once to accept the
entry, and again to get the display to show the Flow Rate in grams per 10
minutes. Press the [ENTER] key again to continue entering cut-off weights and
getting flow rates. Enter 0 for a cut-off weight when you are finished, and the
display will return to the Operating Screen.
14.3.8 After the determinationshave been made,clean the piston,bore and
orifice thoroughly as described in Section 18. IT IS IMPERATIVETHAT THE
MACHINEIS CLEANEDAFTER EACHTEST.
14.3.9 To start the next test, press the [START] key. The display will prompt
"SAME PARAMETERS, ENTER=YES CLEAR=NO". If the [CLEAR] key is
pressed,all of the "At Test Time" questionswill be asked again. If the [ENTER]
key is pressed, the next test can be run without having to answer the "At Test
Time" questionsagain.
14-4
15 Section 15 - Testing Polymers According to ASTM
Procedure B (Automatically Timed Flow Rate) when
Density is known.
D1238
the Melt
NOTE: The instructions in this Section are based on ASTM D 1238. This test
method should be thoroughly studied by all operators prior to using the MP993a.
Copies of the standard are available from ASTM, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959 (610) 832-9721.
15.1 Introduction
15.1.1 The MP993a must be equipped with the Programmable Piston
Displacement Transducer (PPDT), or one of the other switch types, in order to
perform a test according to ASTM D 1238, Procedure B. The test also requires
the appropriate weight(s) for the polymer to be tested. The Motorized Weight
Lowering Device (MWLD) may be used if desired.
15.1.2 To reduce the potential of breaking the reference thermometer during
testing, it is recommended the thermometer be removed (and safely stored) once
the correct operating temperature has been verified (see Section 20.6). After the
thermometer has been removed, plug the thermometer well prior to testing. A 11.
inch diameter x 1 inch long round head bolt has been found satisfactory for this
purpose.
15.1.3 Each MP993a is shipped from the factory with the first four programs
already configured with example Test Parameters (see Table 13-2). Programs 1,
2 & 3 are set up as examples of a Procedure B test. Instructions in this Section
will follow the factory settings in Program Number 1. Any changes the operator
makes in the program may affect the way the controller prompts the operator. The
Program Number is shown in the lower right hand comer of the Operating
Screen.
15.1.4 If a MWLD is being used, it is good practice to manually lower the weight
onto the piston prior to testing in order to check the alignment of the piston with
regards to the hole in the weight. After checking the alignment, raise the weight
platform to it upper position.
15.2
Configuringthe MP993a Controller for Procedure 8 Testing
15.2.1 When the unit is powered up, the MP993a will prompt the user to enter
the date. The date is only normally used when printing out reports of the test
using the option dot-matrix serial printer. To enter the date, use the numeric
keys to enter the date in the MM-DD-VY format. To skip entering the date, press
the [ENTER] key twice.
15-1
15.2.2 The MP993a will then prompt the operator to "LOWER PICKUP PRESS ENTER". Slide the PPDT forward, along the mounting bracket, as far as
it will go. Gently lower the PPDT arm, by hand, until it is stopped by the internal
mechanical stop in the housing (the PPDT arm MUST not hit the bracket when
lowered). Hold the arm in the lowered position, press the [ENTER] key, then
slowly release the arm.
15.2.3 After entering the date and initializing (zeroing) the PPDT, the user will
be prompted to enter the "Set Temperature", A default value will be displayed for
the Set Temperature. This default value may be accepted by pressing the
[ENTER] key, or another set temperature may be entered via the numeric keys,
then pressing the [ENTER] key twice.
r-:&l Caution: Always check to make sure that the "Set Temperature" does not exceed
L_~J the range of the glass reference thermometer if one is being used.
15.2.4 The MP993a will then prompt the user to enter the "Calibration Offset"
value. Enter the calibration offset factor from the yellow Calibration Offset
Setting Worksheet that was supplied by the factory (or when the machine was
last calibrated/verified).
Press the [ENTER] key two times to store the
information in the program.
15.2.5 After the temperature prompts have been answered, the Operating
Screen, similar to the one shown below, will be displayed. The MP993a
Controller will then begin to ramp the temperature up to the Set Temperature
(SP). If the Program Number is not set to 1, press the [PROG] key and use the
numeric keypad to enter 1, then press the [ENTER] key twice and repeat steps
15.2.3and 15.2.4to obtain the operating screenfor Program 1.
Actual Temperature
Release
~
L_~J
Set Temperature
..-program
Number
Time
CAUTION: The surfaces of the heater canister are extremely hot when the
machine is in operation!
15.2.6 Once the machine has stabilized at the set temperature (+/- O.2°C),
remove the orifice (if present) and thoroughly clean the inside of the cylinder and
orifice (see Section 18 for Cleaning Instructions).
15.2.7 Re-insert the orifice into the barrel. The orifice should fall freely to the
bottom of the cylinder with an audible click. If not, remove the orifice and visually
inspect the orifice and cylinder for any defects or obstructions. Clean the bore
and orifice again if necessary. It is imperative that the bore has a mirror finish
and that no residue remains on the orifice.
15.2.8 Insert the piston into the cylinder. Allow the machine to stabilize at the
set temperature
15-2
15.2.9 To start a ProcedureB type test, press [START]. The display will show
the Program Number 1 is being used and the Test Type is B. Press [ENTER]to
continue.
15.2.10 The MP993a will then prompt the user to enter the "Run Number". The
default value may be accepted by pressing [ENTER], or another run number may
be entered via the numeric keys and pressing the [ENTER] key twice
15.2.11 The MP993a will then prompt the user to confirm the "Set Temperature-.
The default value may be accepted by pressing the [ENTER] key. or another set
temperature may be entered via the numeric keys and pressing the [ENTER] key
twice
15.2.12 The MP993a will then prompt the user to confirm the "Calibration
Offset". The default value may be accepted by pressing [ENTER], or another
calibration offset temperature may be entered via the numeric keys and pressing
the [ENTER] key twice.
15.2.13 The MP993a will then prompt the user to enter the -Load" that is to be
placed on the piston.
[ENTER] two times.
Enter the value using the numeric keys. then press
15.2.14 The MP993a will then prompt the user to enter the "Melt Density". The
default value that is displayed may be accepted by pressing [ENTER], or another
melt density value may be entered via the numeric keys and pressing the
[ENTER] key twice.
15.2.15 The MP993a will then prompt the user to enter the "Piston Travel- Cap
(Capture) 1". ASTM 01238 requires a piston travel of 6.35 mm (0.25 inch) for
materials with expected flow rates of up to 10 grams/10 minutes; 25.4 mm (1.0
inch) for higher flow rate materials. The default value that is displayed may be
accepted by pressing [ENTER], or another value may be entered via the numeric
keys and pressing the [ENTER] key twice.
15.2.16 The MP993a will then prompt the user to enter the "Release Time". The
release time is actually the preheat time. Currently, ASTM D 1238 requires a
preheat time of 7 +/- 0.5 minutes (420 +/- 30 seconds). However, refer to the
appropriate ASTM material specification to determine the recommended preheat
time for the material that is to be tested. Enter 420 seconds, then press
[ENTER] two times to confirm the selection.
15.2.17 The controller will then display the message "Test Type B - Press Start",
The machine is now ready to begin the test.
15.3 Test Procedure
15.3.1 Remove the piston and verify that the orifice is at the bottom of the bore.
Place the piston on the tool rack.
15-3
15.3.2 Charge the barrel with the material that is to be tested. Refer to ASTM
D1238, Table 2, for suggestions on the amount of polymer to use for a test. To
charge the barrel, insert the funnel into the bore, then slowly pour the material
into the funnel. Do not dump it in all at once as it will melt and stick to the funnel.
The brass orifice remover (PIN: 02001073) may be used to guide the material
into the bore.
~
L_~J
CAUTION: The funnel, when placed in the bore, can become extremely hot
when the machine is at operating temperature! Do not allow the funnel to sit in
the bore for any length of time.
15.3.3 After charging the barrel, tamp the material down with the charging tool
(PIN 02001072) in order to remove some of the trapped air. (Depending on the
amount of material to be charged, you may have to tamp the material down more
than once to load it all in the barrel). Reinsert the piston, slide the PPDT forward
so that the end of the arm is close to the piston rod, and place the appropriate
weight on the piston (either manually or with the MWLD). Press the [START]
key. NOTE: The ASTM 01238 method allows 1 minute to charge the bore,
insert the piston, placethe weight and start the test.
TEST TIP:
When testing materials with high melt flow rates (> 12 g/10 minutes), the
weight platform of the MWLD can be used to prevent the polymer from
being purged from the bore prior to the end of the preheating period. To
use this feature, lower the weight platform so that the top surface of the
platform is approximately 25 mm (1 inch) above the 46 mm (1.81 inch)
test start position. The weight platform will catch the weight as it falls
and support it, temporarily reducing the load on the material in the bore.
When the counter reaches the 7 minute preheat requirement, lower the
weight platform all the way and allow the test to continue.
Materials with extremely high melt flows may require the orifice to be
plugged in addition to supporting the weight. Use the optional Tinius
Olsen Orifice Plug (TO Engineering Sketch 8-2203).
~
L_~J
CAUTION: If the MWLD is being used. and a Pre-Test Lower Time has been set
in the Global Parameters Set-Up Mode (see Section 12.2. 11). the weight
platform will automatically begin to lower the weight(s) when the [START] key is
pressed. Keep hands clear!
15.3.4 After the test has started, the Operating Screen, similar to the one
shown below, will be displayed. The Release Time (RT) Display will begin to
count down, in seconds. Material will begin to extrude through the orifice.
~
Actual
Temperature
Release
Time
-'i
AT 20:
190.0
RT
0-
~
SP
--
190. i0
PH-'
~
I"---
Set Temperature
Program
Number
The test can be aborted at any time by pressing either [CLEAR] or [START]
15-4
15.3.5 When the Release Time timer reaches the "Release Time" (Preheat
Time) that was entered in the Test Parameters Set-Up Mode, an alarm will
sound for about 15 seconds. At that time, the first (lower) scribe line on the
piston rod should be close to entering the guide collar.
r:&:l
L~J
CAUTION: If the MWLD is being used, it will automatically begin to lower the
weight(s) at the end of the preheating period (Release Time), provided that it has
not already been lowered all the way at the start of the test. Keep hands clear!
Note: ASTM D 1238 requires the first capture to be started at 46 mm (1.81
inches) above the top of the orifice and seven minutes (%30 seconds) after
starting the release (preheat) time. If not, the amount of material charged and/or
the release time used should changed accordingly.
15.3.6 When the piston drives the arm of the PPDT to the "Cap 1 Start Point"
that was entered in the Test Parameters Set-Up Mode, an alarm will sound and
the switch light will illuminate. The MP993a will automatically start recording the
time it takes for the piston to travel the capture distance ("Cap 1") that was
entered when configuring the controller for the test.
NOTE: There is no need to cut the extrudate during a typical Procedure B test
when the Melt Density value has been entered.
15.3.7 When the arm of the PPDT reaches the end of the capture distance, the
alarm will beep twice and the switch light will turn off.
15.3.8 At the end of the measured piston travel, the results will be available for
display (and printed if a printer is connected). If a printer is not being used, scroll
through the results by pressing the [ENTER] key, and record the results by hand.
After the last result is displayed, the standard operating screen is displayed.
Scrolling the results may be bypassed by pressing the [MODE] and [CLEAR]
keys together
15.3.9 After the determinationshave been made, clean the piston, bore and
orifice thoroughly as described in Section 18. IT IS IMPERATIVETHAT THE
MACHINEIS CLEANEDAFTER EACHTEST.
15.3.10To start the next test, charge the bore as described above, then press
the [START]key. The display will prompt "SAME PARAMETERS, ENTER=YES
CLEAR=NO". If the [CLEAR] key is pressed, all of the "At Test Time" questions
will be asked again. If the [ENTER] key is pressed, the next test can be run
without having to answer the "At Test Time" questions again.
lS~5
\
o,A
,16 Section 16 - Testing Polymers According to ASTM 01238
Procedure B (Automatically Timed Flow Rate) When the Melt
,~
Density is Unknown (Procedurefor Calculating the Melt Density of
a Polymer)
NOTE: The instructions in this Section are based on ASTM D 1238. This test
method should be thoroughly studied by all operators prior to using the MP993a.
Copies of the standard are available from ASTM, 100 Barr Harbor Drive, West
Conshohocken, PA 19428-2959 USA Telephone: (610) 832-9721.
Introduction
16.1.1 The MP993a must be equipped with the Programmable Piston
Displacement Transducer (PPDT), or one of the other switch types, in order to
determine the melt density of a polymer. The test also requires the appropriate
weight(s) for the polymer to be tested. The optional Motorized Weight Lowering
Device (MWLD) may be used if desired. A laboratory scale, with a resolution of
0.001 grams, is also required (not supplied by Tinius Olsen).
16.1.2 To reduce the potential of breaking the reference thermometer during
testing, it is recommended the thermometer be removed (and safely stored) once
the correct operating temperature has been verified (see Section 20.6). After the
thermometer has been removed, plug the thermometer well prior to testing. A ~
inch diameter x 1 inch long round head bolt has been found satisfactory for this
purpose.
16.1.3 Each MP993a is shipped from the factory with the first four programs
configured with example Test Parameters (see Table 13-2). Programs 1, 2 & 3
are set up as examples of a Procedure B test. Instructions in this Section will
follow the factory settings in Program Number 2. Any changes the operator makes
in the program may affect the way the controller prompts the operator. The
Program Number is shown in the lower right hand comer of the Operating
Screen.
16.1.4 If a MWLD is being used, it is good practice to manually lower the weight
onto the piston prior to testing in order to check the alignment of the piston with
regards to the hole in the weight. After checking the alignment, raise the weight
platform to it upper position.
Configuringthe MP993a Controller for Procedure B Testing
16.2.1 Whenever the MP993a is powered up, it will prompt the user to enter the
date. The date is only normally used when printing out reports of the test. To
enter the date, use the numeric keys to enter the date in the MM-DD-YY format.
To skip entering the date, press the [ENTER] key twice.
16-1
16.2.2 The MP993a will then prompt the operator to "LOWER PICKUP PRESS ENTER". Slide the PPDT forward, along the mounting bracket, as far as
it will go. Gently lower the PPDT arm, by hand, until it is stopped by the internal
mechanical stop in the housing (the PPDT arm MUST not hit the bracket when
lowered). Hold the arm in the lowered position, press the [ENTER] key, then
slowly release the arm.
16.2.3 After entering the date and initializing (zeroing) the PPDT, the user will
be prompted to enter the "Set Temperature". A default value will be displayed for
the Set Temperature. This default value may be accepted by pressing [ENTER],
or another set temperature may be entered via the numeric keys and pressing
the [ENTER] key twice.
~
Caution:Always check to make sure that the "Set Temperature"does not exceed
l_-==Jthe range of the glass reference thermometer if one is being used.
16.2.4 The MP993a will then prompt the user to enter the "Calibration Offset"
value. Enter the calibration offset factor from the yellow Calibration Offset
Setting Worksheet that was supplied by the factory (or when the machine was
last calibrated/verified).
Press the [ENTER] key two times to store the
information in the program.
16.2.5 After the temperature prompts have been answered, the Operating
Screen, similar to the one shown below, will be displayed. The MP993a
Controller will then begin to ramp the temperature up to the Set Temperature
(SP). If the Program Number is not set to 2, press the [PROG] key and use the
numeric keypad to enter 2, then press the [ENTER] key twice and repeat steps
16.2.3and 16.2.4to obtain the operatingscreen for Program2.
Actual Temperature
Release
Time
r-:&l CAUTION:
L_~J machine
The surfaces of the heater canister are extremely hot when the
is in operation!
16.2.6 Once the machine has stabilized at the set temperature (+/- O.2°C),
remove the orifice (if present) and thoroughly clean the inside of the cylinder and
orifice (see Section 14 for Cleaning Instructions).
16.2.7 Re-insert the orifice into the barrel. The orifice should fall freely to the
bottom of the cylinder with an audible click. If not, remove the orifice and visually
inspect the orifice and cylinder for any defects or obstructions. Clean the bore
and orifice again if necessary. It is imperative that the bore of the cylinder has a
mirror finish, and that no residue remains on the orifice.
16.2.8 Insert the piston into the cylinder. Allow the machine to stabilize at the
set temperature
16...2
16.2.9 To start a Procedure B type test, press [START]. The display will show
the Program Number 2 is being used and the Test Type is B. Press [ENTER] to
continue.
16.2.10 The MP993a will then prompt the user to enter the "Run Number". The
default value may be accepted by pressing [ENTER], or another run number may
be entered via the numeric keys and pressing the [ENTER] key twice
16.2.11 The MP993a will then prompt the user to confirm the "Set Temperature".
The default value may be accepted by pressing [ENTER], or another set
temperature may be entered via the numeric keys and pressing the [ENTER] key
twice
16.2.12 The MP993a will then prompt the user to confirm the "Calibration
Offset". The default value may be accepted by pressing [ENTER], or another
calibration offset temperature may be entered via the numeric keys and pressing
the [ENTER] key twice.
16.2.13 The MP993a will then prompt the user to enter the "Load" that is to be
placed on the piston. Enter the value using the numeric keys, then press the
[ENTER] key two times.
16.2.14 The MP993a will then prompt the user to enter the "Piston Travel- Cap
(Capture) 1". ASTM 01238 requires a piston travel of 6.35 mm (0.25 inch) for
materials with expected flow rates of up to 10 grams/10 minutes; 25.4 mm (1.0
inch) for higher flow rate materials. The default value that is displayed may be
accepted by pressing [ENTER], or another value may be entered via the numeric
keys and pressing the [ENTER] key twice.
16.2.15 The MP993a will then prompt the user to enter the "Release Time". The
release time is actually the preheat time. Currently, ASTM D 1238 requires a
preheat time of 7 +/- 0.5 minutes (420 +/- 30 seconds). However, refer to the
appropriate ASTM material specification to determine the recommended preheat
time for the material that is to be tested. Enter 420 seconds, then press
[ENTER] two times to confirm the selection.
16.2.16 The controller will then display the message "Test Type B - Press Start".
The machine is now ready to begin the test.
16-3
16.3 Test Procedure
16.3.1 Remove the piston and verify that the orifice is at the bottom of the bore.
Place the piston on the tool rack.
16.3.2 Charge the barrel with the material that is to be tested. Refer to ASTM
01238, Table 2, for suggestions on the amount of polymer to use for a test. To
charge the barrel, insert the funnel (PIN 02001091) into the bore, then slowly
pour the material into the funnel. 00 not dump it in all at once as it will melt and
stick to the funnel. The brass orifice remover (PIN 02001073) may be used to
guide the material into the bore.
~
CAUTION: The funnel, when placed in the bore, can become extremely hot
L_~_Jwhen the machine is at operating temperature! Do not allow the funnel to sit in
the bore for any length of time.
16.3.3 After charging the barrel, tamp the material down with the charging tool
(PIN 02001072) in order to remove some of the trapped air. (Depending on the
amount of material to be charged, you may have to tamp the material down more
than once to load it all in the barrel.) Reinsert the piston, slide the PPDT forward
so that the end of the arm is close to the piston rod, and place the appropriate
weight on the piston (either manually or with the MWLD). Press the [START]
key. NOTE: The ASTM D1238 method allows 1 minute to charge the bore,
insert the piston, place the weight and start the test.
TEST TIP:
When testing materials with high melt flow rates (> 12 g/10 minutes), the
weight platform of the MWLD can be used to prevent the polymer from
being purged from the bore prior to the end of the preheating period. To
use this feature, lower the weight platform so that the top surface of the
platform is approximately 25 mm (1 inch) above the 46 mm (1.81 inch)
test start position. The weight platform will catch the weight as it falls
and support it, temporarily reducing the load on the material in the bore.
When the counter reaches the 7 minute preheat requirement, lower the
weight platform all the way and allow the test to continue.
Materials with extremely high melt flows may require the orifice to be
plugged in addition to supporting the weight. Use the optional Tinius
Olsen Orifice Plug (TO Engineering Sketch S-2203).
~
L~J
CAUTION: If the MWLD is being used, and a Pre-Test Lower Time has been set
in the Global Parameters Set-Up Mode (see Section 12.2.11), it will automatically
begin to lower the weight(s) when the [START] key is pressed. Keep hands
clear!
16'~.
16.3.4 After the test has started, the Operating Screen, similar to the one
shown below, will be displayed. The Release Time (RT) Display will begin to
count down, in seconds.Materialwill begin to extrudethrough the orifice.
Actual Temperature
ReleaseTime...
~I AT
~RT
190.0
20.0
SP
190.0
PN 2
Set Temperature
Program Number
The test can be aborted at any time by pressing either [CLEAR] or
[START].
16.3.5 When the Release Time timer reaches the "Release Time" (Preheat
Time) that was entered in the Test Parameters Set-Up Mode, an alarm will
sound for about 15 seconds. At that time, the first (lower) scribe line on the
piston rod should be close to entering the guide collar.
~
L_~J
CAUTION: If the MWLD is being used, it will automatically begin to lower the
weight(s) at the end of the preheating period (Release Time), provided that it has
not already been lowered all the way at the start of the test. Keep hands clear!
Note:
ASTM D 1238 requires the first capture to be started at 46 mm (1.81
inches) above the top of the orifice and 7 minutes (:t30 seconds) after starting
the release (preheat) time. If not, the amount of material charged and/or the
release time used should changed accordingly.
16.3.6
When the weight drives the arm of the PPDT to the "Cap 1 Start Point"
that was entered in the Test Parameters Set-Up Mode, the alarm (if activated)
will emit a single beep and the switch light will illuminate. Using the Cut-Off Tool
(PIN 02001090), cut off the material that has extruded through the orifice during
the preheating period and discard it.
16.3.7
The MP993a will automatically start recording the time it takes for the
piston to travel the Capture distance that was entered when configuring the
controller for the test. At the end of the measured piston travel, the alarm will beep
twice and the switch light will turn off. At this signal, use the Cut-Off Tool to cut
off the material that was extruded during the measured piston travel.
TEST TIP:
For the best accuracy, it is important that the cut-offs are made directly
at the bottom of the orifice and precisely at the sound of the single and
double "beeps".
16.3.8 The MP993a will prompt the operator to enter the "Cut-Off Weight". Using
a laboratory scale that has resolution of at least 0.001 grams, weight the material
that was extruded during the measured piston travel. Enter the weight into the
MP993a controller using the numeric keys. Press the [ENTER] key twice to
confirm the entry.
~6,S
16.3.9 At the end of the test, the results will be available for display (and
printed if a printer is connected). If a printer is not being used, scroll through the
results by pressing the [ENTER] key. Manually record the results on a piece of
paper. Use caution to accurately record the results because the results are
cleared once they are read! After the last result is displayed, the standard
operating screen is displayed. Scrolling the results may be bypassed by pressing
the [MODE] and [CLEAR] keys together
16.3.10 After the determinationshave been made, clean the piston, bore and
orifice thoroughly as described in Section 18. IT IS IMPERATIVETHAT THE
MACHINEIS CLEANEDAFTER EACHTEST.
16.3.11 To start the next test. press the [START] key. The display will prompt
"SAME PARAMETERS. ENTER=YES CLEAR=NO". If the [CLEAR] key is
pressed. all of the "At Test Time" questionswill be asked again. If the [ENTER]
key is pressed. the next test can be run without having to answer the "At Test
Time" questionsagain.
16.3.12 The test should be repeated several times to obtain an average melt
density value.
16.3. 13 Once the melt density is established for a particular polymer formulation,
this value should be recorded. Subsequent test may then be made without the
need to cut off and weigh the sample (refer to Section 15). Keep in mind that
any additive and/or variation in the formulation of the polymer may affect the melt
density value. It may be desirable to calculate the melt density for each sample.
i6~6
Introduction
17.1.1 The optional Flow Rate Ratio (FRR) Attachment is designed for use with
a Model MP993a Extrusion Plastometer that is equipped with a Programmable
Piston Displacement Transducer (PPDT) and a Motorized Weight Lowering
Device (MWLD) as illustrated in Figure 123A-16 of Bulletin 123A-MI. Before use,
check to see that the PPDT has been properly installed and calibrated (see
Section 20 for instructions for installation and calibration of the PPDT).
17.1.2The FRR Attachment allows flow rate determinations to be made using
two or three different test loads on one charge of material. Refer to Figure 17-1
for help with identifying components. Flow Rate Ratio determinations can be
made with or without Melt Flow for Windows software. However, the use of the
software makes setting up and collecting data much easier.
17.1.3 The three test loads most commonly used for this test are 21.6, 10.0,
and 2.16 kilograms. The weights will be set to change at the heights given in the
example which follows and that weights being used are 2,060, 7,840, and 11,600
grams. At the end of the preheat period, the MWLO lowers the total weight
stack (21.6 kg) and, once the start point has been reached, the MP993a records
the flow rate for that particular load. When the upper weight reaches the first set
of Load Change Collars, it is removed from the load. The test continues with the
lower two weights (10 kg) applying the load. After the second flow rate is
determined, the middle weight will be removed from the load by the second set
of Load Change Collars. The third and last flow rate is made with only the lower
weight applying the load to the material. Flow rate values are calculated using
ASTM 01238, Procedure B methodology.
17.1.4 A two load test operates in a similar manner except that the upper, or
upper and middle weights are supported after the first flow rate determination
while the remaining weight continues downward for a second measurement.
Flow Rate Ratio Attachment Components
17.2.1 (3) Load Change (Lift) Pins - used to remove (lift) the intermediate 5 inch
diameter weight. Each pin has two different length adjusting screws with lock
nuts. The length-adjusting screws used are dependent on the height at which
the load change is to occur.
17.2.2 (4) ExtendedWeight-RetainingRods - used for containing the weights.
They also hold the four split Load Change Collars used to removingthe upper 6"
diameterweight.
"1., -1'1
1.
2.
LOAD CHANGE COLLARS USED TO REMOVE 6- DIA WEIGHTS
LOAD CHANGE PINS USED TO REMOVE S- DIA WEIGHTS
Figure 17-1 - Optional Flow Rate Ratio Package Setup for Three-Load Testing
17-2
17.2.3 HeightAdjuster - used during set-up to supportthe weight(s) at the
desired load change heightsso that the height of the Load Change Pins and
Load Change Collarscan be set.
17.2.4 ExtrudatePush-OutPlate- is placedbetweenthe top of the pistonrod
and the undersideof the MWLDweight platformto speed the removalof the
remainingmaterialin the barrel at the end of a test.
17.2.5 Weights - includes(1) 2,060 gramweight(PIN: 02001023);(1) 7,840
gram weight (PIN: 02001250);and (1) 11,600gram weight (PIN: 02001251)
17.3 Installation of Components for a Three-Load FFR Test
Note: To reduce the risk of bums, assemble the FRR components when the
machineis at ambienttemperature.
17.3.1 Prior to installation, it must be decided at what piston heights the
changes of the test loads will occur. Normally,flow rate data is captured when
the piston foot is between46 mm (1.81 in.) and 20.6 mm (0.81 in.) above the top
of the orifice. Also, it is recommendedthat at least 2.5 mm (0.1 in.) of piston
travel, or two minutes of time, be allowed betweenthe load change and the start
of the next capture of flow rate data. This will usually allow sufficienttime for the
polymer to adjust to the new pressure, so that the subsequent flow rate
measurementwill be obtained under an equilibratedsystem.
17.3.2 A typical three-load FRR test starts by measuring the flow rate over a 10
mm (0.40 in.) of piston travel, starting when the piston is 46 mm (1.81 in.) above
the top of the orifice. The load is then changed when the piston foot is at 33.5
mm (1.31 in.) above the top of the orifice. The material is allowed a stress
equilibration period, and then the flow rate is measured over a 5 mm (0.20 in.) of
piston travel, starting when the piston foot is 32 mm (1.26 in.) above the top of
the orifice. The third load change occurs when the piston foot is 25.65 mm (1.01
in.) above the top of the orifice, and the flow rate is measured over 2.5 mm (0.10
in.) of piston travel, starting when the piston is 23.1 mm (0.91 in.) above the
orifice.
-'~StOn Foot Heig~ AbOVeOrifice
IAction
Is~~ FirstTO-mrn-(O.~in.)captUre /46 mm (1.81 in.)
~36
mm (1.41 in.)
34.54
I Cha
t=:ndFirst Capture
Start
-End
.Chanqe
re
econ
-
aPture
32 mm
27 mm- 1.
WeiQht
qE:nd Third Capture
In.
123.1mm (0.91 in.)
120.6 mrn (0.81 in.)
Table 17-1- Typical Three-Load Flow Rate Ratio Test Set-Up
J7~J
.~
.. "
,
125.65 mm (1.01 in.)
~StartTh~2.5 mm(0.1inJ-c;apture
c
~
-
17.3.3 Lower the weight platform of the Motorized Weight Lowering Device
(MWLD) as far as it will go by pressing the [DOWN] key.
17.3.4 Thread the three Load Change Pins into the three inner tapped holes
located on the MWLD weight platform. Each of these pins has a %"-20 socket
head cap screw and a lock nut threaded into the top of it. The cap screw is used
to adjust the weight change point.
There are two different screw lengths
provided. Usually the shorter screws are used.
17.3.5 Install the four Weight Retaining Rods and Load Change Collars in
place of the standard Weight Safety Uprights.
17.3.6 Loosen the locking set screws on the Load Change Collars and lower
them so that they are resting on the weight platform.
17.3.7 Remove the piston foot and guide collar from the piston rod. Place the
Height Adjuster on the piston rod so that the long hex portion of the adjuster is
towards the top of the rod. Reinstall the piston foot. Do not put the guide
collar back on the piston rod at this time.
17.3.8 Place the piston rod in the cylinder. The tip of the Height Adjuster
should fit into the cylinder.
17.3.9 Place the 2,060 and 7,840 gram Weightsover the Piston Rod.
17.3.10 Enter the Global Setup Parameters Mode in the MP993a Controller by
pressing the [MODE] key followed by 8, 3, & 4 keys in succession. Page through
the screens by pressing the [ENTER] key until the "Position/Arm Length" screen,
similar to the one shown below, appears. Note: This screen will not appear
unless Switch Type 3 has been selected on an earlier screen in the Setup Mode.
ENGLISH
Actual ArmHeight-..
CalibratedLength -..
--
METRIC UNITS
UNITS
Position
Arm Length
1.8100in
6.0000
Position
Arm Length
46.000 mm
152.400
IMPORTANT:
Do not attempt to raise or lower the MWLD while in the Setup
Mode. If you do so by mistake, press the [CLEAR] key to return the calibrated
"Arm Length" to its original entry. It will not necessarily be set to the value shown
here. The arm length is established during calibration and should only be changed
during calibration (see Section 20).
I':;:.
17.3.11 Adjust the position of the PPDT arm using the black, knurled knob on
top of the PPDT housing. The arm should be positioned so that the actual arm
height is approximately 47.3 mm (1.86 in), when it is desired to use the standard
ASTM D1238 starting height of 46 mm (1.81 in). If the test measurement is to be
started at other positions, make sure that the arm is positioned at least 1 mm
(0.04 in) above the starting position for "Cap 1".
17.3.12 While holding the arm of the PPDT down, slide the PPDT forward so
that its arm is under the 2,060 gram weight. Adjust the height of the weights and
piston rod by rotating the long hex portion of the Height Setting Adjuster until the
"Position" display reads the desired lowest change weight position. Make sure
that the PPDT arm remains in contact with the weight. In this example, the
lowest weight change occurs at 25.65 mm (1.01 in.).
17.3.13 Adjust the three ~"-20 screws in the top of the three Load Change
Pins so that the tops of the screws are against the bottom of the 7 ,840 gram
weight. Use the longer screws, if necessary, to achieve the height required.
Tighten the nuts to lock the setting of these screws.
17.3.14 Using the Height Setting Adjuster as before, adjust the height so that the
"Position" display reads the position at which the upper weight change is to
occur. In this example the upper weight change is to occur at 34.54 mm (1.36
in.).
17.3.15 Place the 11,600 gram weight on top of the 7,840 gram weight. Slide
the Load Change Collars up and lock them in place so that they are touching the
bottom of the 11,600 gram weight.
17.3.16 Exit the Setup Mode by pressing the [MODE] key and the [CLEAR] key
simultaneously.
17.3.17 Raise the weight platform of the MWLD by pressing the [UP] key.
Removethe Height Adjust Assembly from the piston. Replace the piston guide
on the piston.
17.3.18 Press the [MODE] key followed by the 8, 5, and 2 keys, in succession,
to enter the Test Parameter Programming Mode. The three Piston Traver
Captures would be 10, 5, and 2.5 mm (0.4, 0.2, and 0.1 in.), and the three
Starting Points would be 46, 32, and 23.1 mm (1.81, 1.26, and 1.01 in.). Refer to
Table 17-1 for an example of a typical three-load polyethylene testing program.
After entering these values exit the Test Parameter Programming Mode by
pressing the [MODE] and [CLEAR] keys simultaneously.
NOTE: If the MP993a is interfaced to a PC using Tinius Olsen's Melt Flow for
WindowsTMsoftware, the piston travel capture distances, starting points and
loads must be programmed into the Capture Parameters section of the software.
Therefore, Section 17.3.18 can be ignored.
17.,5
17.4
Typical Three-Load FRR Test
17.4.1 After charging the test sample, insert the piston rod. Slide the PPDT
forward so that the arm will contactthe bottom of the lowest weight as the piston
rod movesdownwardduringthe test.
17.4.2 Lower the weight platform of the MWLD so that the top surface of the
weight platform is approximately 25 mm (1 inch) above the tip of the arm of the
PPDT. (See Section 17.3.10 and 17.3. 11 for an explanation of the initial arm
placement. )
17.4.3 Start the test following the standard operating procedures described in
section 15 of these instructions or refer to the Melt Flow for WindowsTM Instruction
Manual if a PC is being used.
17.4.4 When the "Release Time" (Preheat) reaches zero, the weight platform of
the MWLD will lower fully, applying the full 21.6 kg test load. When the bottom of
the piston foot is 46 mm (1.81 inches) above the top of the orifice, the MP993a will
emit a single "beep" and the first test measurement will begin. At the end of the
first measurement, the MP993a will emit a "double beep". The upper weight will
come to rest on the load change collar after the "double beep", reducing the load
to 10 kg.
17.4.5 When the bottom of the piston foot is 32 mm (1.26 inches) above the top
of the orifice, the MP993a will again emit a single "beep" and the second test
measurement will begin. At the end of the second measurement, the MP993a will
emit a "double beep". The middle weight will then come to rest on the load change
collar, reducing the load to 2.16 kg.
17.4.6 When the bottom of the piston foot is 23.1 mm (0.91 inches) above the
top of the orifice, the MP993a will again emit a single "beep", indicating that the
third test measurement is beginning. Completion of this measurement will be
indicated by a double "beep".
TEST TIP:
Prior to actual testing, run several practice tests. Confirm that each
individual test measurement is completed prior to the point where the uppermost
weight (either the 11,600 gram or the 7,840 gram weight, depending on which
capture) reaches the Load Change Collars or the Load Change Pins. This can
be confirmed by observing if the double "beep", signifying the end of a test
measurement, occurs before the weights are supported on the collars. AJso,
observe that the start of the second and third measurements, as indicated by the
single "beep", occurs after the upper weight has been removed from the piston,
and that sufficient time has been allowed for stress equilibrium in the molten
polymer. Insufficient piston travel or time will result in low flow rate values. It
may be necessary to increase the distance between the weight change and the
start of the next capture.
..17-6
17.4.7 At this point, a three-load test is completed. If the MP993a is not
connectedto a printeror interfacedwith Melt Flow for Windows1M software, obtain
the data by scrolling through the displays, by pressing the [ENTER] key, and
recordingthe results by hand. If the MP993ais interfacedwith a printer,the raw
test data will be automaticallyprintedat the end of the test. Eitherway, the FRR
can be calculatedby usingone of the followingequations:
FRR= Flow Rate @ 21.6 kg OR Flow Rate @ 21.6 kg OR Flow Rate @ 10.0 kg
Flow Rate @ 10.0 kg
Flow Rate @ 2.16 kg
Flow Rate @ 2.16 kg
NOTE: If the MP993a is interfaced to the software, the test results are
automatically calculated, and are available for printing or storage within the PC.
See the Melt Flow for WindowsTMinstruction manual for more information.
17.5
Test
Procedure for a Typical Two-Load FFR Test
17.5.1 Tests using only two of the three available loads can also be performed
once the components have been installed in accordance with Section 17.3.
17.5.2 For testing using loads of 21.6 and 2.16 kg, carefully scribe a thin
reference line on each of the four Weight Retaining Rods directly above the Load
Change Collar. Then, loosen the Load Change Collars, lower them at least 12.5
mm (0.5 in) and retighten them at this lower position. Also, setup the MP993a
Test Parameters, as shown in Table 17-1, for a 21.6/2.16 kg Two-Load Test (or
setup the appropriate Piston Travels and Start Points in the Capture Parameters
of the Melt Flow for WindowsTM software if it is being used).
NOTE: If the Load Change Pins were removed as covered in Section 17.5.3,
they must be replaced.
17.5.3 For testing using loads of 21.6 and 10 kg, it is only necessaryto remove
the three Load Change Pins and configure the MP993a Test Parameters, as
shown in Table 17-1, for a 21.6/10.0 kg Two-loadTest (or setup the appropriate
Piston Travels and Start Points in the Capture Parametersof the Melt Flow for
Windows
1M softwareif it is beingused)
NOTE: The Load Change Collars must be positioned as described in Section
17.3.15. If they have been moved as described in Section 17.5.2, they can be
repositionedusing the scribe lines on the weight retainingrods.
17.5.4 For testing using loads of 10.0 and 2.16, it is only necessary to remove
the 11,600 gram weight and setup the MP993a Test Parameters, as shown in
Table 17-1, for a 10.0/2.16 kg Two-load Test( or setup the appropriate Piston
Travels and Start Points in the Capture Parameters of the Melt Flow for
WindowsTMsoftware if it is being used).
17.5.5 Proceed with testing following Sections 17.4.1 through 17.4.8 (except
that only two measurements will be made).
17-7
Three-Load Test
-~--
PROGRAM
TestType
B
Sa~1e ID
Not Used*
Run Nurrt)er
Not Used*
Set Temperature
190.O"C
Calibratk>n
Offset
Per calibrationsheet
Load
Not Used
OrificeDiameter
Not Used
OrificeLength
Not Used
DensityType
Entered
Melt Density
0.7638
PistonTravelCap 1
10 mm (0.4m)
PistonTravelCap 2
5 mm (0.2in)
PistonTravelCap 3
2.5 mm (0.1 in)
PistonTravelCap4
Not Used
PistonTravelCap 5
Not Used
StartPointCap 1
46.0 mm (1.81in)
StartPointCap 2
32.0 mm (1.26in)
Start PointCap 3
23.1 mm (0.91in)
StartPointCap 4
Not Used
StartPointCap 5
Not Used
ReleaseTime
360sec
Auto WeightLower
Yes
Two-Load Test
(21.6/2.16 or 10/2.16 kg,
PROGRAM
Test Type
B
SampleID
NotUsed*
Run Number
Not Used.
Set Temperature
190.0oC
Calibration Offset
Per
calibration
-
sheet
--
Load
Not Used
OrificeDiameter
Not Used
Orifice
LengU1
Not Used
-
Density Type
Entered
Melt Density
0.7638
PIston Travel Cap 1
10 mm (0.4
in)
-
PistonTravelCap2
2.5 mrn(0.1In)
Piston Travel Cap 3
Not Used
Piston Travel Cap 4
Not Used
Piston Travel Cap 5
NotUsed
StartPointCap 1
46.0~(~)
StartPointCap 2
23.1 mm (O.91in)
StartPointCap 3
Not Used-StartPointCap 4
Not Used
StartPointCap 5
Not Used
ReleaseTime
360sec
Auto Weight Lower
- Yes
-
Two Load Test
f?1 .6/10 k,a)
PROGRAM #
TestType
B
Sample 10
Not Used*
Run Number
Not Used*
Set Temperature
190.00C
Calibration Offset
Per calibraoon sheet
Load
Not Used
Orifice Diameter
Not Used
Orifice Length
Not Used
Density Type
E~
Melt Density
0.7638
Piston Travel Cap 1
10 nvn (0,4 in)
Piston Travel Cap 2
5 rnrn (0.2 in)
Piston Travel Cap 3
NotUsed
Piston Travel Cap 4
Not Used
Piston Travel Cap 5
NotUsed
Start Point Cap 1
46.0 mm (1.81 in)
Start Point Cap 2
32.0 rnm(1.26in)
Start Point Cap 3
NotUsed
Start Point Cap 4
Not Used
Start Point Cap 5
Not Used
Release
Time
360 sec
Auto Weight Lower
Yes
* If the melt indexer is connected to a dot-matrix printer, Sample 10 and Run Number may be selected AT
TEST TIME. This will permit numerical entries (made prior to testing) to be displayed on the print out.
Table 17-1 - Typical MP993a Test Parameters for use with Flow Rate Ratio
Attachment.
17.'
18 Section 18
Cleaning Instructions
18.1 It is absolutely imperative that the bore, orifice and piston are cleaned thoroughly
after EACH test.
18.2 After the test has been completed, allow the weight to remain on the piston until
all the excess material has extruded from the orifice.
18.3 Remove the weight and the piston. (If a MWLD is being used, raise the weight
platform all the way up. If a Swing-Away-Weight-Platform is installed, lift the knob at
the rear of the weight platform and swing the weight platform to the side.) Wipe the
piston thoroughly using a cloth made from a natural fiber. The cloth must be clean and
free from oil or grease of any type as they may affect future test results. Place the
piston on the tool rack or on an insulated surface that will prevent it from rolling.
18.4 Usingthe Orifice RemovalTool (PIN: 02001073),removethe orifice by pushingit
up from the bottom of the bore. Clean the outside of the orifice with the clean, natural
fiber cloth. Clean the bore of the orifice with the orifice drill (PIN: 02001075). If
necessary,the orifice bore can be brushed, using a brass brush available from W. E.
ALGER PRODUCTSCO., Part Number 10455; Telephone (216) 741-9082; Fax (216)
741-9131.There should be no residueon the orifice after cleaning.
18.5 Clean the bore by placing a cotton patch over the bore, then pushing the patch
through the bore using the Cylinder Cleaning Tool (PIN: 02001074) in a manner similar
to cleaning a gun barrel. Change the patch and repeat at least 3 times or until there is
no visual evidence of material remaining on the bore wall. If necessary, the bore can
be brushed, using a brass brush available from W. E. ALGER PRODUCTS CO., Part
Number 11012; Telephone (216) 741-9082; Fax (216) 741-9131. Cotton patches and
cleaning cloths are available from SKYLINE CENTER Telephone:(800) 747-4065; Fax
(319) 243-9901
18.5 Drop the orifice in the bore. It should fall to the bottom easily and there should
be an audible click when it hits the insulator plate. If not, remove the orifice and reclean it and the bore.
18-1
19 Section 19 - Preventative Maintenance
Cleanliness
19.1.1 The most important factor in maintaining the accuracy of a melt index
machine is cleanliness. It is absolutely necessary that the bore, orifice and
piston be cleaned after each test. However, be aware that, despite the best
efforts, some material will build up on the components, causing them to appear
tarnished or discolored. Tinius Olsen does not recommend any other cleaning
practices besides those detailed in ASTM D 1238. Refer to Section 18.
19.1.2 At some point, it may become necessary to remove the insulator plate at
the base of the furnace assembly. This will be necessary to remove any build up
of material at the base of the bore that has not been removed by the normal
cleaning process.
19.1.3 Some components of a melt indexer, including the bore, piston foot and
orifice, are considered to be consumable, meaning that normal wear will cause
them to go out of tolerance over time. Check the orifice frequently using the
Go/No-Go gauge. Inspect the piston foot for nicks or scratches, or for signs of
wear on the edges. Check the bore visually for nicks and or scratches. Any
obviously damaged components shall be discarded and replaced.
PPDTArm Length Adjustment
19.2.1 The arm on the PPDT is designed so that it protrudes 114.3 mm (4.5 in.)
from the front of the switch when the tip of the arm is centered on the PPDT.
This makes the arm 152.4 mm (6.00 in.) long from its center of rotation. If the
arm has been bent, it should be manually straightened and adjusted to make the
effective length of the arm 152.4 mm (6.00 in.) long.
19.2.2 Disconnect the melt indexer from the electrical source.
19.2.3 To adjust the arm length, removethe front cover of the PPDT housing,
loosen the lock nut and set screw, bend as necessary to straighten, rotate the
arm to obtain the proper length and tighten the lock-nut and set screw.. Replace
the cover on the housing
19.2.4 Slide the PPDT forward in the slot until it is close to the piston rod but
does not touch it throughout its arc of travel.
19.2.5 Reconnect the melt index to the electrical source. Turn on the MP993a
Controller, if it does not prompt the user to lower the arm after entering the date,
enter the Test Parameters Setup Mode and set the Switch Type to 3. Exit the
Setup Mode and turn the MP993a Controller off and then back on again. It is
imperative that the PPDT be initialized (zeroed) each time the MP993a Controller
is turned on to give the PPDT its referenced starting point.
19-1
19.2.6Using a straight edge as a guide, adjust the switch mounting bracket so
that the bottom of the PPDT is even with the weight support shoulder of the
piston rod. Then, while pressing the arm down, adjust the downward motion limit
set screw (see Figure 8-1), so that the point of the arm stops 25.4 +/- 0.5 mm
(1.00 +/- 0.02 in.) beneath the weight support on the piston rod. Adjust the
downward motion set screw by loosening the lock nut and turning the set screw.
NOTE: It is necessary to perform a calibration/verification if the PPDT arm is
straightened or its arm length is adjusted. Refer to Section 20 for guidance.
19.2.7 The PPDT has a resolution of about 0.01 mm (0.0004 in.). Because of
its high resolution, it is possible to move the arm fast enough that it will loose its
relative position. Care must be taken in use not to bend the follower arm or
move it too rapidly. It is an accurate measuring device and must be treated as
such.
19.3 Motorized Weight LoweringDevice (MWLD)19.3.1 For lubrication of the Motorized Weight Lowering Device refer to
Assembly Drawing No. 5-6-476 in Appendix A of these instructions. This should
be done approximately once a year or every 1,000 hours of use.
19.3.2 To lubricate the Pinion & Gear Rack on the front of the lifting column,
raise the MWLD up to its top position. Partially disassemble the front of the
lower part of the rubber boot by removingthe front two screws on the sides, and
then the single screw in the front that holds the heat shield for the rubber boot.
To gain access to the front screw you may have to remove the two upper
furnace-mountingbolts and tilt the furnace. After removing the three screws, lift
up the front part of the rubber boot thereby exposingthe rack gear.
IMPORTANT: Q.Q~
REMOVE !!is
OTHER TWO (2) ~
!!is LOCK-NUT~ .§:.§ISCREW!!:,!!!is .B~
QE !!is ~~
SCREWS Q.B.
These two (2)
side screws hold a roller bearing assembly in place and the lock-nut & set screw
is for adjusting the front and back clearance by pressing on the bearing.
19.3.3 Apply a bead of "LUBRIPLATE #630-AA" grease, or equivalent, to the
rack gear and then run the MWLD up and down a few times to evenly distribute
the grease.
19.3.4 Reassemble the lower part of the rubber boot and the furnace. When
reassembling the furnace be sure to check the level and make sure that all the
furnace bolts are tight.
19.3.5 With the MWLD all the way down at its lowest position, lubricate the
OIUTE Sleeve Bearing (5-6-476-9) by putting about 5 drops per month of S.A.E.
20 Wt. Oil (Three-ln-One) into the oil hole in the front of the lifting column near
the bottom.
1.'~~
19.3.6 The drive of the MWLD has two Friction Clutches for both the UP and
DOWN directions. These are to prevent damage when reaching the end of the
stroke and also to hold the support platform in place with large test loads. Both
clutches are factory adjusted to lift and support 50 pounds (22.7 kg). If the
weight does not stay up in place; tighten the knurled nut on the DOWN (right
hand) clutch. If the MWLD cannot lift the weight up; tighten knurled nut on the
UP (left hand) clutch. If the knurled nuts on the friction clutches are hard to turn
or binding, apply some "NEVERSEEZ" to the threads under the knurled nuts on
the two friction clutches. The metal cover over the friction clutches must be
removed and the knurled nuts loosened to accomplish this.
19.4
Miscellaneous
19.4.1 Heater Condition
19.4.1.1 With power disconnected,removethe four screws and carefully
pull the MP993acontrollerout of the consoleto expose the main terminal
strip on the rear of the MP993
19.4.1.2 . Check the resistance of the heater bands using an ohmmeter.
The resistance between Terminals TOP and L1 (Wires T and C) should
be 71 to 79 ohms. The resistance between Terminals BOT and L1 (Wires
B and C) should be 76 to 84 ohms. The resistance between Terminals
TOP and BOT (Wires T and B) should be 147 to 163 ohms. The
resistance between any of the wires to the case of the heater should be
above 10 Megohms.
19-3
20 Section 20
Cali brationN erification
NOTE: ASTM 01238 recommends that the melt indexer should be thoroughly inspected
and verified for compliance to the specification at least annually. Follow the guidelines
as detailed in the current version of ASTM 0128, or contact Tinius Olsen Field Service
to arrange to have the machine verified by Tinius Olsen personnel. Tinius Olsen's Field
Service Department is accredited by A2LA for the calibration/verification of melt flow
indexers. The Service Department maintains NIST traceable calibration equipment and
can issue the calibration/verification certificates that are required by many quality
programs. Contact the Tinius Olsen Field Service Department for more information.
20.1 CalibrationNerificationProcedure for PPDT
20.1.1 Introduction
20.1.1.1 Accurate calibration and verification of the measuring
capabilities of the PPDT can be accomplished using the optional PPDT
Calibrator (Part Number 02001262). The calibrator consists of a 0-2"
barrel type micrometer head and a mounting bracket. The micrometer
has a resolution of 0.001 inch.
20.1.1.2 The instructions in this section only cover the calibration of the
PPDT when used with the MP993a Controller. Please contact the
factory for information on calibrating other types of actuating switches
and controllers.
20.1.2 Mounting the Calibrator to the Extrusion Plastometer
20.1.2.1 Enter a Set Temperature of 20°C and allow the furnace to
cool down to room temperature. Do not use the Calibrator when the
furnace is hot. A hot furnace can cause the Calibrator to expand and
introduce errors.
20.1.2.2 Remove the piston from the bore. If the Extrusion Plastometer
is equipped with an optional Motorized Weight Lowering Device, the
weight support platform must be lowered all the way down. Press the
[DOWN] key until the platform stops moving.
20.1.2.3 Before mountingthe Calibrator,make certain that all the parts
of the Calibratorare firmly tightened.
20.1.2.4 Clamp the Calibrator onto the right-hand furnace support of
the melt indexer as described below (refer to Figure 20-1).
20.1.2.5 There are 2 thumbscrews that hold the Clamp Bar against the
Mounting Post. Remove the lower one completely.
20-1
~
SY«TCHAM,
I
\
I
r ~
TORAS8B8.Y
(O2OOt2G)
'\\
(02001~)
SwrTCH
~,
--.
~
~
~
/
[
[
r~POSTI
aAWMR
~
I
DANGER
HOT
ftiI
r
e
I
'---'.-
.~
I
"-,t:
FIGURE 20-1
CALIBRATION OF THE PROGRAMMABLE PISTON DISPLACEMENT TRANSDUCER
20-2
20.1.2.6
Loosen the upper thumbscrew so the Clamp Bar of the
calibration device slides down over the furnace support between the
front of the Tool Rack and the heads of the two socket head cap screws
that hold the furnace
20.1.2.7 Replace the lower thumbscrew and tighten both thumbscrews
to secure the fixture, but do not tighten them completely. Slide the
calibration device up and to the front against the two white insulating
tubes. Then firmly tighten the Clamp Bar evenly using the two
thumbscrews. The calibrator must be kept vertical with respect to the
PPDT.
NOTE:
IT IS MOST IMPORTANT THAT THE CALIBRATOR IS
CLAMPED FIRMLY SO THAT THERE IS NO CHANCE OF IT
SHIFTING
DURING
VERIFICATION
AND
CALIBRATION
PROCEDURES.
20.1.2.8 Slide the PPDT forward in the slot so that the tip of the switch
arm is directly below and centered with the anvil on the end of the
micrometer screw. If the tip cannot be centered, loosen the two socket
head cap screws on the upper end of the mounting post of the
calibrator, then rotate the upper bracket, which holds the micrometer,
into position. Tighten the cap screws when finished.
20. 1.3 Verification/Calibration Procedure
20.1.3.1 Enter the Global Setup Parameters Mode by pressing the
[MODE] key, followed by 8, 3, & 4 in succession. Page through the
screens by pressing the [ENTER] key until one of the screens below
appears. (This screen will not appear unless Switch Type 3 has been
selected earlier in the Test Parameters Setup Mode and that the actual
values displayed on the screen will usually be different from the ones
shown here.)
METRIC UNITS
ENGLISH UNITS
ActualArm Height~ Position 46.000 mm Position 1.8100 in
CalibratedLength~ Arm Length 152.400 Arm Length 6.0000
IMPORTANT:
Do not attemptto raise or lower the MWLD while on
the "Arm Length" Screen. If you do so by mistake, press [CLEAR] key to
return the calibrated "Arm Length" to its original entry.
20.1.3.2
Gently lower the switch affil to its lowest position. The
"Position" display should read approximately -25.4 mm (-1.000 in.). If not,
exit the Global Setup Parameters Mode, turn the power OFF, then back
ON. Refer to Section 15.2 about initializing the PPDT. Check the position
display again with the switch arm fully lowered.
20-3
NOTE:
Always operate the calibrator downward when taking
readings.
20.1.3.3 With the tip of the switch arm centered under the micrometer
tip, turn the calibrator up until the Position Display reads at least 47.000
mm (1.8500 in.) and then turn it slowly down to the nearest value to
46.000 mm (1.8100 in.). Because of the 0.01 mm (0.0004 in.) resolution
of the system, the display may not show the exact value.
20.1.3.4 Record the reading shown on the Position Display as the
Starting Height, and record the reading from the micrometer. Turn the
micrometer down exactly 25.4 mm (1.000 in.). Record the Position
Display reading as the Ending Height. Subtract the Ending Height from
the Starting Height to get the measured PPDT Distance. Subtract the
measured PPDT Distance from the Calibrator Motion of 25.4 mm (1.000
in.) to get the amount of:t Error. If the absolute value of the .t; Error is less
than 0.025 mm (0.001 in.) or 0.1%, the current "Arm Length" does not
have to be changed.
20.1.3.5 If the absolute value of the Error is greater than 0.025 mm
(0.001 in.), multiply the ,t; Error by a factor of six to get the :t Correction.
Add the Current Arm Length to the :t Correction to get the New Arm
Length. Enter this as the New Arm Length. The "Position" displayed on
the MP993a is updated after the [ENTER] key is pressed once.
NOTE:
If the New Arm Length is greater than 153.4 mm (6.04 inches)
or less than 151.4 mm (5.96 inches), the actual length of the arm should
be adjusted mechanically. Example of calculating a new arm length:
20.1.3.6 You MUST ALWAYS establish a new zero reading
whenever changirng1heArm Length. It is best to exit the Global
Parameters Setup Mode and then turn the power OFF and ON again
and reinitialize (zero) the PPDT after making any arm length
adjustments.
20-4
adjustments.
20.1.3.7 To check the calibration over the operating range of the
PPDT turn the calibratoruntil the PositionDisplayreads the nearest
value to 46.000 mm (1.8100 in.). Record the reading shown on the
Position Display as the Starting Height. Then turning the calibrator
down in exactly 6.35 mm (0.2500 in.) increments,record the next four
(4) position readings.
I
NOTE: Always operate the calibrator downwards when taking readings.
20.1.3.8 If the four readings taken in the previous paragraph are not
linear I check to make sure that the PPDT has been set up as previously
described and that the PPDT has been initialized (zeroed) properly
during power up (refer to Section 15.2). Improper initialization will result
in non-linearity.
20.2 Temperature Verification/Calibration
20.2.1 SuggestedEquipment
20.2.1.1 Digital Temperature Indicating Unit, Model 4202-13
INSTRULAB, Inc.
1205 Lamar Street, P.O. Box 98
Dayton, Ohio 45404-0098
Telephone: (937) 233-2241/ Fax: (937) 223-1705
20.2.1.2 RTD Probe, INSTRULAB, Model 840-161-03.
20.2.1.3 MiscellaneousPartsfrom TIN IUS OLSEN PIN: 02001451
(See Figure 20-2)
Includes:
RTD Sensor Guide Part Number 5-6-461C
RTD Sensor Bushing, Part Number 5-6-461 D
10 mm Spacer, Part Number 5-6-461B
65mm Spacer, Part Number 5-6-461 E
Stop Collar, Part Number 90001065
20-5
-
21 Section 21 Service Parameters Mode
21.1 The Service ParametersMode contains the PID control settings for the two (2)
heaterzones and displaysthe actual Bottom and Top Zone temperaturesas sensed by
the Dual Zone Probe.
21.2 Enter the Service ParametersMode by pressingthe [MODE] key followed by the
numbers 8. 3. and 5. DO NOT CHANGE ANY OF THESE SETTINGS WITHOUTA
GOOD UNDERSTANDINGOF THE EFFECT THE CHANGE WILL HAVE ON THE
TEMPERATURECONTROLCAPABILITYOF THE MP993a. See Table 21-1 for the
standardfactory settingsfor either 115 or 230 volts.
21.3
The following Parameters are displayed in the Service Parameters Mode;
21.3.1 "Prop Band Bottom" - This is the proportionalband, in degrees, within
which the output to the heater is proportionalto the difference between the set
point minusthe actual temperaturedivided by the proportionalband.
21.3.2 "Reset Bottom" - This parameter is multiplied by the sum of the errors in
temperature. In this way small errors can be corrected. If this value is too high
the temperature will slowly oscillate about the set point. If it is too low it will take
a long time to reach its set point.
21.3.3 "Rate Bottom" - This parameter helps prevent overshoot. A higher rate
will cause a lesser output for a given rate of temperature rise. If the Rate is too
low, large overshoots will occur. If the Rate is too high, the temperature increase
will be very sluggish
21.3.4 "Rate Band Bottom" - This is a multiple of the proportional band over
which the Rate is effective.
21.3.5 "Cycle Time Bottom" - The cycle time is the time between temperature
sense/adjustcycles.
21.3.6 "Prop Band Top" - This is the proportionalband in degrees within which
the output to the heater is proportionalto the difference between the set point
minusthe actual temperaturedivided by the proportionalband.
21.3.7 "Reset Top" - This parameter is multiplied by the sum of the errors in
temperature. In this way small errors can be corrected. If this value is too high
the temperaturewill slowly oscillateabout the set point. If it is too low it will take
a long time to reach its set point.
21.3.8 "Rate Top" - This parameter helps prevent overshoot. A higher rate will
cause a lesser output for a given rate of temperature rise. If the Rate is too low,
large overshoots will occur. If the Rate is too high, the temperature increase will
be very sluggish.
21",a.
21.3.9 "Rate Band Top" - This is a multiple of the proportional band over which
the Rate is effective.
21.3.10 "Cycle Time Top" - The cycle time is the time between the temperature
sense/adjustcycles.
21.3.11 Process Bottom" - only displays the temperature at the bottom of the
dual zone probe, which is the temperature that is displayed as the Actual
Temperature on the operating screen. (No entry required)
21.3.12 "Process Top" - only displays the temperature at the top of the dual
zone probe. (No entry)
21.4 The PID Control Parameters will change depending on whether 115 or 230 volts
power the system. Note that when the controller is near the set point temperature using
230 volts, the heaters are on for such a short period of time that the heater lights on the
front panel will not blink on and off. Below is Table 21-1 showing the standard PID
Control Parameters for both voltage settings.
TABLE
-- -21-1 Standard PID Control Parameters
21-2
-
22 Section 22 Communications
22.1 Overview-Serial Port Connection
22.1.1 The MP993a has a 25 pin D-subminiature female connector located on
the side panel of the melt indexer. All connections to external serial devices
(printers or computers) are made through this port. A ribbon cable inside the
console connects this port with the 25 pin serial port on the MP993a controller
itself.
22.1.2 The serial communications for the MP993a are set at 1200 baud, Odd
parity, 7 data bits, 1 stop bit. Handshaking signals are not used by the MP993a.
~
22.1.3 The MP993a can use either RS-232/423 or RS-422 communications.
This selection is made by an 8 pin jumper located on the MP993a's printed
circuit board near its 25 pin serial connector. The positions for the jumper (423
or 422) are clearly labeled on the board.
CAUTION: ALWAYS UNPLUG THE 115V1230V POWER
REMOVING THE CONTROLLER FROM ITS CONSOLE.
CORD
BEFORE
22.1.4 The user selects whether the MP993a will be interfaced with a serial
printer or a computer through the Global Setup Parameters. Additionally, if a
computer is to be used with the RS-422 communications, a unique device 10
number (0-9) must be assigned to the melt indexer.
22.1.5 A list of the cables and communications standards for each MP993a
application is given in these instructions.
22.2
Serial Printer Interface
22.2.1 Connect the serial printer to the MP993a using the Tinius Olsen MIPrinter 25 M/M AME Cable (PIN 90002871).
22.2.2 Configure the printer with the appropriatecommunicationsparameters.
The MP993a uses 1200 baud, Odd parity, 7 data bits, 1 stop bit. An exampleof
the serial configurationfor an OKIDATAMICROLINE320 (with serial port option)
is as follows:
Parity
Serial Data 7 or 8 Bits
Protocol
Diagnostic Test
Busy Line
Baud Rate
DSR Signal
DTR Signal
Busy Time
22.7~
Odd
7
Ready/Busy
No
SSD1200 BPS
Valid
Ready on Power UP
200 ms
22.2.3 Configurethe MP993afor RS-232/423communications. This is done by
putting the 8 pin jumper on the MP993a's printed circuit board-near the 25 pin
serial connector-in the 423 position of the socket. This position is clearly
labeled on the board. Be careful not to bend any of the pins. All pins of the
jumper must align properlywith the holes of the socket.
~
CAUTION: ALWAYS UNPLUG THE 115V/230V
L...:=J REMOVING THE CONTROLLER FROM ITS CONSOLE.
POWERCORD BEFORE
22.2.4 Enter the global setup parameters of the MP993a by pressing [MODE]
then "8", "3", "4". Scroll through the selections until you come to the
"PRINTER/COMPUTER" selection. Press number 1 to select the printer.
Continue scrolling through the remaining selections, or press [MODE] and
[CLEAR] simultaneously to exit this mode.
22.2.5 At the onset of testing, the MP993a will transmit the heading information
to the printer. At the completion of the test, the MP993a will transmit the results
to the printer.
22:3 RS-232/423 Computer Interface
22.3.1 Use the Tinius Olsen Mi-interface AME Cable (PIN 90002820) to
connect the 9 pin serial port of the computer to the melt indexer. Optionally I a 25
pin M/F straight through cable (PIN 90002646) and a 25 pin M/F AME (PIN
90002647) can be used for computers that have a 25 pin male style RS-232
port.
22.3.2 Configurethe MP993afor RS-232/423communications. This is done by
putting the 8 pin jumper on the MP993a's printed circuit board-near the 25 pin
serial connector-in the 423 position of the socket. This position is clearly
labeled on the board. Be careful not to bend any of the pins. All pins of the
jumper must align properlywith the holes of the socket.
~
L~J
CAUTION: ALWAYS UNPLUG THE 115V/230V POWER
REMOVING THE CONTROLLER FROM ITS CONSOLE.
CORD
BEFORE
22.3.3 Enter the global setup parameters of the MP993a by pressing the
[MODE] key, then the "8", "3", and "4" keys in succession.. Scroll through the
selections until you come to the "PRINTER/COMPUTER" selection. Press
number 2 to select the computer. Continue scrolling through the remaining
selections, or press the [MODE] and [CLEAR] keys simultaneously to exit this
mode.
22.3.4 Follow the instructions for the Flow rate for Windows software to
configure the computer.
~2!;;2
22.3.5 If you are not using the Tinius Olsen software, a list of commands has
been included in these instructions for developing your own software. However,
due to the complexity of the communications, Tinius Olsen strongly recommends
using Tinius Olsen software if data storage and/or machine control through a PC
is desired.
22.3.6 The computer will be able to control the MP993a and gather data using
the appropriate communications commands listed in these instructions. If Tinius
Olsen software is being used, refer to the software instruction manual to run the
program.
22.4 RS-422 Computer Interface
22.4.1 Configure the COM-422 board according to the hardware instructions
included. The switches and jumpers sh.ould be set for RS-422 communications
with no handshaking signals. The base address and interrupt levels are normally
set for COM2. If the computer already has a COM2 port, it must be disabled to
prevent a conflict from occurring.
22.4.2 Carefully install the COM-422 board in the computer. If Tinius Olsen
provided the computer, the board should already be configured and installed
properly. An IBM PC with the micro-channel bus requires a special RS-422
board and configuration software.
22.4.3 Use the Tinius Olsen Main Interface Cable (PIN 02001261) to connect
the 9 pin serial port of the COM-422 board inside the computer to the melt
indexer(s).
22.4.4 If more than two melt indexers are being connected, the Main Interface
Cable (PIN 02001261) connects to the first machine. Successive machines are
daisy chained together using Auxiliary Interface Cables (PIN 02001246). Refer
to Wiring Diagrams 8-12-1204 and 8-12-1205 in APPENDIX A of these
instructions.
22.4.5 Configure the MP993a for RS-422 communications. This is done by
putting the 8 pin jumper on the MP993a's printed circuit board-near the 25 pin
serial connector-in the 422 position of the socket. This position is clearly
labeled on the board. Be careful not to bend any of the pins. All pins of the
jumper must align properly with the holes of the socket.
~
CAUTION: ALWAYS UNPLUG THE 115V/230V
L_~J REMOVING THE CONTROLLER FROM ITS CONSOLE.
POWER
CORD
BEFORE
22.4.6 Enter the global setup parameters of each MP993a by pressing the
[MODE] key, then the "8", "3", and "4" keys in succession. Scroll through the
selections until you come to the "PRINTER/COMPUTER" selection. Press
number 2 to select the computer.
22-3
22.4.7 Continue scrolling through the remaining selections until you come to
DEVICE ADDRESS. Enter a number between 0 and 9 for the address of each
machine. Up to ten melt indexers can be connected to a single computer and
each machine must have its own unique address. The first machine should be
set for address 0, the next machine address 1, and so on.
22.4.8 Follow the instructions for the Melt Flow for Windows software to
configure the computer.
22.4.9 If you are not using the Tinius Olsen software, a list of commands has
been included in these instructions for developing your own software. However,
due to the complexity of the communications, Tinius Olsen strongly recommends
using Tinius Olsen software if datastorage and/or machine control through a PC
is desired.
22.4.10 The computer can now control the MP993a's and gather data using the
appropriate communications commands listed in these instructions. If Tinius
Olsen software is being used, refer to the software instruction manual to run the
program.
CommunicationParameters:
IIRS-232/423
JI
RS-422
Odd Par'
7 DataBits
IOdd Parity
7 Data Bits
& 1 StoD Bit
& 1 Stop Bit
1200 BPS Baud Rate; 1200 BPS Baud Rate I
XON/XOFF
FULL PROTOCOL
PROTOCOL
-
~~---
MP993a Communication Commands
Many of the commands listed below, if improperly used, can have adverse affects.
Commands preceded by a "?" are READ commands and commands preceded by "="
are WRITE commands. The commands are transmitted as ASCII characters. <sp> is a
space and <cr> is a Carriage Return. The communications commands for the MP993a
Controller are as follows.
22.6. 1 ? <sp> ACT <Cr>
This parameter represents the actual process temperature of the Bottom
Zone 1. There is no decimal point. It is a read-only parameter.
22.6.2? <sp> ACT2 <Cr>
This parameter represents the actual process temperature of the Top
Zone 2. There is no decimal point. It is a read-only parameter.
22-4
22.6.3? <sp> ATP <sp> parm <Cr>
This parameter represents the active test parameters that are used during
a test. It has the same ranges as the front panel prompts. Setting a value
is accomplished by the format: = <sp> A TP <sp> parm <sp> data <Cr>
parm:
0 = Test Type
2 = Run Number
4 = Calibration Offset
6 = Orifice Diameter
8 = Cutoff Time
10 = Density
12 = Piston Travel No.2
14 = Piston Travel No.4
16 = Start Point No.1
18 = Start Point No.3
20 = Start Point No.5
22 = Auto Weight Lower
24 = Piston Travel No.7
26 = Piston Travel No.9
28 = Start Point No.7
30 = Start Point No.9
1 = Sample 10
3 = Set Temperature
5 = Load
7 = Orifice Length
9 = Density Type
11 = Piston Travel No.1
13 = Piston Travel No.3
15 = Piston Travel No.5
17 = Start Point No.2
19 = Start Point No.4
21 = Release Time
23 = Piston Travel No.6
25 = Piston Travel No.8
27 = Start Point No.6
29 = Start Point No.8
22.6.4 ? <sp> CAL Y <Cr>
This parameter determines if all, some, or none of the calibration
parameters can be accessed. It has the same range as the front panel
prompt. Setting a value is accomplished by the format: = <sp> CALY
<sp> data <cr>
data:
0 = None
2 = Restore
1 =AII
22.6.5 ? <sp> CAP <Cr>
This parameter represents the total number of valid captures. A write will
set "Test Type" to 3. This is accomplished by the format: = <sp> CAP
<sp> 2 <cr>
22.6.6 ? <sp> CP1 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 1. There are no decimal points. It is a
read-only parameter.
22-5
22.6.7? <sp> CP2 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 2. There are no decimal points. It is a
read-only parameter.
22.6.8 ? <sp> CP3 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 3. There are no decimal points. It is a
read-only parameter.
22.6.9? <sp> CP4 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 4. There are no decimal points. It is a
read-only parameter.
22.6.10 ? <sp> CP5 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 5. There are no decimal points. It is a
read-only parameter.
22.6.11 ? <sp> CP6 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 6. There are no decimal points. It is a
read-only parameter.
22.6. 12 ? <sp> CP7 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 7. There are no decimal points. It is a
read-only parameter.
22.6. 13 ? <sp> cpa <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 8. There are no decimal points. It is a
read-only parameter.
22.6.14 ? <sp> CP9 <Cr>
This parameter returns the actual time and the actual bottom process
temperature (Zone 1) for Capture 9. There are no decimal points. It is a
read-only parameter.
22-6
22.6.15 ? <sp> CUR <Cr>
This parameter represents the current program number. It has the same
range as the front panel prompt. Setting a value is accomplished by the
format: = <sp> CUR <sp> data <cr>
22.6.16 ? <sp> ER1 <Cr>
This parameter represents the fatal error codes within the unit. Clearing
the errors is done by sending: = <sp> ER1 <sp> 0 <cr>
22.6.17 ? <sp> ER2 <Cr>
This parameter represents the communications error code within the
unit. It will clear itself when read. This is a read-only parameter. The
error format is as follows:
0 = No Error
1 =Transmit Buffer Overflow
2 = Receive Buffer Overflow
3 = Framing Error
4 = Overrun Error
5 = Parity Error
6 = Talk out of turn Error
7 = Invalid Reply
8 = Noise Error
20 = Command not Found
21 = Parameter Not found
22 = Incomplete Line
23 = Invalid Character
24 = Invalid number of characters
25 = Input out of Limit
26 = Read only error
27 = Write only error
28 = Invalid in run mode
22.6.18
= <sp>
FER3 <sp> 1 <Cr>
This parameter will alter a specific location in the External RAM memory
without updating the checksum. The next time a power-up is performed,
an External RAM error will be generated. This will cause all parameters
to be set to their default values. This is a write-only parameter.
22.6.19 = <sp> FER5 <sp> 1 <Cr>
This parameter will alter a specific location in the EEPROM memory
without updating the checksum. The next time a power-up is performed,
an EEPROM error will be generated. This will cause all parameters to
be set to their default values. This is a write-only parameter.
~~~
22.6.20
? <sp> GSP <sp> parm <cr>
This parameter represents the global SETUP mode parameters that are
used during a test. It has the same ranges as the front panel prompts.
Setting a value is accomplished by the format: =<sp> GSP <sp> parm
<sp> data <cr>
parm:
0 = Inches/Millimeters
2 = Printer/Computer
4 = High Temp Alarm
6 = Delay Time
8 = Zone Select
= Pretest Lower Time
1 = Alarm Active
3 = Offset Difference
5 = Switch/Pickup Type
7 = Position/Arm Length
9 = Intensity Adjust
22.6.21 = <sp> INDC <sp> 1 <cr>
This parameter is used to bypass the access code to enter the
CALIBRATION mode. This is a write-only parameter.
22.6.22 ? <sp> INP<sp> parm <Cr>
This parameter is used to read the expansion inputs. This is a read-only
parameter. The format is:
parm:
0 = Expansion 0
pansion 1
22.6.23 ? <sp> KEY <Cr>
This parameter is used to read the current value of the front panel keys.
This is a read-only parameter.
22.6.24 ? <sp> LGOT <Cr>
This parameter represents the manual output that is currently active.
This is a trouble-shooting tool that is only available in the CALIBRATION
mode. It has the same range as the front panel prompt. Setting the
value is accomplished by the format: = <sp> LGOT <sp> data <cr>
22.6.25
? <sp> LI <Cr>
This parameter is used to read the logical inputs. It has the same format
as the front panel prompt. This is a read-only parameter.
22-~
22.6.26
? <sp> MAV <Cr>
This parameter has no effect. It is available to be compatible with older
units. The write can be accomplished by the format: = <sp> MA V <sp>
1 <cr>
22.6.27 = <sp> MDKY <sp> 1 <Cr>
This parameter simulates pressing the enter action key. It is a write-only
parameter.
22.6.28 ? <sp> MOL <Cr>
This parameter represents the model identification and software version
of this unit. This is a read-only parameter.
The control's response,
where data' is the software version, will be: 993 Version <sp> data <cr>
22.6.29 ? <sp> MEM <sp> address <cr>
This parameter represents the hexadecimal value of a SINGLE byte
memory location in the control. This is a read-only parameter. The
hexadecimal range of the address is 0000 - FFFF, with the exception of
1000 - 103F.
22.6.30 ? <sp> MEMO <sp> address <Cr>
This parameter represents the hexadecimal value of a DOUBLE byte
memory location in the control. This is a read-only parameter. The
hexadecimal range of the address is 0000 - FFFF. with the exception of
1000 -103F.
22.6.31 ? <so> MOD <Cr>
This parameter will set the Test Type to 2 and return a value of 2
is a read-only parameter.
This
22.6.32 ? <so> MODE <cr>
This parameter represents the status of the control
parameter. The format is:
0 = POWERUP Mode
2 = MONITOR Mode
4 = PROGRAM Mode
6 = SERVICE Mode
8 = SELECT Mode
10 = WORK Mode
22-9
This is a read-only
1 = OPERATION Mode
3 = REVI EW Mode
5 = SETUP Mode
7 = CALIBRATION Mode
9 = START Mode
22.6.33 ? <sp> OPT <sp> parm <Cr>
This parameter is used to operate the expansion outputs. Setting the
value is accomplished by the format: = <sp> OPT <sp> parm <sp> data
<cr>
parm:
1 = Raise Weight 1
3 = Auto Cutoff 3
5 = Expansion 5
0 = Lower Weight 0
2 = Orifice 2
4 = Expansion 4
22.6.34 ? <sp> PGM <sp> pann <Cr>
This parameter represents the PROGRAM mode parameters that are
used during a test. There are twenty-five (25) sets of these parameters
determined by the current program number. It has the same ranges as
the front panel prompts. Setting a value is accomplished by the format:
= <sp> PGM <sp> parm <sp> data <cr>
parm:
0 = Test Type
2 = Run Number
4 = Calibration Offset
6 = Orifice Diameter
8 = Cutoff Time
10 = Density
12 = Piston Travel No.2
14 = Piston Travel No.4
16 = Start Point No.1
18 = Start Point No.3
20 = Start Point No.5
22 = Auto Weight Lower
1 = Sample ID
3 = Set Temperature
5 = Load
7 = Orifice Length
9 = Density Type
11 = Piston Travel No.1
13 = Piston Travel No.3
15 = Piston Travel No.5
17 = Start Point No.2
19 = Start Point No.4
21 = Release Time
22.6.35 ? <sp> PT1 <Cr>
This parameter is used to read the actual piston travel for Capture 1.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.36 ? <SD> PT2 <cr>
This parameter is used to read the actual piston travel for Capture 2.
The units are in either millimeters or inches. This is a read-only
parameter.
Z2-10
22.6.37 ? <sp> PT3 <Cr>
This parameter is used to read the actual piston travel for Capture 3.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.38 ? <sp> PT4 <cr>
This parameter is used to read the actual piston travel for Capture 4.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.39 ? <sp> PT5 <Cr>
This parameter is used to read the actual piston travel for Capture 5.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.40 ? <sp> PT6 <Cr>
This parameter is used to read the actual piston travel for Capture 6.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.4' ? <sp> PT7 <Cr>
This parameter is used to read the actual piston travel for Capture 7.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.42 ? <sc> PT8 <cr>
This parameter is used to read the actual piston travel for Capture 8.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.43 ? <sp> PT9 <cr>
This parameter is used to read the actual piston travel for Capture 9.
The units are in either millimeters or inches. This is a read-only
parameter.
22.6.44 ? <sp> RAW <Cr>
This parameter represents the hexadecimal AID raw counts of a desired
channel. This is a read-only parameter. The control's response will be:
Zone 1 <sp> Zone 2 <sp> Ground <cr>
,.a2-U
22.6.45 ? <sp> RES <Cr>
A write with this parameter will stop the timer and go to the OPERATION
mode (default display). It will also set "Test Type" to 2, clear the total
number of captures, and clear the actual capture times and
temperatures. A read will return a value of o. It is available to be
compatible with older units. The write can be accomplished by the
format: = <sp> RES <sp> 1 <cr>
22.6.46 = <sp> RST <sp> 1 <Cr>
This parameter allows the original calibration data to be restored. It is
only available at the "Calibrate Restore" prompt in the CALIBRATION
mode. It is a write-only parameter.
22.6.47 ? <SD> RUN <cr>
This parameter will return a 0 if the unit is in the STOP mode, and will
return a -1 if the unit is in the START mode.
This is a read-only
parameter.
22.6.48 ? <sp> SER <sp> parrn <Cr>
This parameter represents the global SERVICE mode parameters that
are used during a test. It has the same ranges as the front panel
prompts. Setting a value is accomplished by the format: = <sp> SER
<sp> parm <sp> data <cr>
parm:
0
2
4
6
8
=
=
=
=
=
Proportional Band(Bottom)
Rate(Bottom)
Cycle Time(Bottom)
Reset(Top)
Rate Band(T op)
1=
3=
5=
7=
Reset(Bottom)
Rate Band(Bottom)
Proportional Band(T op)
Rate(Top)
9 = Cycle Time(Top)
22.6.49 ? <sc> SP1 <cr>
This parameter represents the current setpoint that both zones are
controlling to. It has the same range as the front panel prompt. There is
no decimal point. Setting a value is accomplished by the format: = <sp>
SP1 <sp> data <cr>
22.6.50 ? <so> SST <cr>
This parameter is used to generate a start/stop toggle. It simulates
pressing the [START] key twice (capture mode). A read will return a
value of O. Setting the value is accomplished by the format:= <sp> SST
<sp> 1 <cr>
22-12
22.6.51 ? <sp> TIM <Cr>
This parameter represents either the time remaining or elapsed time
during a test. Setting the value is accomplished by the format:= <sp>
TIM <sp> data <Cr>
22.6.52 ? <sp> TL T <cr>
This parameter represents the total time for Capture 1, Capture 2, and
Capture 3. This is a read-only parameter.
22-13
23 Section 23 - Troubleshooting
23.1
System Warnings - If the data that is required to run a test has not been entered,
a warning will be flashed on the display. The following is a list of the meaning of
the warnings that may be displayed.
gWARNING
WARNING Meaning
~
Corrective Action
I Code
1
D?
1.:1
4
No Cut-Off
Entered.
Time A Cut-Off time must be entered to run a Type A
test. Enter a Cut-Offtime in the test Parameters.
ISeeTypeA Test,test parameters.
Type lA Pickup Type must be entered in the Setup Mode
, t:ntered.
i~_9rderto run a Type B test.
No
Piston
Travel Piston Travel 1 must be entered in order to run a
Entered.
Type B test. Enter a correct value for Piston Travel
1 in the test Parameters. See Type B Test, test
oarameters.
No Piston Travel or no Piston Travel 1 and a Starting Point (if a
Starting Point Entered. Programmable Piston Displacement Transducer is
No
Pickup
used) must be entered in order to run a Type B
test. Enter a correct value for Piston Travel 1 and a
Starting Point 1 (if a Programmable
Piston
Displacement Transducer is used) in the test
Parameters. See Type B Test, test parameters.
:>
0
Wrong PickupType
For
a Type
may
be used.
82
Test,
only
Switch/Pickup
Type
2'
Three Piston Travels IFor a Type 82 Test, three piston travels must be
are needed.
entered. For a #18 flag these piston travels are
0.25, 0.5, and 0.25 inches.
~)~jl
1
23.2 System Errors - These errors appear on the display if the system detects a
problem with any of the hardware.
t:rror
Code
Error Meaning
I Corrective Action
1
EPROM Error.
Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for repair.
Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for repair.
Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for reDair.
Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for reDair.
Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for repair.
---
RAM Error
.?
-
14
-
External RAM Error
13
I
I
ConfigurationError:
-
0
EEPROM
6
AID Bottom UnderflowTurn the power off and then on again. If the problem
Error.
persists, note the error number and return the unit to
Error
llius Olsenfor repair.
7
AID Bottom Overflow Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Error.
:
8-
!Tinius Olsen for repair.
Underflow Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for reoair.
Top Overflow Turn the power off and then on again. If the problem
lAID
Error
persists, note the error number and return the unit to
T1!!!usOlsen for repair.
Stack Overflow Error Turn the power off and then on again. If the problem
persists, note the error number and return the unit to
Tinius Olsen for repair.
Open RTD Sensor Probably either the temperature probe is damaged or
BOTTOMError
the connection is loose. You can temporally switch
the wires for the TOP RTD with those for the
BOTTOM RTD. Turn the power off and on, if the
error is now 13 the problem is definitely the probe. If
:Error 11 still shows up, note the error and return the
unit to Tinius Olsen for reoair.
l AID
Top
Error.
19
10
11
23-2
I
System Errors, (can't)
I
Error Meaning
l=:rror
~
12
~
Corrective Action
Shorted RTD Sensor Probably either the temperature probe is damaged or;
BOTTOM Error.
the connection is loose. You can temporally switch
the wires for the TOP RTD with those for the
BOTTOM RTD. Turn the power off and on, if the
error is now 14 the problem is definitely the probe. If
Error 12 still shows up, note the error and return the
unit to Tinius Olsen for repair.
--~
13
I
Open
TOP
RTD
If the MP993a is being used on an older model
extrusion plastometer with a single zone temperature
probe, the error can be caused by the number of
zones being set at 2 in the Setup Mode. If that is not
Sensor
Error.
!
14
15
the case, probably either the temperature probe is
!damaged or a connection is loose.
Yau can
temporally switch the wires for the TOP RTD with
those for the BOTTOM RTD. Turn the power off andi
on, if the Error is now 11 the problem is definitely the
probe. If Error 13 still shows up, note the error and
return the unit to Tinius Olsen for repair.
Shorted RTD Sensorl Probably either the temperature probe is damaged or
TOP Error.
the connection is loose. You can temporally switch
the wires for the TOP RTD with those for the
BOTTOM RTD. Turn the power off and on, if the
Error is now 12 the problem is definitely the probe. If
Error 14 still shows up, note the error and return the
unit to Tinius Olsen for repair.
Low BatteryError
Turn the power off and then on again. If the problem
I
persists, note the error number and return the unit to
Tinju~lsen for repair.
f16'
17
i
High
Temperature, The temperature sensed by the BOTTOM RTD in the
Alarm BOTTOM Error. Itemperature probe exceeds the High Temp. Alarm
entered in the Setup Mode. Check this value and
make sure it exceeds the highest Setpoint used by
5°C. DO NOT EXCEED 455°C. Turn the power off
and on, if Error 16 still shows up it may be caused by
an intermittent short in the temperature probe wires.
High
Temperature The temperature sensed by the TOP RTD in the
,Alarm TOP Error.
temperature probe exceeds the High Temp. Alarm
entered in the Setup Mode. Check this value and
make sure it exceeds the highest Setpoint used by
5°C. DO NOT EXCEED 455°C. Turn the power off
and on, if Error 17 still shows up it may be caused by
an intermittent short in the te_rr!~!ur~
~r9_~~_wi[es. J
23-3
23.3
Electrical Checks
23.3.1 Refer to APPENDIX A for the MP993a Controller Specifications,
Connections and Jumper Locations as shown on Drawing 5-6-479 and
Motorized Weight Lowering Device Wiring Diagram 8-12-1256.
The
MP993a Controller will need to be removed for these checks. BE SURE
THE POWER IS DISCONNECTED from the melt indexer COntrOuer
before removing.
23.3.2 The heater bands can be checked with an ohm meter by measuring the
resistance at the Main Terminal Strip located on the rear of the MP993a
Controller. The resistance between Terminals TOP and L 1 (Wires T and
C) should be 75 ohms :t.5%. The resistance between Terminals BOT
and L 1 (Wires B and C) should be 80 ohms :t5%. The resistance
between Terminals TOP and BOT (Wires T and B) should be 155 ohms
:t5%. The resistance between any of the wires to the case of the heater
should be above 10 Megohms.
23.3.3 The Dual Zone Temperature RTD Probe can be checked with an ohm
meter. This probe has six wires. The two black wires and the green
wire are for the TOP Zone. With the two black wires shorted, check the
resistance between the black wires and the green wire. The resistance
measured will vary with the temperature of the probe. This resistance
should be approximately 100 ohms at DoCand about 109 ohms at 23°C.
The BOTTOM Zone is tested in the same manner except that the two
red wires are shorted and the resistance is measured between the red
wires and the white wire. There should be no continuity between any of
the wires and the case of the probe.
23.3.4 The MP993a Controller, with both heater zones on full, draws about 3 to
4 Amps at 115 VAC service and 1.5 to 2 Amps at 230 V AC service.
23.3.5 The
motor for the optional Motorized Weight Lowering Device draws
about 0.4 Amps at 115 VAC service and about 0.2 Amps at 230 VAC
service.
23-4
24 Section 24 - Recommended Spare Parts List
24.1
The following list of items is induded to help prevent lost time in the use
of this piece of equipment due to normal wear of parts, electronic
component failure and accidental breakage.
[DESCRIPTION
IPA"Ji:f NOM B E R
rBOOKLET
I REFERENCE
PISTON FOOT
Stainless Steel
iORIFICE
Stainless Steel
HARGING
- IP
-
["02001086-
I
i
THERMOMETERS
(5-6-90A)
SPECIFY
iTEMPERATURE
rRTD TEMPE~URE I102001407
ISENSOR
-
FIGURE 3-1
24~1
RECOMMENDED
QUANTITY
!2
IFIGURE~
12
'FIGURE3-1
12
--
IFIGURE 3-1-
[WiRINGDIAGRAM
18-12-1256
PROBE
[
1 (Each Temperature)
APPENDIX A
TYPICAL ASSEMBLY DRAWINGS
WITH PARTS LIST
& WIRING DIAGRAMS.
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MP 993
CONTROLLER
(10'
INTERFACE
Shielded
Cables)
CBSoGNDo1<1
'1'X 2<--~ax 3<
25 PIli
MALE
CONNECTOR
TO PRINTER
IUS
4<
~
5<
DSR. 6<
GIlD 7<
CD 8<
11<
12<
0<
HI-PRINTER
9 PIli
FEMALE
COIDIECTOR
TO COMPUTER
CONNECTIONS
~1
JL:
1,1 t
I
I
>2
>3
>&-,
>5-.J
>6
>7
>
>
>
>
25 PIN
TO MP 993
AHE SERIAL CABLE - PIN 90002871
r-CD
1>
>1
I
'-DSR
2
3
4>
5
6>
>2
>3
>~
>~
>6
,US
7>
>7
~
8>
>8-
ax
n
-MR.
GIlD
RI9>
25 PIN
CONHECTOR
>11
>12
(RS-232/423)
AXE CABLE - PIN
A-9
MALE
TO MP 993
>20--
HI-INTERFACE
MALE
CONNEC'roR
90002820
APPENDIX B - USING EARLIER ACTUATING SWITCHES WITH THE MP993a
CONTROLLER
USING A MECHANICAL
CONTROLLER
ACTUAriNG
SWITCH
WITH
THE
MP993a
8.1.1 The old style, Mechanical Actuating Switch (clear plastic cover and round in
shape) can be used with the MP993a Controller. Refer to Drawing 5-6-479
for the proper connections.
8.1.2 Enter the Global Setup Parameters Mode, and set the "Switch/Pickup
Type" to "1". Typically, a "Delay Time" of 5.0 seconds is used for this type
switch. Refer to Paragraph 12.2.7 of these instructions for an explanation
of the "Delay Time".
B.1.3.The distance that is measured is dependent on how the switch has been
set up. The standard switch is set up to measure either X" or 1" of piston
travel. A lever on the mechanical actuating switch is used to select the
distance to be measured by moving the adjustable contacts in the switch.
Before using the Mechanical Actuating Switch, the distances .MUSTB~
VERIFIED
with a micrometer
height
andthethelarge
actual
distances
recorded. . Adjustments
can beormade
by gauge
removing
screw
on the
top of the clear cover, and with a small bladed screwdriver, reaching
through this hole to the adjustable contact underneath.
8.1.4 The actual distancethat the switch is set for MUST be entered as "Piston
Travel Cap 1" in the ProgramTest ParameterS~e.
Refer to Paragraph
13.3.11 of these instructionsfor an explanationof "PistonTravel Cap 1".
USING A FLAG PROGRAMMABLE ACTUATING SWITCH WITH THE MP993a
CONTROLLER
8.2.1 The old style Flag ProgrammableActuatingSwitch (aluminumin color and
rectangularin shape) can be used with the MP993a Controller. Refer to
Drawing5-6-479for the properconnectionsand the location of the OPTO.
ADJUST Pot which is used in the set up and calibration of this actuating
switch.
8.2.2 Enter the Global Setup Parameters Mode, and set the "Switch/Pickup
Type" to "2". Typically, a "DELAY TIME" of 5.0 seconds is used for this
type switch. Refer to Paragraph 12.2.7 of these instructions for an
explanation of the "DELAY TIME".
8.2.3. The distance that is measured is dependent on the flag used with the
switch. Make sure that the Piston Travel(s) entered in the Program Test
Parameters Mode agree with the flag being used.
B-1
8.2.4. A special Test Type can be used with the Flag Programmable Actuating
Switch. This Test Type is 82. Test Type 82 can only be used with this
type of switch. Test Type 82 is primarily designed to work with Flag #18
which measures two %" Piston Travels separated by a %" Piston Travel.
The flow rate for each of the %" travels is obtained as well as the flow rate
from the beginning of the first %" travel to the end of the second %" travel
(1.0"). For a # 18 flag enter 0.25" for "Piston Travel Cap 1", 0.5" for
"Piston Travel Cap 2", and 0.25" for "Piston Travel Cap 3".
8.2.5 Calibration
8.2.5.1 The Flags must be setup and calibrated with that particular
MP993a and Flag Actuating Switch as a system. If there is more
than one melt indexer with this type of switch at the same
location, care should be taken to insure that the Flags or
Programmable Actuating Switches are not interchanged between
the different units.
8.2.5.2 The measuring distances should be verified using an optional
Tinius Olsen MP993a Actuating Switch Calibrator, a Micrometer
Height Gage or similar device operating the follower arm of the
switch. Set the MP993a Controller up for a Type 8 Test and
enter the Actual Piston Travel(s) in the Test Parameters. An
EXT. SW. red LED is also provided on the timer. This LED
illuminates when the switch is activated.
B.2.5.3 If needed,the MP993a has an OPTO. ADJ. POT mounted on the
MP993a's rear P.C. Board that can be adjusted for calibrating the
measuring distances. This trim pot controls the brightness of the
Optical Sensor in the switch. If the flag(s) are not measuring the
exact distance, enter the Actual Measuring Distances in the Test
Parameters. For example, if the 1" Flag is actually measuring
0.995", enter 0.995" as the Capture Distance in the Test
Parameters.
B-2
II)
&
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T1
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--7
1.
-r'
B-4