DIL 402 PC
Operating Instructions
Operating Instructions DIL 402 PC
Contents
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Chapter I
General Information
Chapter II
Installation
Chapter III
System Components
Chapter IV
Operation
Chapter V
Appendix
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DIL 402 PC
Chapter I
General Information
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DIL 402 PC
General Information
Information
In the design of your instrument, we endeavor to take individual solutions
into
account
and to
include these
in
the documentation.
However, in order to keep the scope of the technical documentation at a
reasonable level, we must limit the description to a standard model.
We ask for your understanding, if additional information particular to your
instrument is not included within the scope of the standard instructions.
This additional information can always be found on the corresponding
information sheets.
Prior written permission from NETZSCH-Gerätebau GmbH is required for
electronic or mechanical duplication and distribution of these instructions.
All technical data, instrument features and other information described in
these operating instructions are presented to the best of our knowledge and
in accordance with the technical standards of the instrument at the time of
printing.
We welcome any comments, suggestions or new ideas concerning the
instrument and these operating instructions. Please address them to:
NETZSCH-Gerätebau GmbH
Wittelsbacherstraße 42
D - 95100 SELB
Telephon: 09287/881- 0
Telefax:
09287/881- 144
E-Mail:
at@ngb.netzsch.com
Internet:
http://www.netzsch-thermal-analysis.com
Maintenance and service must be carried out by NETZSCH Customer Service
personnel.
A service contract is available for our customers.
This instruction manual is provided to give the customer information on
proper operation of the instrument. NETZSCH-Gerätebau GmbH will accept
no liability for damage resulting from improper use.
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1
DIL 402 PC
General Information
Notes on the Use of this Manual
In this manual, the symbols described below are used to simplify orientation.
NOTE
This sets particularly important information apart from the rest of
the text.
ATTENTION!
These instructions must be followed exactly to avoid injury to the
user and damage to the instrument.
This symbol refers to more detailed information which can be
found elsewhere, e.g. in the Software Manual.
The tools listed after this symbol are required for the installation
or modification of your instrument.
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2
DIL 402 PC
General Information
Basic Safety Information
State-of-the-Art
• Your instrument has been produced with state-of-the-art
technology and is safe to operate.
Authorized
Operation
• Any operation of the instrument other than as authorized
requires consultation with NETZSCH.
Any use exceeding the (expanded) authorized operation is
considered unauthorized. The manufacturer will not be
liable for any damage resulting from such use.
Manufacturer's
Requirements
• Authorized operation of the instrument includes compliance
with manufacturer's requirements regarding installation,
commissioning, operation and maintenance.
Training of
Personnel
• Your instrument may only be operated and maintained by
authorized, trained and individually instructed personnel
who have been informed of possible sources of danger.
Responsibility
• Responsibility for commissioning, operation and
maintenance must be clearly defined and compliance must
be ensured. The resulting responsibilities can be clearly
resolved under the aspect of safety.
Unauthorized Access
• The operator must make sure that only trained personnel
work on the instrument.
Improper Operation
• Any type of operation which reduces the safety of the user
and the operability of the instrument should be avoided.
Unauthorized
Changes to the
System
• Unauthorized modifications and changes which effect the
safety of the instrument are not permitted.
Obligation to Report
Changes to the
System
• The user is obligated to immediately report to the operator
in charge any changes to the instrument which effect the
safety of the system.
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3
DIL 402 PC
General Information
Maintenance
Obligation
• The operator of the system must ensure that the instrument
is operated in perfect condition at all times.
Proper Set-up of the
Work Stations
• The operator must guarantee the openness and cleanliness
of the work stations at the instrument through appropriate
instruction and inspections.
Shut-down
• For all maintenance work, the instrument must be switched
off and unplugged.
Removal of
Protective Devices
• Protective devices may only be removed when the
instrument is switched off and unplugged. It is imperative
that the protective devices be replaced before starting the
instrument.
Checks following
Maintenance or
Repair Work
• After maintenance or repair work, a check should be made
to ensure that all protective devices are in place and operate
properly. Only then should the instrument be started.
Industry-specific
Accident Prevention
Regulations
• The operator must observe the relevant regulations and
protective measures when handling the required gases. In
addition, possible reactions with the materials used must be
considered. At operating temperatures above 55°C,
protective gloves must be worn. In any case, the industryspecific and local accident prevention regulations are also
valid for the instrument.
Disposal of
Production Materials
• Production materials are to be disposed of according to local
regulations.
Maintenance or
Repair
• Products sent in for maintenance or repair should, to the
extent possible, be free of harmful substances (e.g.
radioactive, toxic, caustic or microbiological materials).
Otherwise, the type of contamination must be declared.
Products not explicitly declared to be "free of harmful
substances" will be decontaminated at the expense of the
sender.
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4
DIL 402 PC
Operating
Instructions
General Information
• Using the Operation Manual, the operator should prepare
operating instructions which specify the actions and tasks
required for safe operation.
The operating instructions should be placed in a suitable
location in the work place and complied with by the
employees.
Gases
• Observe the relevant regulations and protective measures
when handling the required gases.
Consider possible reactions with the materials.
Warning signs should be hung in the appropriate places in
accordance with national and regional regulations.
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5
DIL 402 PC
Chapter II
Installation
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DIL 402 PC
Installation
CONTENTS
INSTALLATION ......................................................................................................1
PACKING AND DELIVERY ............................................................................................... 1
LOCATION REQUIREMENTS ............................................................................................ 2
INSTALLATION SCHEMATIC............................................................................................. 3
ELECTRICAL CONNECTIONS ............................................................................................ 4
IMPORTANT NOTES FOR SOFTWARE INSTALLATION ......................................................... 5
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DIL 402 PC
Installation
Installation
In most cases, your DIL 402 PC is set up and commissioned
by one of our customer service engineers.
If you would like to set up your instrument yourself, please
read the following sections.
Packing and Delivery
− We deliver all components in separate cartons. The measuring
unit, electronics, computer system etc. are packed in formmolded foam to protect against damage during transport.
− We recommend keeping the original cartons.
− Should repairs or an extension of the system become
necessary, the cartons can be reused, thus ensuring a relatively
safe return to the manufacturer.
− Prior to shipping, we carefully test all components of the
system for mechanical and electrical operability.
− After unpacking, please check all delivered components for
possible transport damage and compare the individual items
against the delivery note supplied.
Should an item be missing, please contact us immediately.
Telephone:
Telefax:
E-Mail:
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0049 9287/881- 155 (Service Hotline)
0049 9287/881- 144
service@ngb.netzsch.com
1
DIL 402 PC
Installation
Location requirements
Select the optimal component arrangement for the space you
have available.
The location of your instrument must meet the following requirements:
constant temperature conditions (room temperature) to the
extent possible
no direct sunlight on the instruments
dust-free environment to the extent possible
stable tables
measuring system
A stable, shock-absorbent table with a working surface of
approx. 2.5 m x 1 m, is required for the measuring device
(measuring unit, computer, printer).
An installation schematic of the measuring system follows
on the next page.
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2
DIL 402 PC
Installation
Installation schematic
980
depth 450
470
500
depth 500
computer
weight 10.5 Kg
printer
weight: 8 Kg
270
500
810
depth 260
measuring part 402 PC
wide range power pack
100-240 V, 6 A
weight: 20 Kg
table
monitor
weight: 3.5 kg
wide range power pack
100-240 V, 6 A
365
depth 500
200
option
or provided by the customer
power unit
230 V, 16 A
weight: 36 Kg
floor
Figure 1: Optional arrangement – DIL 402 PC
Figure 1 shows an arrangement of the instruments which has proven to be practical.
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3
DIL 402 PC
Installation
Electrical connections
• Connect the measuring unit, power unit and computer system to one another with the
supplied cables according to Figure 2.
Connect the power unit on a separate electrical phase.
• Plug the measuring part, power unit and computer system into the power supply.
L3
L2
L1
N
PE
fur nace c ontrol
U SB
pow e r s upply
furnace control
Figure 2: Cable diagram electrical connections
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4
DIL 402 PC
Installation
Important notes for Software installation
Your DIL 402 PC instrument communicates with the PC using the USB interface of the PC. This
requires the installation of suitable drivers delivered together with the Proteus Software.
→ Before initially connecting the DIL 402 PC the Proteus Software must be installed first. For
details of installation, please read chapter 3 and chapter in the document “NETZSCH Proteus
Software”.
Notes
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Do not use USB hubs (connect your DIL 402 PC directly to the PC).
Use the original USB cable delivered from NETZSCH.
If you accidentally change the USB interface on the PC the Plug&Play procedure will start
again to install the drivers for this interface. Please note that this procedure has to be
done for any “not yet” connected USB interface.
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DIL 402 PC
Chapter III
System Components
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DIL 402 PC
System Components
CONTENTS
SYSTEM COMPONENTS ..........................................................................................1
MEASURING UNIT ........................................................................................................ 2
PRINCIPLE OF OPERATION .............................................................................................. 3
FRONT PANEL .............................................................................................................. 4
SAMPLE HOLDER.......................................................................................................... 5
SAMPLE THERMOCOUPLE .............................................................................................. 7
FURNACE - MIDDLE RANGE (6.215.2-15) .................................................................. 8
FURNACE - HIGH RANGE (6.215.2-26) ....................................................................... 8
PURGE GAS CONNECTION .............................................................................................. 9
POWER UNIT ............................................................................................................. 10
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DIL 402 PC
System Components
System Components
The DIL 402 PC measurement device consists of the following components:
• Dilatometer (measuring unit)
• Power unit
• Computer system, screen, printer
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1
DIL 402 PC
System Components
Measuring unit
tube
adjusting
screw
slider knob
furnace
support
base plate
control panel
Figure 1: Measuring unit (closed)
sample holder
Figure 2: Measuring unit (open)
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DIL 402 PC
System Components
Principle of operation
sample
thermocouple
displacement transducer
(LVDT)
sample carrier
pushrod
control
thermocouple
on
sample
furnace
power
position
0
DIL 402 PC
base plate / control panel
Figure 3: Schematic diagram of DIL 402 PC (measuring unit closed)
The sample is placed in the homogenous temperature zone of the furnace. The furnace is
heated according to a preselected temperature program. The furnace temperature is controlled
by the control thermocouple. The sample is submitted to a temperature-dependent change in
length. The sample temperature is measured by the sample thermocouple. Sample carrier and
pushrod are also submitted to a change in length. Thus there is measured and registered the sum
of change in length of the sample, the sample carrier and the pushrod. The pushrod transmits
this change in length mechanically to the displacement transducer (LVDT) and causes a
displacement of the core of the displacement transducer (LVDT). The resulting change in voltage
is transformed by a carrier frequency measuring amplifier to a d.c.voltage which is proportional
to the displacement. The signal is is registered by a computer.
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DIL 402 PC
System Components
Front panel
adjusting
screw
control panel
on
power
position
0
DIL 402 PC
Figure 4: control panel
Control panel
Label
Function
on
Control LED: power supply to measurement unit on/off
power
Control LED: furnace heating on/off
position
LED´s: pushrod position
Adjusting screw:
The position of the pushrod can be adjusted with the adjusting screw. The direction of the
movement is indicated by the luminous band. For starting a measurement the pushrod should be
positioned so that only the LED in the middle (0) is on (central position of the displacement
transducer, measurement range ± 2.5 mm).
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DIL 402 PC
System Components
Sample holder
The dilatometer can be equipped with a tube sample holder (Figure 5).
The sample holder is available in aluminum oxide or fused silica. Because of its low coefficient of
expansion, fused silica is especially suitable for the determination of very small length changes.
The rod sample holder stands out due to a very homogeneous temperature distribution around
the sample.
Tube-type sample holder
sample
push rod
tube
on
power
position
0
DIL 402 PC
Figure 5: Tube sample holder
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−
At temperatures above 900°C, fused silica tends towards irreversible transformations.
Do not use the fused silica sample holder for the absolute determination of the
expansion coefficient for measurements above 900°C.
−
Analyses, which serve only to compare individual samples, can also be run with the
fused silica sample holder to 1100°C.
−
If application areas overlap (absolute determination, comparative measurements), we
recommend acquisition of separate sample holder systems.
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5
DIL 402 PC
A
pushrod
System Components
spacers
sample
B
pushrod
sample
supports
Figure 6: (A) spacers prevent the sticking from the sample, B supports for positioning
of the sample (for samples: Ø 4mm, 6 mm and 8 mm)
Special sample holders are available for testing pasty and powdery samples. The sample is placed
between two stamps in a cylindrical container.
container
sample
rod
Figure 7: Sample holder for powdery and pasty samples
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DIL 402 PC
System Components
Sample thermocouple
• located in the sample holder
• Pt-Pt/Rh thermocouple (Type S)
• flexible, can be adjusted to different sample positions
sample thermocouple
sample
Figure 8: Location of the sample thermocouple
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DIL 402 PC
System Components
Furnace - Middle Range (6.215.2-15)
insulation
heating element
protective tube
Figure 9: Schematic of the middle range furnace
• temperature range 25 ... 1200°C
• tube furnace with resistance coiling
• control thermocouple type S
• recommended heating rate for dilatometer measurement: < 5 K/min
• electrical supply: max. 180 V
Furnace - High Range (6.215.2-26)
insulation
heating element
protective tube
Figure 10: Schematic of the high range furnace
• temperature range 25 ... 1600°C
• tube furnace with resistance coiling
• with integrated protective tube for gas flow
• control thermocouple type S
• recommended heating rate for dilatometer measurement: < 5 K/min
• electrical supply: max. 125 V
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DIL 402 PC
System Components
Purge gas connection
Measuring system and sample chamber can be purged with gas.
The purge gas inlet is placed on left cover plate of the measuring system.
Using a purge gas (dry, inert) avoids the contamination of the measuring system by reaction
products evolved from the sample.
Recommended gas flow rate: 100 – 150 ml/min
Maximum input pressure: 0.5 bar
purge gas
connection
gas supply
gas flow
(6.217.1-40)
Figure 11: connecting the gas flow
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DIL 402 PC
System Components
Power unit
Dimensions in “mm”: (365 x 200 x 500)
1 2 3
4
5
Figure 12: Power unit - front
6
7
8
9
Figure 13: Power unit - rear
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DIL 402 PC
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System Components
1.
LED – "on line" instrument switched on /off; LED on /off
2.
LED – "power" – indicates furnace heating
3.
LED – "fuse" – indicates a defective fuse in the power pack
4.
LED – "limit" – indicates an exceeding of the preadjusted current limit value
5.
main switch (power unit on/off)
6.
fan (instrument cooling)
7.
furnace operation (plug connection from measuring unit)
8.
furnace control system (connection to measuring unit)
9.
AC line /230V (connection to power supply)
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DIL 402 PC
Chapter IV
Operation
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DIL 402 PC
Operation
CONTENTS
OPERATING THE INSTRUMENT .................................................................................1
MEASUREMENT PREPARATIONS ............................................................................1
SAMPLE PREPARATION .......................................................................................1
SOLID SAMPLES ........................................................................................................ 1
PASTY SAMPLES ....................................................................................................... 2
POWDERY SAMPLES .................................................................................................. 2
INSTRUMENT PRESETTINGS ..................................................................................3
INSERT SAMPLE ........................................................................................................ 3
POSITIONING THE THERMOCOUPLE .............................................................................. 4
CLOSE MEASURING UNIT ........................................................................................... 4
GENERATION OF THE REQUIRED SAMPLE ATMOSPHERE (SAFETY NOTES) ............................ 5
START A MEASUREMENT .....................................................................................8
TROUBLE SHOOTING LIST ......................................................................................14
DIAGNOSIS .....................................................................................................15
OTHER SCREEN MESSAGES ................................................................................16
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DIL 402 PC
Operation
Operating the instrument
Measurement preparations
Carefully select the test conditions prior to the measurement according to the composition of
the sample material and the expected effects.
The following parameters should be given special attention during preparation for the
measurement:
• sample preparation
• temperature program
• sample chamber atmosphere
Sample preparation
Sample composition: solid, plastic, powdery
Form of sample: predominantly cubic or cylindrical, triangular or n-angular also possible
Sample dimensions: rod sample holder:
max. ∅ 8 mm, length: 0 to 25 mm (25 to 50 mm optional)
tube sample holder:
max. ∅ 12 mm, length: 0 to 25 mm (25 to 50 mm optional)
Solid samples
•
The sample is sawn or cut from a larger piece of material. It can also be pressed or cast. The
preparation of the sample can affect the measurement results. Information on sample
preparation specifications can be found in the existing test standards (e.g. DIN 51045, DIN
52328, DIN 53752).
•
Grind the end surfaces of the sample plane parallel and smooth. Depending on the degree
of hardness, use either emery paper or a grinding machine. Make sure that the end surfaces
are even and at right angles to the longitudinal axis of the sample and free of ridges and
foreign particles.
•
For measurement of the sample length, use a slide caliper rule or micrometer screw.
According to DIN 51045, the sample length must be determined with a precision of 0.002 L0
(L0 = initial length of the sample at 20°C).
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DIL 402 PC
Operation
Pasty samples
These samples must be molded and predried.
Powdery samples
These sample can be pretreated by:
• pressing
• binding with adhesives or plastic clays (followed by
molding and predrying)
A special sample holder for testing pasty and powdery samples is shown in Figure 1 . The sample is
placed between two stamps in a cylindrical container.
container
sample
stamps
Figure 1: Sample holder for powdery and pasty samples
The sample holder is available in graphite, alumina and fused silica.
picture
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material
order-no.
alumina
6.219.1-60.1
fused silica
6.219.1-60.2
sapphire
6.219.1-60.3
2
DIL 402 PC
Operation
Instrument presettings
•
Switch on computer, measuring unit and printer about one hour before starting the
measurement.
Insert sample
ATTENTION!
Before opening the dilatometer, always make sure that sample temperature is
no higher than 100°C.
• Slide the furnace to the right to the limit stop.
• Slide the pushrod to the left.
• If necessary, remove the sample from the previous measurement.
• If required, place the support rings in the sample holder.
• Use tweezers to insert the sample.
NOTE
The pushrod is a sensor for recording the length-change signal. The sample is
not held in place by the pushrod. The sample must not tilt when in the
measurement position.
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DIL 402 PC
Operation
Positioning the thermocouple
• Carefully bend the sample thermocouple as close to the center of the
sample as possible.
ATTENTION!
The thermocouple must not touch the sample - danger of alloy formation or
chemical corrosion.
The thermoelectric wires must not come in contact with one another (except
at the bead hot-junction).
Close measuring Unit
• Slide the furnace carefully to the left to the limit stop.
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DIL 402 PC
Operation
Generation of the required sample atmosphere (Safety Notes)
ATTENTION!
Under no circumstances may explosive gas mixtures be used.
Information concerning the possibility of using various gases can be found in the appropriate
technical literature or can be requested from the manufacturer or retailer of gases.
The following is a selection of purge gases including their limiting properties. The list makes no
claim on being complete.
Helium (He)
Chemically inert (inert gas)
No technical safety limitations
Argon (Ar)
Chemically inert (inert gas)
Asphyxiating
No technical safety limitations
Argon should not be used for low temperature investigations
Nitrogen N2
Largely inert
Asphyxiating
No technical safety limitations, but sample reactions are possible in the high temperature range.
Air
Oxidizing
No technical safety limitations, but sample reactions are possible. Application is possible above
room temperature (maximum application temperature is determined by furnace material,
sample holder type, crucible material).
Oxygen (O2)
Increases flammability
(must not come into contact with fats or oils)
No technical safety limitations, but hefty reactions are possible with the sample.
Application is possible above room temperature (maximum application temperature is determined by furnace material, sample holder type, crucible material).
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DIL 402 PC
Operation
Carbon dioxide (CO2)
Non-toxic
(MAK value 5000 vpm),
Non-flammable
Application is possible above room temperature.
Hydrogen (H2)
The instrument is not destined and suitable for use under hydrogen atmosphere.
It can happen that explosible mixtures are formed inside the system during the respective
experiments.
Ammonia (NH3)
Toxic
(MAK value 50 vpm),
Flammable
Danger of explosion when in contact with oxygen.
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Corrosion of seals is possible.
Carbon monoxide (CO)
Toxic
(MAK value 10 vpm),
Flammable
Corrosive
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Hydrogen sulphide (H2S)
Toxic
(MAK value 10 vpm),
Flammable, corrosive
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Other reducing gases or gas mixtures
For safety reasons it is not possible to use these gases as contact with oxygen or air could result
in an explosive compound. However, certain gas compounds with inert gases are possible where
the mixture ratio excludes all technical safety doubts while complying with the required
analytical conditions. The manufacturers of gases and gas mixtures can provide the required
information.
Chlorine (Cl2)
Very toxic
(MAK value 5 vpm),
Non-flammable, corrosive, caustic
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
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DIL 402 PC
Operation
Hydrogen chloride (HCl)
Toxic
(MAK value 5 vpm),
Non-flammable, corrosive, caustic
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Sulphur dioxide (SO2)
Toxic
(MAK value 2 vpm),
Non-flammable, corrosive
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Fluorine (F2)
Very toxic
(MAK value 0.1 vpm),
Encourages burning, corrosive, caustic
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Hydrogen fluoride (HF)
Very toxic
(MAK value 3 vpm),
Very caustic, corrosive
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
Gaseous hydrocarbon
Can form explosive gas mixtures with air
For safety reasons it is forbidden to use an instrument that has been installed in the normal way.
MAK values 1998
We recommend that the expelled purge gas be passed into a suitable exhaust hood. The
measuring part must be sufficiently purged with inert gas once the measurement is finished.
• Set the required flow rate for the purge gas on the flow meter (optional).
• Enter the measurement parameters (software).
• Start the measurement program.
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DIL 402 PC
Operation
Start a measurement
• set up a measurement,
• create a correction curve,
• and then to measure a sample.
Switch on the
computer system.
Switch on the
power unit.
Prepare the
sample.
Determine the
sample length at
room temperature.
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DIL 402 PC
Operation
Slide the furnace
to the right limit
stop.
If necessary, place
sample supports in
the sample holder.
Place the standard
sample (e.g. Al2O3
sample) on the
sample supports.
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DIL 402 PC
Operation
Using the
adjusting screw,
slide the pushrod
towards the
sample.
Position the
thermocouple close
to the sample.
The thermocouple
must not come into
contact with the
sample.
Slide the furnace
carefully to the left
to the limit stop.
The sample holder
must not come into
contact with the
protective tube.
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DIL 402 PC
Operation
Optional:
Open the purge
gas supply.
purge gas
connection
gas supply
gas flow
(6.217.1-40)
Start the
measurement
software.
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DIL 402 PC
Operation
File Menu
New
Proceed as follows
to create a
correction curve
with a standard
(e.g. Al2O3).
DIL 402 PC Measurement Header
Measurement Type: Correction
Open Temperature Recalibration
Open Table for Sample Holder Material (e.g. Al2O3.scl)
Open Table for Calibration Material (e.g. Al2O3.scl)
Define Temperature Program
Define File Name
The program switches to the
Adjustment Dialog
Set the transducer
position,
measuring range
and temperature
threshold values in
the Adjustment
dialog box.
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DIL 402 PC
Operation
Start the
measurement.
File Menu
Open
Use File from Correction Measurement!
Define Test Parameters:
Measurement Type: Sample+Correction
Run a sample
measurement
according to the
following flow
chart, including the
correction
measurement:
Open Temperature Recalibration
Accept Temperature Program
Define File Name
Continue with Adjustment Dialog
After completion
of the
measurement, you
can begin the
analysis.
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DIL 402 PC
Operation
Trouble shooting list
error
sporadic or
permanent jumps in
the dL curve
(especially in the
cooling curve)
results seem to be
incorrect
possible reasons
end faces of the sample not
plane
grind sample plan parallel
sample is tilted
put in sample again
sample holder is defect
(cracks)
change sample holder
thermocouple touches the
sample
readjust thermocouple
sample holder may be
contaminated by reaction
products evolved by the
sample
measure standard sample
(sapphire, Al2O3)
contamination of sample
thermocouple
check thermojunction
(magnifying glass)
expansion of the measuring
system (correction curve)
wasn’t considered
make a new measurement
using a correction curve
heating rate > 10 K/min
make a new measurement
with heating rate 5 K/min
furnace does not heat check power supply of the
power unit
program „dies“ or
„hangs up“
02/05
possible remedy
change fuse if necessary
LED fuse (power unit) lights
change thyristor fuse
LED limit (power unit) lights
call NETZSCH-customer
service
computer, and power unit
are connected to the same
phase
reconnect the instruments:
computer, to one phase,
power unit to another phase
install line filter
trace reasons for trouble in
surroundings:
refrigerators, defect neon
lamps, radiators
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14
DIL 402 PC
Operation
Diagnosis
In the status line of the computer screen there will appear several messages during normal
operation or failure conditions (the values in the middle and right columns are only examples):
1.
OFF
2.
INITIALIZATION
3.
ON
e.g. 10,5 µm
21.0°C
ON
OVF
21,3°C
ON
UNF
22,0°C
Ext. Res.
10,5 µm
21,0°C
Ext. Res.
10,5µm
UNF
4.
5.
6.
7.
Causes:
1. Normal display for some seconds after connecting the power supply to line.
Power supply not on line or defective.
See LED bar „on line“ on the front panel of the 402 PC
USB cable not connected.
2. Normal display after some seconds. Computer is looking for communication with dilatometer
electronics.
3. Communication successful. Micrometers are displayed (e.g. 10.5 µm).
4. Dilatometer in (+) overflow. Switch to 5000 µm range and turn micrometer-screw
clockwise.
Problem with carrier frequency amplifier signal path.
5. Dilatometer in (-) underflow. Switch to 5000 µm range and turn the micrometer-screw
counterclock-wise.
Problem with carrier frequency amplifier (see 4.)
No sample.
6. External reset. Control thermocouple not connected or interrupted (21.0°C temperature
sample thermocouple).
Power unit switched off.
Power unit disconnected from 37 polar sub-D-socket.
Transformer in power unit overheated.
7. External reset. Sample thermocouple not connected or interrupted.
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DIL 402 PC
Operation
Other screen messages
When starting the measurement, one of the following pictures may appear on the screen:
Causes:
- most probable furnace not closed
- switch defective or wiring interrupted.
Furnace 1 = 1200°C furnace (middle)
Furnace 2 = 1600°C furnace (high)
Causes:
Setup mismatch. Furnace changed without
correction of the instrument setup.
Go into instrument setup and select the
furnace you want to use.
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DIL 402 PC
Chapter V
Appendix
DIL 402 PC
Appendix
CONTENTS
TECHNICAL DATA ..................................................................................................1
ASSEMBLY OF THE SAMPLE HOLDER SYSTEM AND THERMOCOUPLE.................................2
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DIL 402 PC
Appendix
Technical data
Dilatometer 402 PC
Electronic Dilatometer with digital data
acquisition and digital control
Measurement path:
± 2.5 mm
Resolution of data acquisition:
16 Bit
Measuring ranges:
5000/500 µm
Contact pressure:
15-45 cN (25 cN preadjusted)
Interface to PC:
USB
Type of furnace control:
digital controller
Sample holder
Type:
tube sample holder / rod sample holder
Material:
fused silica (RT … 1100°C)
Al2O3 (RT … 1600°C)
Sample dimensions
Length:
0-25 mm
(25-50 mm possible)
Diameter:
3-12 mm
Atmosphere in the sample chamber:
dynamic gas flow (inert gases only)
Temperature range:
20 ... 1600°C (different furnaces)
middle range RG: 20 ... 1200°C
high range 1: 20 ... 1600°C
Heating rates:
recommended for dilatometer
measurements < 5 K/min
Dimensions:
width: approx. 810 / 980 mm
Measuring unit (closed)
height: approx. 270 mm
depth: approx. 260 mm
Power supply:
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100-240 V, 50/60 Hz
1
DIL 402 PC
Appendix
Assembly of the sample holder system and
thermocouple
The sample holder system consists of following components:
sample thermocouple
pushrod
sample holder tube
A
sample thermocouple
B
pushrod
C
sample holder tube
Check that all parts are provided.
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DIL 402 PC
Appendix
Assembly
sample holder
tube
1. Push the sample thermocouple through
metal bush
the hole into the metal bush.
ATTENTION!
Turn the thermocouple so that when
looking from above the wires are placed
horizontally.
top view
sample
thermocouple
wires of the sample thermocouple
correct
sample
sample holder tube
top view
wires of the sample thermocouple
incorrect
sample
sample holder tube
2. Affix the sample thermocouple on the
metal bush with the allen screw.
allen screw
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metal bush
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DIL 402 PC
Appendix
sample
thermocouple
3. Affix the sample thermocouple on the
wire
sample holder tube by means of a short
Pt wire.
sample holder tube
adjusting screw
4. Pull out the knob of the adjusting
screw.
knob
5. Loosen the hexagon head screw by
means of a socket wrench.
socket wrench
adjusting screw
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6. Remove the adjusting screw.
4
DIL 402 PC
Appendix
tube
7. Loosen both allen screws on the tube.
allen screws
tube
8. Remove the tube (push it forwards).
ATTENTION!
While removing the tube hold it tight
with both hands so that it cannot fall
onto mechanical parts of the measuring
system!
furnace
9. Loosen the allen screw on each side of
the furnace.
allen screw
allen screw
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DIL 402 PC
furnace
sample holder tube
Appendix
10. Remove the furnace.
11. Push the pushrod into the sample
holder tube.
pushrod
sample holder tube
12. Push the sample holder tube with
pushrod into the measuring system.
ATTENTION!
Take care that the open area of the
sample holder tube is placed parallel to
the base plate!
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DIL 402 PC
Appendix
allen screw
13. Affix the sample holder tube with the
allen screw.
cable fixing
14. Pass the sample thermocouple
connecting cable as shown in the figure
and connect the plug.
plug
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DIL 402 PC
Appendix
pushrod
15. Affix the pushrod on the displacement
device with the allen screw.
allen screw
Adjustment of the pushrod:
Height:
allen screws
•
Loosen the allen screws and you can
move the pushrod upwards and
downwards
Lateral position:
allen screws
•
Loosen the three allen screws and you
can change the lateral position of the
hinge and pushrod.
allen screw
hinge
Ideal position of the pushrod:
pushrod
sample support
sample
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DIL 402 PC
Appendix
furnace
16. Place the furnace on the set pins and fix
it with the allen screws.
furnace
allen screw
allen screw
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DIL 402 PC
Appendix
tube
17. Push the tube over the instrument.
tube
18. Affix the tube with the allen screws.
allen screws
adjusting screw
19. Place the adjusting screw.
20. Affix the adjusting screw by means of a
socket wrench.
socket wrench
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DIL 402 PC
Appendix
adjusting screw
21. Push in the knob.
knob
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11