m
be certain.
Series 651 Environmental Chambers
Product Information
Model 651.04
Model 651.05
Model 651.06
Model 651.10
015-200-501 F
Copyright information
Trademark information
© 2015 MTS Systems Corporation. All rights reserved.
MTS is a registered trademark of MTS Systems Corporation within the United
States. This trademark may be protected in other countries.
Eurotherm is a registered trademark of Eurotherm Controls Ltd.
Partlow is a registered trademark of Partlow Corporation.
Teflon is a registered trademark of Du Point Company.
Publication information
2
Manual Part Number
Publication Date
015-200-501 B
January 1999
015-200-501 C
September 1999
015-200-501 D
March 2008
015-200-501 E
December 2014
015-200-501 F
April 2015
Manual Template 4.3
Contents
Technical Support 5
How to Get Technical Support 5
Before You Contact MTS 5
If You Contact MTS by Phone 6
Problem Submittal Form in MTS Manuals 7
Preface 9
Before You Begin 9
Conventions 10
Documentation Conventions 10
Introduction 13
Safety 17
General Safety Practices: Environmental Components 17
Safety Practices: Environmental Chamber 22
Installation 25
Environmental Chamber Mobile Cart, Stand, and Legs 27
Install the Environmental Chamber 27
Connecting Liquid Nitrogen to the Chamber 30
Special Consideration for Acumen Installation 34
Parts List for Acumen Installation (refer to previous illustration) 38
Operation 39
Environmental Chamber 39
Operating Controls 39
Control Thermocouple Positioning 40
Specimen Removal Considerations 40
Temperature Controller 41
Series 651 Environmental Chamber
Contents
3
Maintenance 45
General Chamber Maintenance 45
General Control Cabinet Maintenance 45
Replacement Parts 46
Heating Elements 46
4
Contents
Series 651 Environmental Chamber
Technical Support
How to Get Technical Support
Start with your
manuals
The manuals supplied by MTS provide most of the information you need to use
and maintain your equipment. If your equipment includes MTS software, look
for online help and README files that contain additional product information.
If you cannot find answers to your technical questions from these sources, you
can use the internet, e-mail, telephone, or fax to contact MTS for assistance.
Technical support
methods
MTS web site
www.mts.com
MTS provides a full range of support services after your system is installed. If
you have any questions about a system or product, contact MTS in one of the
following ways.
The MTS web site gives you access to our technical support staff by means of a
Technical Support link:
www.mts.com > Contact Us > Service & Technical Support
E-mail
Telephone
techsupport@mts.com
MTS Call Center 800-328-2255
Weekdays 7:00 A.M. to 5:00 P.M., Central Time
Fax
952-937-4515
Please include “Technical Support” in the subject line.
Before You Contact MTS
MTS can help you more efficiently if you have the following information
available when you contact us for support.
Know your site
number and system
number
The site number contains your company number and identifies your equipment
type (material testing, simulation, and so forth). The number is usually written on
a label on your MTS equipment before the system leaves MTS. If you do not
have or do not know your MTS site number, contact your MTS sales engineer.
Example site number: 571167
When you have more than one MTS system, the system job number identifies
which system you are calling about. You can find your job number in the papers
sent to you when you ordered your system.
Example system number: US1.42460
Series 651 Environmental Chamber
5
Know information from
prior technical
assistance
Identify the problem
Know relevant
computer information
Know relevant
software information
If you have contacted MTS about this problem before, we can recall your file.
You will need to tell us the:
•
MTS notification number
•
Name of the person who helped you
Describe the problem you are experiencing and know the answers to the
following questions:
•
How long and how often has the problem been occurring?
•
Can you reproduce the problem?
•
Were any hardware or software changes made to the system before the
problem started?
•
What are the model numbers of the suspect equipment?
•
What model controller are you using (if applicable)?
•
What test configuration are you using?
If you are experiencing a computer problem, have the following information
available:
•
Manufacturer’s name and model number
•
Operating software type and service patch information
•
Amount of system memory
•
Amount of free space on the hard drive in which the application resides
•
Current status of hard-drive fragmentation
•
Connection status to a corporate network
For software application problems, have the following information available:
•
The software application’s name, version number, build number, and if
available, software patch number. This information is displayed briefly
when you launch the application, and can typically be found in the “About”
selection in the “Help” menu.
•
It is also helpful if the names of other non-MTS applications that are
running on your computer, such as anti-virus software, screen savers,
keyboard enhancers, print spoolers, and so forth are known and available.
If You Contact MTS by Phone
Your call will be registered by a Call Center agent if you are calling within the
United States or Canada. Before connecting you with a technical support
specialist, the agent will ask you for your site number, name, company, company
address, and the phone number where you can normally be reached.
If you are calling about an issue that has already been assigned a notification
number, please provide that number. You will be assigned a unique notification
number about any new issue.
6
Series 651 Environmental Chamber
Identify system type
Be prepared to
troubleshoot
Write down relevant
information
After you call
To assist the Call Center agent with connecting you to the most qualified
technical support specialist available, identify your system as one of the
following types:
•
Electromechanical materials test system
•
Hydromechanical materials test system
•
Vehicle test system
•
Vehicle component test system
•
Aero test system
Prepare yourself for troubleshooting while on the phone:
•
Call from a telephone when you are close to the system so that you can try
implementing suggestions made over the phone.
•
Have the original operating and application software media available.
•
If you are not familiar with all aspects of the equipment operation, have an
experienced user nearby to assist you.
Prepare yourself in case we need to call you back:
•
Remember to ask for the notification number.
•
Record the name of the person who helped you.
•
Write down any specific instructions to be followed, such as data recording
or performance monitoring.
MTS logs and tracks all calls to ensure that you receive assistance and that action
is taken regarding your problem or request. If you have questions about the status
of your problem or have additional information to report, please contact MTS
again and provide your original notification number.
Problem Submittal Form in MTS Manuals
Use the Problem Submittal Form to communicate problems you are experiencing
with your MTS software, hardware, manuals, or service which have not been
resolved to your satisfaction through the technical support process. This form
includes check boxes that allow you to indicate the urgency of your problem and
your expectation of an acceptable response time. We guarantee a timely
response—your feedback is important to us.
The Problem Submittal Form can be accessed:
•
In the back of many MTS manuals (postage paid form to be mailed to MTS)
•
www.mts.com > Contact Us > Problem Submittal Form (electronic form to
be e-mailed to MTS)
Series 651 Environmental Chamber
7
8
Series 651 Environmental Chamber
Preface
Before You Begin
Safety first!
Before you attempt to use your MTS product or system, read and understand any
safety information provided with your system. Improper installation, operation,
or maintenance of MTS equipment in your test facility can result in hazardous
conditions that can cause severe personal injury or death and damage to your
equipment and specimen. Again, read and understand the safety information
provided with your system before you continue. It is very important that you
remain aware of hazards that apply to your system.
Other MTS manuals
In addition to this manual, you might receive additional MTS manuals in paper or
electronic form.
If you have purchased a test system, it can include an MTS System
Documentation CD. This CD contains an electronic copy of the MTS manuals
that pertain to your test system, including hydraulic and mechanical component
manuals, assembly drawings and parts lists, and operation and preventive
maintenance manuals. Controller and application software manuals are typically
included on the software CD distribution disc(s).
Series 651 Environmental Chamber
9
Conventions
Conventions
Documentation Conventions
The following paragraphs describe some of the conventions that are used in your
MTS manuals.
Hazard conventions
As necessary, hazard notices are embedded in this manual. These notices contain
safety information that is specific to the task to be performed. Hazard notices
immediately precede the step or procedure that can lead to an associated hazard.
Read all hazard notices carefully and follow the directions that are given. Three
different levels of hazard notices can appear in your manuals. Following are
examples of all three levels.
Note
For general safety information, see the safety information provided with
your system.
DANGER
Danger notices indicate the presence of a hazard with a high level of risk which,
if ignored, will result in death, severe personal injury, or substantial property
damage.
WARNING
Warning notices indicate the presence of a hazard with a medium level of risk
which, if ignored, can result in death, severe personal injury, or substantial
property damage.
CAUTION
Caution notices indicate the presence of a hazard with a low level of risk which,
if ignored, could cause moderate or minor personal injury, equipment damage, or
endanger test integrity.
Notes
Notes provide additional information about operating your system or highlight
easily overlooked items. For example:
Note
Special terms
Illustrations
Electronic manual
conventions
10
Resources that are put back on the hardware lists show up at the end of
the list.
The first occurrence of special terms is shown in italics.
Illustrations appear in this manual to clarify text. It is important for you to be
aware that these illustrations are examples only and do not necessarily represent
your actual system configuration, test application, or software.
This manual is available as an electronic document in the Portable Document
File (PDF) format. It can be viewed on any computer that has Adobe Acrobat
Reader installed.
Series 651 Environmental Chamber
Conventions
Hypertext links
The electronic document has many hypertext links displayed in a blue font. All
blue words in the body text, along with all contents entries and index page
numbers, are hypertext links. When you click a hypertext link, the application
jumps to the corresponding topic.
Series 651 Environmental Chamber
11
Conventions
12
Series 651 Environmental Chamber
Introduction
This manual describes the Series 651 Environmental Chambers and how to work
with liquid nitrogen (LN2).
Make sure the chamber is installed in accordance with national electric and fire
protection codes. Do not exceed the electrical and temperature rating printed on
the chamber rating plate.
Important
Pay particular attention to regulations that are applicable to the
specific governing operations entities including, but not limited to
legislated and accredited national and local industry standards and
the type of facility in which the chamber will be employed, including
zoning requirements, local building codes, and local electrical
codes.
The MTS Series 651 Environmental Chambers let you test materials and
components within a range of temperatures; refer to the specifications table for
temperature ranges associated with the individual chambers. Cooling is
accomplished with the use of gases introduced to the chamber. Heating is
accomplished with two electrical heating elements. An electric fan and baffle
diffuse the heat for uniform temperatures. The temperature controller (Eurotherm
or Partlow) is mounted in the electrical box.
Electrical Box
Instrumentation
Port
Upper Access Hole
Window
Temperature
Controller
Lifting
Eyes
Door
Latch
Hinges
What you need to
know
Fan Motor
Lower Access Hole
Baffle
Fan
MTS Systems Corporation assumes that you know how to use your controller.
See the appropriate manual for information about performing any controllerrelated step in this manual’s procedures. You are expected to know how to
perform the following procedures.
•
Series 651 Environmental Chamber
Position the crosshead.
13
•
Install instrumentation.
•
Use your grips and fixtures.
•
Install a specimen.
•
Set up limit detectors.
•
Run a test.
Note
Clean any debris produced from testing away from the environmental
chamber. For example, carbon fibers can short the heater elements
which causes them to stop working.
WARNING
The environmental chamber is not rated for combustible liquids or gasses.
When heated, flammable and combustible liquids can explode and cause
personal injury, or equipment damage.
Documentation
•
Do not use flammable or combustible liquids in the environmental
chamber.
•
Always operate the chamber with the door closed.
•
Do not override any safety features.
•
Do not modify the chamber without consulting MTS Systems
Corporation.
The Series 651 Environmental Chambers include a temperature controller. Both
the environmental chamber and temperature controller have manuals provided by
their original manufacturers (along with this manual). The following
documentation should be included with the chamber:
•
The vendor’s product manual for the environmental chamber
•
The vendor’s product manual for the temperature controller
If you did not receive a temperature controller manual, contact the vendor:
Eurotherm
http://www.eurotherm.com/downloads/
West Corporation
http://www.west-cs.com/resources/
14
•
A schematic of the environmental chamber
•
A configuration drawing listing the original configuration of the
temperature controller
•
A dimensional drawing of the general layout of the environmental chamber
Series 651 Environmental Chamber
Chamber models
The following table lists the differences between the environmental chamber
models. Each environmental chamber can be used with any load unit but is
recommended for specific load units.
Model
Number
Temperature Range Interior
Dimensions*
Weight†
Load Unit‡
Cart Part Number§
651.04E-01
-129 to 200°C
(-200 to 400°F)
305 x 305 x 305 mm
(12 x 12 x 12 in)
86 kg
(190 lb)
331.05
042-478-002
651.05F-01
-150 to 350°C
(-238 to 662°F)
216 x 228 x 228 mm
(8.5 x 9 x 9 in)
82 kg
(180 lb)
Acumen
100-294-319#
100-297-346
651.05F-02
-150 to 350°C
(-238 to 662°F)
286 x 305 x 453 mm
(11.25 x 12 x 17.8 in)
114 kg
(250 lb)
Landmark**
Acumen
100-294-319#
100-297-346
Legs (optional)
651.06E-03
-129 to 315°C
(-200 to 600°F)
356 x 432 x 559 mm
(14 x 17 x 22 in)
146 kg
(320 lb)
Landmark††
100-160-646
100-213-156‡‡
651.06E-04
-129 to 315°C
(-200 to 600°F)
356 x 432 x 813 mm
(14 x 17 x 32 in)
191 kg
(420 lb)
Landmark††
100-160-646
100-213-156‡‡
651.10E-04
-129 to 540°C
(-200 to 1000°F)
356 x 432 x 660 mm
(14 x 17 x 26 in)
220 kg
(485 lb)
Landmark††
100-160-646
100-213-156‡‡
*
†
‡
§
#
**
††
‡‡
The dimensions are specified as width x depth x height.
The weights are approximate.
These are typical uses; some load units can accommodate any chamber.
Contact MTS for cart information specific to your configuration.
Cart stand for table top load units.
Landmark tabletop model.
Landmark floor-standing model.
For Landmark 370.50 Load Unit only.
Series 651 Environmental Chamber
15
16
Series 651 Environmental Chamber
General Safety Practices: Environmental Components
Safety
General Safety Practices: Environmental
Components
Environmental components such as a high temperature furnace or environmental
chamber and its associated temperature controller can be part of equipment used
in MTS testing systems. This section provides general information about safety
issues that pertain to systems that use environmental components. These issues
include statements to the intended use and foreseeable misuse of the system and
definition for the graphical hazard labeling that is affixed to your product, and
other (more general) safety information that relates to the high-pressure and highperformance characteristics of MTS servohydraulic and electromechanical
systems.
When you prepare to operate a system that includes environmental components,
ensure the following:
•
Do not use or allow personnel to operate the system who are not
experienced, trained, or educated in the inherent dangers associated with
high-performance servo hydraulics and who are not experienced, trained, or
educated with regard to the intended operation as it applies to this test
system.
•
Do not disable safety components or features (including limit detectors,
light curtains, or proximity switches/detectors).
•
Do not attempt to operate the system without appropriate personal safety
gear (for example, hearing, hand, and eye protection).
•
Do not modify the system or replace system components using parts that are
not MTS component parts or effect repairs using parts or components that
are not manufactured to MTS specifications.
•
Do not operate the grips or fixtures in an explosive atmosphere.
•
Do not use the system in a test area where uncontrolled access to the test
system is allowed when the system is in operation.
•
For servohydraulic systems, do not operate the system unless an interlock is
installed to monitor supply pressure into the HSM and initiate a system
interlock if a low or no pressure event occurs.
If you have system related responsibilities (that is, if you are an operator, service
engineer, or maintenance person), you should study safety information carefully
before you attempt to perform any test system procedure.
You should receive training on this system or a similar system to ensure a
thorough knowledge of your equipment and the safety issues that are associated
with its use. In addition, you should gain an understanding of system functions
Series 651 Environmental Chamber
17
General Safety Practices: Environmental Components
by studying the other manuals supplied with your test system. Contact MTS for
information about the content and dates of training classes that are offered.
It is very important that you study the following safety information to ensure that
your facility procedures and the system’s operating environment do not
contribute to or result in a hazardous situation. Remember, you cannot eliminate
all the hazards associated with this system, so you must learn and remain aware
of the hazards that apply to your system at all times. Use these safety guidelines
to help learn and identify hazards so that you can establish appropriate training
and operating procedures and acquire appropriate safety equipment (such as
gloves, goggles, and hearing protection).
Each test system operates within a unique environment which includes the
following known variables:
•
Facility variables (facility variables include the structure, atmosphere, and
utilities)
•
Unauthorized customer modifications to the equipment
•
Operator experience and specialization
•
Test specimens
Because of these variables (and the possibility of others), your system can
operate under unforeseen circumstances that can result in an operating
environment with unknown hazards.
Improper installation, operation, or maintenance of your system can result in
hazardous conditions that can cause death, personal injury, or damage to the
equipment or to the specimen. Common sense and a thorough knowledge of the
system’s operating capabilities can help to determine an appropriate and safe
approach to its operation.
Read all manuals
Study the contents of this manual and the other manuals provided with your
system before attempting to perform any system function for the first time.
Procedures that seem relatively simple or intuitively obvious can require a
complete understanding of system operation to avoid unsafe or dangerous
situations.
Locate and read
hazard placards/labels
Find, read, and follow the hazard placard instructions located on the equipment.
These placards are placed strategically on the equipment to call attention to areas
such as known crush points, electrical voltage, and high pressure hazards.
Specimen temperature
changes
During environmental testing, the specimen temperature can become hot enough
to cause burns. Wear personal protection equipment (gloves) when handling
specimens.
Know facility safe
procedures
Most facilities have internal procedures and rules regarding safe practices within
the facility. Be aware of these safe practices and incorporate them into your daily
operation of the system.
18
Series 651 Environmental Chamber
General Safety Practices: Environmental Components
Know controls
Before you operate the system for the first time, make a trial run through the
operating procedures with the power off. Locate all hardware and software
controls and know what their functions are and what adjustments they require. If
any control function or operating adjustment is not clear, review the applicable
information until you understand it thoroughly.
Have first aid available
Accidents can happen even when you are careful. Arrange your operator
schedules so that a properly trained person is always close by to render first aid.
In addition, ensure that local emergency contact information is posted clearly and
in sight of the system operator.
Be aware of
component movement
with hydraulics off
The actuator rod can also drift down when hydraulics are turned off hitting
anything in its path. This uncommanded movement is because of oil movement
between the pressure/return ports and oil blowby across the piston hub. Be aware
that this can happen and clear the area around the actuator rod when hydraulics
are turned off.
Know electrical
hazards
When the system electrical power is turned on, minimize the potential for
electrical shock hazards. Wear clothing and use tools that are properly insulated
for electrical work. Avoid contact with exposed wiring or switch contacts.
Whenever possible, turn off electrical power when you work on or in proximity
to any electrical system component. Observe the same precautions as those given
for any other high-voltage machinery.
Make sure that all electrical components are adequately grounded. Grounds must
remain connected and undisturbed at all times.
Keep bystanders
safely away
Wear proper clothing
Keep bystanders at a safe distance from all equipment. Never allow bystanders to
touch specimens or equipment while the test is running.
Do not wear neckties, shop aprons, loose clothing or jewelry, or long hair that
could get caught in equipment and result in an injury. Remove loose clothing or
jewelry and restrain long hair.
Remove flammable
fluids
Remove flammable fluids from their containers or from components before you
install the container or component. If desired, you can replace the flammable
fluid with a non-flammable fluid to maintain the proper proportion of weight and
balance.
Check bolt ratings and
torques
To ensure a reliable product, fasteners (such as bolts and tie rods) used in MTSmanufactured systems are torqued to specific requirements. If a fastener is
loosened or the configuration of a component within the system is modified, refer
to information in this product manual to determine the correct fastener, fastener
rating, and torque. Overtorquing or undertorquing a fastener can create a
hazardous situation due to the high forces and pressures present in MTS test
systems.
On rare occasions, a fastener can fail even when it is correctly installed. Failure
usually occurs during torquing, but it can occur several days later. Failure of a
fastener can result in a high velocity projectile. Therefore, it is a good practice to
avoid stationing personnel in line with or below assemblies that contain large or
long fasteners.
Series 651 Environmental Chamber
19
General Safety Practices: Environmental Components
Practice good
housekeeping
Keep the floors in the work area clean. Hydraulic fluid that is spilled on any type
of floor can result in a dangerous, slippery surface. Do not leave tools, fixtures,
or other items not specific to the test, lying about on the floor, system, or decking.
Do not exceed the
Maximum Supply
Pressure
For hydraulic grips and fixtures. make sure that the hydraulic supply pressure is
limited to the maximum pressure defined by the grip or fixture identification (ID)
tag.
Do not disable safety
devices
Your system can have active or passive safety devices installed to prevent system
operation if the device indicates an unsafe condition. Do not disable such devices
as it can result in unexpected system motion.
Provide adequate
lighting
Ensure adequate lighting to minimize the chance of operation errors, equipment
damage, and personal injury. You need to see what you are doing.
Provide means to
access out-of-reach
components
Make sure you can access system components that might be out of reach while
standing on the floor. For example, ladders or scaffolding might be required to
reach load cell connectors on tall load units.
Wear appropriate
personal protection
Wear eye protection when you work with high-pressure hydraulic fluid,
breakable specimens, or when anything characteristic to the specimen could
break apart.
Wear ear protection when you work near electric motors, pumps, or other devices
that generate high noise levels. Some systems can create sound pressure levels
that exceed 70 dbA during operation.
Wear appropriate personal protection equipment (gloves, boots, suits, respirators)
whenever you work with fluids, chemicals, or powders that can irritate or harm
the skin, respiratory system, or eyes.
Handle chemicals
safely
Whenever you use or handle chemicals (for example, cleaning fluids, hydraulic
fluid, batteries, contaminated parts, electrical fluids, and maintenance waste),
refer to the appropriate manufacturer’s safety data sheets for that material and
determine the appropriate measures and equipment required to handle and use the
chemical safely. Ensure that the chemical is disposed of appropriately.
Know system
interlocks
Interlock devices should always be used and properly adjusted. Interlock devices
are designed to minimize the chance of accidental damage to the test specimen or
the equipment. Test all interlock devices for proper operation immediately before
a test. Do not disable or bypass any interlock devices as doing so could allow
hydraulic pressure to be applied regardless of the true interlock condition. The
Reset/Override button is a software function that can be used to temporarily
override an interlock while attempting to gain control of the system.
Know system limits
Never rely on system limits such as mechanical limits or software limits to
protect you or any personnel. System limits are designed to minimize the chance
of accidental damage to test specimens or to equipment. Test all limits for proper
operation immediately before a test. Always use these limits and adjust them
properly.
Do not disturb sensors
20
Do not bump, wiggle, adjust, disconnect, or otherwise disturb a sensor (such as
an accelerometer or extensometer) or its connecting cable when hydraulic
pressure is applied.
Series 651 Environmental Chamber
General Safety Practices: Environmental Components
Ensure secure cables
Do not change any cable connections when electrical power or hydraulic pressure
is applied. If you attempt to change a cable connection while the system is in
operation, an open control loop condition can result. An open control loop
condition can cause a rapid, unexpected system response which can result in
severe personal injury, death, or damage to equipment. Also, ensure that all
cables are connected after you make any changes in the system configuration.
Stay alert
Avoid long periods of work without adequate rest. In addition, avoid long periods
of repetitious, unvarying, or monotonous work because these conditions can
contribute to accidents and hazardous situations. If you are too familiar with the
work environment, it is easy to overlook potential hazards that exist in that
environment.
Contain small leaks
Do not use your fingers or hands to stop small leaks in hydraulic or pneumatic
hoses. Substantial pressures can build up, especially if the hole is small. These
high pressures can cause the oil or gas to penetrate your skin, causing painful and
dangerously infected wounds. Turn off the hydraulic supply and allow the
hydraulic pressure to dissipate before you remove and replace the hose or any
pressurized component.
Stay clear of moving
equipment/avoid crush
points
Stay clear of mechanical linkages, connecting cables, and hoses that move
because you can get pinched, crushed, tangled, or dragged along with the
equipment. High forces generated by the system can pinch, cut, or crush anything
in the path of the equipment and cause serious injury. Stay clear of any potential
crush points. Most test systems can produce sudden, high-force motion. Never
assume that your reactions are fast enough to allow you to escape injury when a
system fails.
Know the causes of
unexpected actuator
motions
The high force and velocity capabilities of MTS actuators can be destructive and
dangerous (especially if actuator motion is unexpected). The most likely causes
of unexpected actuator response are operator error and equipment failure due to
damage or abuse (such as broken, cut, or crushed cables and hoses; shorted wires;
overstressed feedback devices; and damaged components within the servocontrol
loop). Eliminate any condition that could cause unexpected actuator motion.
Know compressed gas
hazards
Some environmental chambers use liquid nitrogen or some inert gas to achieve a
required test atmosphere. Typically these gasses are supplied in pressurized
tanks. Observe the following safety practices when you work with high-pressure
air or gas:
•
Always follow the recommended bleeding procedures before you remove or
disassemble components that contain pressurized gas. When you bleed a gas
or remove a fitting, hose, or component that contains a gas, remember that
many gases cannot support life. Therefore, as the ratio of released gas to
oxygen increases, so does the potential for suffocation.
•
Wear appropriate safety devices to protect your hearing. Escaping air or gas
can create a noise level that can damage your hearing.
•
Ensure that all pressurized air or gas is bled out of the device before you
start to disassemble or open it. A thorough understanding of the device and
its pressurized area is necessary before you undertake any maintenance.
Refer to the appropriate product information for the correct bleeding
procedure.
Series 651 Environmental Chamber
21
Safety Practices: Environmental Chamber
Consult MTS when in doubt about the safety or reliability of any system-related
procedure or modification that involves devices that contain any type of
compressed gas.
Liquid Nitrogen
considerations
Outside chamber
temperature
considerations
Use of LN2 gas in the chamber will result in a lack of oxygen in and around the
chamber. A lack of oxygen can cause dizziness or blackouts.
•
Review lab safety procedures and review any safety data furnished by the
LN2 supplier.
•
Ensure that the area around the chamber is well ventilated.
•
Ensure that the vent line is large enough. Do not put the outlet end of the
vent line near a fresh air intake for the building.
•
Use the circulator fan to replace the atmosphere in the chamber with room
air before opening the chamber after a test.
•
Consult the manufacturer’s safety data sheets and your local codes for
additional venting and monitoring requirements.
Be aware that the outside chamber temperature and get extremely cold or hot
depending on the environment used for testing. The outside of the chamber can
get to temperatures that can cause personal injury. Wear appropriate protective
clothing. It is recommended to allow the outside chamber temperature to return
close to room temperature before touching the chamber.
Safety Practices: Environmental Chamber
The potential for electric shock is always present when electrically operated
equipment is in use. The following suggestions are recommended for your
protection:
1. Before beginning service/maintenance procedures on your chamber, the
power source must be locked out and tagged out per Occupational Safety
and Health Administration (OSHA) regulations.
2. Insure the chamber is properly grounded and electrically protected.
Grounding lugs and ground wires have been installed prior to shipment. The
ground wire will terminate within the external terminal box and is visible to
the installer/operator. If unsure of the grounding status of the equipment,
consult the NEC (National Electric Code) or a licensed professional.
If this equipment is used in a manner other than described in this manual,
protection provided by the equipment can be compromised or impaired. To
preclude hazard and minimize risk, follow all instructions and operate within the
design limits noted on the rating plate.
Do not use components or materials not specifically designed for this equipment.
Failure to comply with this precaution could result in damage to the equipment
used or the chamber and can create an overheat situation. Also, do not use
anything other than OEM exact replacement parts. Not using OEM replacement
parts could cause faulty instrumentation readings, inoperative equipment, or a
temperature overshoot.
22
Series 651 Environmental Chamber
Safety Practices: Environmental Chamber
Avoid combustible product which generate toxic or hazardous vapor or fumes.
Work should be done in a properly vented environment.
Observe the following precautions:
•
Never stand in front of an open hot chamber.
•
Wear protective eye wear.
•
Wear protective gloves.
Do not use combustible gases directly in this chamber. Process gasses must
always be contained in a separate tube.
Modification of equipment for use other than that for which it is explicitly
designed for could cause severe injury or death. Any customer after market
retrofit violates the warranty.
Do not modify or disconnect any safety features provided. Disconnection of the
units safety features could allow the unit to become overheated and start on fire,
causing personal injury or death, product and property damage.
Periodically disconnect power from the equipment and allow it to cool
completely. Once cool, inspect for loose or broken heaters and for worn wire
coils on the inside of the heated chamber. Heaters might have to be replaced if
damage is severe. Avoid contact with any exposed heater coils / elements. Do not
touch elements with bare hands or oily gloves. Contact MTS. if unsure of the
safety of the heating elements in the conditions you have observed.
Only qualified electrical professionals should remove the upper and lower
terminal covers of the terminal boxes. Keep all guards (guide-tabs, backstops,
upper and lower terminal covers) provided with the equipment in place while the
chamber is in operation. Observe all safety labels.
Series 651 Environmental Chamber
23
Safety Practices: Environmental Chamber
24
Series 651 Environmental Chamber
Installation
Environmental chambers are installed in load units using a mobile cart, cart
stand, or legs designed for the chamber. The chamber is installed from the rear of
the load unit.
Most of the environmental chambers have U-plugs. Removable sections (Uplugs) in the top and bottom walls of the chamber allow the cart-mounted
chamber to be placed in position around the pullrods with the specimen and grips
installed. Each U-plug consists of two pieces, one stationary and the other
removable. The front piece is removed to install the environmental chamber after
the specimen and all of its instrumentation are installed in the load unit. When the
specimen is ready to be tested, the U-plugs are replaced.
Note
Series 651 Environmental Chamber
The Model 651.05-01 and Model 651.05-02 Environmental Chambers
have no U-plugs. These units must be installed before the grips and
specimen are installed.
25
Component Identification
26
Item
Description
1
Load Unit Crosshead
2
Force Transduce
3
Extension Rod
4
Load Unit Column
5
Upper Grip
6
Environmental Chamber
7
Lower Grip
8
Extension Rod
9
Chamber Cart
10
Hydraulic Actuator Rod
11
Load Unit Baseplate
12
25.4 mm (1in) minimum
Series 651 Environmental Chamber
Environmental Chamber Mobile Cart, Stand, and Legs
The environmental chamber is typically installed into an MTS load unit. A
mobile cart, cart stand, or legs provide a stable, easy-to-move platform for the
environmental chamber and allows the chamber to be quickly and easily installed
into, or removed from, a load unit.
The mobile cart has casters to move the cart and adjustable feet to stabilize the
cart when the environmental chamber is stationary. It also has a hand-operated
lever for raising and lowering the chamber.
The cart stand is similar to the mobile cart but without casters and is typically
used with tabletop load units; for example the MTS Acumen electrodynamic test
system. The cart stand is usually placed into the testing position and the chamber
moved onto the cart stand using an overhead lifting device.
Legs attached to the chamber are used in tabletop load unit configurations where
obstructions prevent use of the cart stand. The chamber height is adjusted by
inserting pins in various holes in the legs.
1
2
3
Item
Configuration
1
Mobile cart. Typically used for floor
standard Landmark load units.
2
Cart stand. Typically used for Acumen
or tabletop Landmark load units
3
Legs (shown mounted to chamber). An
alternate for the cart stand for tabletop
Landmark load units.
Install the Environmental Chamber
The following procedure applies to installation of the chamber into a load unit
using the mobile cart. If the installation is using the cart stand or legs, the
procedure would be similar except where noted.
To install the environmental chamber onto an MTS load unit:
Series 651 Environmental Chamber
27
1. If you have an environmental chamber with U-plugs, you can install the
grips and specimen before installing the chamber. See your grip manual.
2. Set the environmental chamber onto the mobile cart.
3. Arrange the cables and hoses so that they do not interfere with cart
movement.
WARNING
When moving the chamber and cart assembly it is possible to damage
cables or hoses.
Damage to the cables or hoses can cause unpredictable system operation
which can result in personal injury or equipment damage.
Do not allow the casters to run over cables or hoses when positioning the cart.
Note
The protruding hardware on some environmental chambers and the
limited clearance between the columns of some load units require the
chamber door to be removed to pass the chamber between the load unit
columns. Chamber doors have “lift-off” hinges.
4. If present, remove the U-plug assemblies from the chamber.
5. Use the hand-operated lever to adjust the height of the chamber so that the
cart’s lift arms are slightly higher than the top surface of the load unit’s
baseplate.
6. Move the cart into position so that the actuator’s piston rod is centered with
respect to the access ports of the chamber.
Note
For chambers configured with legs, adjust the height of the legs based
on the load unit configuration. For chambers using the cart stand,
position the cart stand into the load unit in the final testing position.
7. If you have an environmental chamber without U-plugs (Models 651.04 and
651.05), install the grips now. See your grip manual. after the chamber is in
position, the grip/pull rod assemblies will be inserted through the chamber
openings for final installation.
CAUTION
Do not change the position of the chamber after the crosshead has been
adjusted and the displacement limits have been set.
Damage to the chamber or fixtures can result.
After the environmental chamber is installed, see your test controller and grip
manuals for information about installing a specimen.
8. Install the specimen.
9. If desired, install extensometers,
28
Series 651 Environmental Chamber
10. Thermocouple wiring, and any other specimen instrumentation on the
specimen at this time.
11. Push the chamber into position.
Note
For chambers configured with legs, use an overhead lifting device and
move the chamber into position. For chambers using the cart stand, use
an overhead lifting device and move the chamber onto the cart stand.
12. Reinstall the U-plugs in the chamber removed in Step 4.
13. Route cables and wires for the thermocouple, extensometers, and so forth
out through the small access ports provided in the walls of the chamber, and
then plug the ports with insulation or port plugs.
14. Pack mineral insulation (MTS part number 011-335-202) around the grip
extension rods in the access ports.
Note
Optional inserts are available from MTS Systems Corporation. They can
also be custom made. Teflon can be used for applications up to 204° C
(400° F). Machinable ceramics are used for higher temperatures.
Item
Description
1
Actuator piston
2
Stud
3
Flange adapter (flat end)
4
Flange clamp
Series 651 Environmental Chamber
29
Item
Description
5
Extension rod
6
Environmental chamber - top
7
Insulation
8
Upper insert (optional)
9
Grips, plates, or other specimen fixture
10
Lower insert (optional)
11
Environmental chamber - bottom
12
Load cell
Connecting Liquid Nitrogen to the Chamber
Prerequisites
30
•
Review lab safety procedures and review any safety data furnished by the
LN2 supplier.
•
Ensure that the area around the chamber is well ventilated.
•
Ensure that the vent line is large enough. Do not put the outlet end of the
vent line near a fresh air intake for the building.
•
Use the circulator fan to replace the atmosphere in the chamber with room
air before opening the chamber after a test.
Series 651 Environmental Chamber
WARNING
The environmental chamber is not rated for combustible liquids or gasses.
When heated, flammable and combustible liquids can explode and cause
personal injury and equipment damage.
•
Do not use flammable or combustible liquids in the environmental
chamber.
•
Always operate the chamber with the door closed.
•
Do not override any safety features.
•
Do not modify the chamber without consulting MTS Systems
Corporation.
Male, 1/2 inch,
45° Flare
Connector
To connect an LN2 supply tank to the chamber:
1. Connect a supply of clean, water-free liquid nitrogen to the coolant input
connector.
The cooling gas supply tank should be pressurized to 0.15 MPa
(22 psi) for LN2 cooling. If the supply tank pressure is greater than the
recommended pressure, install a pressure regulator between the supply tank
and the coolant solenoid.
WARNING
Use of LN2 gas in the chamber will result in a lack of oxygen in and around
the chamber.
A lack of oxygen can cause dizziness or blackouts.
Ensure that the area around the chamber is well ventilated.
Series 651 Environmental Chamber
31
2. Connect a coolant gas exhaust line to the vent on the rear of the chamber to
carry exhausted cooling gases away from the test site. The exhaust line must
have an inside diameter at least as great as the diameter of the vent, and
should be as short as possible, with as few bends as possible to prevent back
pressure in the chamber.
3. Turn the liquid withdrawal valve on the supply tank on before beginning a
test.
Note
When cooling is not being used, the liquid withdrawal valve on the supply
tank should be kept closed to prevent leakage of the coolant.
WARNING
Check the operating temperature range of each component in the
environmental chamber. All components must be able to operate at the
temperature of the test.
Damage to equipment can occur.
Do not set a testing temperature that is higher or lower than the temperature
rating of any component (grips, fixtures, and so forth.) inside the chamber.
Setting the testing
temperature
Set the desired chamber temperature or temperature range with the temperature
controller. See the temperature controller manual.
Note
Do not set a testing temperature colder than the design operating range
(see specifications). Loss of temperature control to the chamber will
cause nitrogen “snow” to fill the chamber, invalidating test results.
Do not set a testing temperature higher than the design operating range
(see specifications). If the temperature in the chamber exceeds the
design operating range by approximately 28°C (50°F), the high
temperature limit switch will disconnect power from the heater elements.
32
Series 651 Environmental Chamber
Venting the LN2
after use
After using LN2 cooling, complete the following steps to prevent coolant from
becoming trapped in the line between the supply tank gas valve and the coolant
solenoid valve.
This procedure must be performed after each test if another test will not be
started within a few minutes.
CAUTION
Do not leave LN2 coolant in the line after use.
LN2 left in the line could rupture the line or damage the solenoid when the
liquid warms up and expands.
Always bleed off any LN2 that can remain in the supply line after testing.
1. When testing is completed, close the liquid withdrawal valve on the supply
tank.
2. Use the controls on the temperature controller to open the solenoid valve.
This allows the coolant in the line to bleed off into the chamber.
Series 651 Environmental Chamber
33
Special Consideration for Acumen Installation
Special Consideration for Acumen Installation
34
Series 651 Environmental Chamber
Special Consideration for Acumen Installation
Series 651 Environmental Chamber
35
Special Consideration for Acumen Installation
36
Series 651 Environmental Chamber
Special Consideration for Acumen Installation
Series 651 Environmental Chamber
37
Special Consideration for Acumen Installation
Parts List for Acumen Installation (refer to previous illustration)
38
Series 651 Environmental Chamber
Environmental Chamber
Operation
Environmental Chamber
Operating Controls
1. The main circuit breaker is located at the rear of the control cabinet. When
the circuit breaker is in the off position, all power is removed from the
chamber. The control cabinet should not be positioned such that it is difficult
to operate the disconnecting device.
2. The control power switch is located on the front of the control cabinet. This
switch must be in the on position for the chamber to operate.
3. If the optional light is included, the light switch is located on the front of the
control cabinet and is used to control the interior light.
4. The reset switch is located on the front of the control cabinet. It is used to
reset the high limit controller should the chamber temperature exceed the
limit setting.
5. The high limit controller is located on the front of the control cabinet and is
used to protect the chamber from excess temperature. The high limit backs
up the main temperature controller. If the set point is exceeded, an alarm
message will be flashed on the display. After the temperature has returned to
normal, push the reset switch.
Series 651 Environmental Chamber
39
Environmental Chamber
Control Thermocouple Positioning
The final position of the control thermocouple is determined by your
requirements. This can be determined by a trial and error process. It is
recommended to have an additional thermocouple and recorder for the test. A
flexible thermocouple has been provided for the control sensor.
1. Position the monitoring thermocouple on the specimen or in the air near the
specimen. Thermocouple response time is dependent on the location and
load.
2. Position the control thermocouple in the air exhaust, mark this location A.
This will provide the slowest response in the system and the specimen may
never see the control temperature. This initial test will ensure that the
exhaust temperature will never be above the maximum for the chamber.
3. If the specimen does not reach operating temperature, save the information.
Now reposition the control thermocouple between the exhaust and inlet,
mark this location B.
4. Conduct the test again and compare the results with the first run. If the
specimen reached temperature and the tuning for the controller is
satisfactory, you may either stop or reposition the thermocouple at another
location of your choice to see if any further improvement can be made.
You might have to repeat the test several times before the results meet your
specifications. It is difficult to position the control thermocouple at the factory
due to the limited information on the exact load being used.
Specimen Removal Considerations
To remove a specimen from the environmental chamber following a test:
WARNING
The chamber interior and the specimen can be very hot or very cold
following a test.
Working in the chamber before it has returned to room temperature can
cause burns or freezing injuries.
Take precautions to avoid touching hot or cold surfaces with bare skin. Use
appropriate tools and personal protection equipment. Consult your lab’s safety
guidelines and procedures.
1. Stop the test and turn the chamber switch off.
2. Open the chamber door. Allow the specimen to return to room temperature,
if possible.
3. Remove the specimen from the grips following the instructions in the
appropriate grip manual.
40
Series 651 Environmental Chamber
Temperature Controller
Temperature Controller
Temperature control of the chamber is via a Eurotherm controller. The controller
is typically set up for proper operation and no customer interaction is required.
The following is provided as an overview for reference. Refer to the Eurotherm
manual for detailed operation.
Item
Description
1
Output 1
2
Output 2
3
Upper readout
4
Lower readout
5
Remote setpoint/comms (flashing)
6
Program running
7
Run/Hold
8
Program in Hold
9
Up button
10
Down button
11
Scroll button
12
Page button
Series 651 Environmental Chamber
41
Temperature Controller
Item
Description
13
manual mode
14
Auto/Run button
15
Auto mode
16
Setpoint 2
Button or
Indicator
Name
Explanation
OP1
Output 1
When lit, indicated that the output installed in
module position 1 is on. This is normally the heating
output on the temperature controller.
OP2
Output 2
When lit, indicated that the output installed in
module position 2 is on. This is normally the
cooling output on the temperature controller.
SP2
Setpoint 2
When lit, this indicated the Setpoint 2 (or a setpoint
3-16) has been selected
REM
Remote setpoint
When lit, this indicates that a remote setpoint input
has been selected. REM will also flash when
communication is active.
Auto/Manual
button
When pressed, this toggles between automatic and
manual mode.
•
If the controller is in automatic mode, the
AUTO indicator is lit.
•
If the controller is in the manual mode, the
MAN indicator is lit.
The Auto/Manual button can be disabled in the
configuration level.
Run/Hold button
•
Press once to start a program (RUN indicator
lit).
•
Press again to hold a program (HOLD indicator
lit).
•
Press again to cancel hold and continue running
the program (RUN and HOLD indicators off.
The RUN indicator flashes at the end of a program.
The HOLD indicator flashes during holdback or
when a PDS retransmission output is open circuit.
Page button
42
Press to select a new list of parameters.
Series 651 Environmental Chamber
Temperature Controller
Button or
Indicator
Name
Explanation
Scroll button
Press to select a new parameter list.
Down button
Press to decrease a value in the lower readout.
Up button
Press to increase a value in the lower readout.
Series 651 Environmental Chamber
43
Temperature Controller
44
Series 651 Environmental Chamber
General Chamber Maintenance
Maintenance
Maintenance should only be performed by trained personnel.
WARNING
Prior to performing maintenance to the chamber or the controls, the main
power must be disconnected.
Failure to disconnect main power can cause electrical shock resulting in
injury or death.
Ensure main power is disconnected before performing maintenance.
General Chamber Maintenance
1. Inspect and verify all electrical connections for tightness. Due to thermal
expansion during the heat- up/cool-down cycles electrical connection can
become loosened.
2. Inspect the heating elements. Do not allow build up of foreign material on
the element. Oil should be cleaned off of any part of the chamber prior to
heating. Use caution not to displace the heating elements as the wire can be
brittle and break easily.
3. If chamber has a door, verify that the door safety switch is operating and
cutting the power to the heaters once the door is opened.
4. If your chamber is equipped with a blower motor, or has moving parts,
lubricate grease fittings as required.
5. Check all hardware fasteners to ensure that they are tight.
6. Inspect the tip of the thermocouple for excessive heat deterioration.
General Control Cabinet Maintenance
1. Verify that all electrical connections are tight.
2. If applicable, clean the cabinet cooling fan filter.
3. Check all cabinet to chamber interconnection wiring.
4. If applicable, check to ensure that all signal lamps light.
Series 651 Environmental Chamber
45
Replacement Parts
Replacement Parts
It is recommended that you obtain replacement parts from MTS to insure
that system safeguards are not compromised. Variations in component
specifications could cause the equipment to be unsafe.
Heating Elements
The elements should last more than three (3) years unless overheated due to
restricted air flow or a malfunction of the control system. No other maintenance
is required.
46
Series 651 Environmental Chamber
m
MTS Systems Corporation
14000 Technology Drive
Eden Prairie, Minnesota 55344-2290 USA
Toll Free Phone: 800-328-2255
(within the U.S. or Canada)
Phone: 952-937-4000
(outside the U.S. or Canada)
Fax: 952-937-4515
E-mail: info@mts.com
Internet: www.mts.com
ISO 9001 Certified QMS