Triaxial Cell Product Information Models 656.04, 656.05, and 656.06 015-025-501 B be certain.
© 2014MTS Systems Corporation. All rights reserved. Original Instructions (English): 015-025-501 B—January 2014 Trademark Information MTS, be certain., Bionix, ElastomerExpress, FlatTrac, FlexTest, Just In Case, LevelPlus, MTS Criterion, MTS EM Extend, MTS Insight, MTS Landmark, RPC, ServoSensor, SWIFT, Temposonics, TestWare, TestWorks are registered trademarks of MTS Systems Corporation within the United States.
Table of Contents Table of Contents Technical Support How to Get Technical Support.........................................................................................................................5 Before You Contact MTS.................................................................................................................................5 If You Contact MTS by Phone.........................................................................................................................
Table of Contents Install the Spherical Platen.....................................................................................................69 Plug the Ports.........................................................................................................................70 Changing to an Extension-Pore Pressure Test Setup..........................................................................72 Raise and Lock the Bell...........................................................................
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 software, look for online help and README files that contain additional product information. Technical support methods MTS provides a full range of support services after your system is installed. If you have any questions about a system or product, contact Technical Support in one of the following ways.
Technical Support When you have more than one MTS system, the system job number identifies your system. You can find your job number in your order paperwork. Example system number: US1.
Technical Support — Messaging applications If You Contact MTS by Phone A Call Center agent registers your call before connecting you with a technical support specialist. The agent asks you for your: • Site number • Name • Company name • Company address • Phone number where you can be reached If your issue has a notification number, please provide that number. A new issue will be assigned a unique notification number.
Technical Support • Write down any specific instructions. After you call MTS logs and tracks all calls to ensure that you receive assistance for your problem or request. If you have questions about the status of your problem or have additional information to report, please contact Technical Support again and provide your original notification number.
Preface Before You Begin Safety first! Before you use your MTS product or system, read and understand the safety information provided with your system. Improper installation, operation, or maintenance can result in hazardous conditions that can cause severe personal injury or death, or 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.
Preface 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 or equipment damage, or could endanger test integrity.
Preface Electronic manual conventions 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. 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.
Safety Topics: • • • • • General Safety Practices...................................................................................................................14 Safety Practices Before Operating the System.................................................................................14 Safety Practices While Operating the System ..................................................................................19 Hazard Labels..........................................................................
Safety General Safety Practices If you have system related responsibilities (that is, if you are an operator, service engineer, or maintenance person), you should study this manual 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.
Safety 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 lockout/tagout points Know where the lockout/tagout point is for each of the supply energies associated with your system.
Safety 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.
Safety • 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 a pneumatic or gas-charged device before you start to disassemble it. A thorough understanding of the assembly and its pressurized areas is necessary before you undertake any maintenance. Refer to the appropriate product information for the correct bleeding procedure.
Safety (see the System Documentation CD). Particles present in the hydraulic fluid can cause erratic or poor system response. Protect accumulators from moving objects For systems equipped with accumulators, protect accumulators with supports or guards. Do not strike accumulators with moving objects. This could cause the accumulator(s) to separate from the manifold resulting in equipment damage and personal injury.
Safety Safety Practices While Operating the System Wear appropriate personal protection Wear eye protection when you work with high-pressure hydraulic fluid, high-pressure air pressure, 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. This system may create sound pressure levels that exceed 70 dbA during operation.
Safety Do not disturb sensors 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. Ensure secure cables Ensure that all cable connections (electrical supply, control, feedback, sensor, communications, and so forth) are either locking type, or are secured, to ensure that they cannot be disconnected by a simple act.
Safety Hazard Labels Icon Description Failure to follow operating instructions can cause death or serious injury. Read and understand the operator’s manual before using this machine. Extreme heat hazard. Wear personal protective equipment when working in hot areas or with hot objects. For example, gloves. Part Number: 572300-23 Hand crush or pinch point hazard. Stay alert and be aware of possible moving parts. It is recommended to keep clear of areas noted with this icon.
Safety Icon Description High pressure fluid can penetrate skin. Do not tamper with fittings or hoses. Wear appropriate protection such as safety goggles and gloves. Maintain safe pressure levels. Part Number: 572300-45 Crunch Zones and Pinch Points Be aware of crush and pinch points on your system and keep personnel and equipment clear of these areas during system operation. Pay attention to all hazard labels on the system.
Introduction Topics: • • • Introduction........................................................................................................................................24 Description.........................................................................................................................................24 Triaxial Cell Specifications.................................................................................................................
Introduction Introduction About Series 656 Triaxial Cells This manual documents the Model 656.04, Model 656.05, and Model 656.06 Triaxial Cells. The Series 656 Triaxial Cells can be configured to perform compression, extension, and pore pressure tests on geologic specimens. These Triaxial Cells install in an MTS Series 315 Load Unit. The Series 315 Load Unit applies high axial loads—up to 1000 kip (4600 kN) to the specimen.
Introduction The Lexan® door helps protect you against flying fragments. The interlock will interrupt the test controller program any time the door is opened. Optional external heater bands let you raise the temperature of the Triaxial Cell. The carriage and track allow the entire Triaxial Cell, once disconnected from the Load Unit, to be rolled out of the test area. This frees the Load Unit to run other kinds of tests.
Introduction Item Description 6 Emergency Stop (E-Stop) 7 Platen Assembly 8 Sealing Cap Screws 9 Bell 10 Lexan Door 11 Mounting Plate 12 Spacer and Baseplate 13 Rails 14 Lexan Door Latches 26 | Triaxial Cell Product Information
Introduction Triaxial Cell—Major Parts Item Description 1 Crosshead 2 Crosshead Mounting Plate 3 Reaction Column 4 Seals 5 Upper Confining Fluid Port 6 Pressure Relief Valve 7 Sealing Cap Screw Triaxial Cell Product Information | 27
Introduction Item Description 8 Special Use Ports 9 Lower Confining Fluid Port 10 Insulation/Spacer Plate 11 Actuator Piston 12 Heating Rods 13 Lower Vent 14 Pore Pressure Ports 15 High Pressure Seal 16 Platen Assembly 17 Bell 18 Force Transducer 19 Reaction Column Seal 20 Upper Vent Eight sealing cap screws attach the bell to the platen assembly to make a sealed pressure chamber for the specimen. Confining fluid enters the chamber through the lower confining fluid port.
Introduction Platen Assembly—Major Parts Item Description 1 BNC Connector Panel 2 Confining Fluid Port 3 Electrical Feedthroughs 4 Platen Assembly—Top View 5 Connector Panel—Front View 6 Pore Pressure /LN2 Ports 7 Vent Port Triaxial Cell Product Information | 29
Introduction Ready to Run a Compression Test Item Description 1 Upper Confining Fluid Port 2 Plugged Port 3 Specimen and Extensomters 4 Special Use Ports 5 Lower Confining Fluid Port 6 Lower Vent 7 Pore Pressure Ports 8 Cable Feedthrough 9 End Cap 30 | Triaxial Cell Product Information
Introduction Item Description 10 Spherical Platen 11 Platen Seal 12 Upper Vent To run this test, some ports closed during pore pressure or extension tests are now open and others closed. The spherical platen compensates for specimens whose ends are not parallel. The solid end caps come in several sizes for different sized specimens.
Introduction Item Description 4 Specimen and Extensometers 5 End Cap Seal 6 Special Use Ports 7 Lower Confining Fluid Port 8 Lower Vent 9 Pore Pressure Ports 10 Cable Feedthrough 11 Plugged Port 12 Upper Vent To run this test, ports plugged during a compression test are now opened and others closed. The spherical platen is not used. The end caps come in several sizes for different sized specimens.
Introduction Specification Model 656.04 Model 656.05 Model 656.
Operation Topics: • • • • Operation...........................................................................................................................................36 Moving and Mounting the Bell...........................................................................................................36 Performing Tests................................................................................................................................
Operation Operation This chapter describes how to set up and run tests on your Triaxial Cell. Performing Tests details how to run tests on the Triaxial Cell. It covers building and installing the specimen, pressurizing the Cell, and removing the specimen after depressurizing the Cell. Changing Between Compression and Extension/Pore Pressure Test Setups details what must be done to switch between a setup ready to run a compression test to one ready to run an extension/pore pressure test.
Operation Item Description 2 Loosen the cap screws so the bell is no longer firmly attached. 3 Push the bell forward on the rails into the load frame. 4 Hand-tighten the cap screws. 5 Raise the actuator to lift the bell. 6 Attach the bell to the top mounting bracket. Performing Tests Performing a test involves five major tasks: 1. 2. 3. 4. 5.
Operation Item Description 1 Top 2 Upper End Cap 3 Specimen 4 Jacket 5 Guide Rod 6 Lower End Cap 7 Base 8 Assembled Height: 11 in (280 mm) 2. Before shrinking the jacket and wiring the specimen, make sure the end caps’ ports and cap screw holes align. Align the Endcaps—Assembly Fixture Top View Item Description 1 Align Holes 2 Align Ports 3. Shrink wrap and wire the specimen in the usual way.
Operation Prepare the Specimen for Compression Tests 1. Assemble your specimen. The spherical platen needs a 1.5 in. (38 mm) upper end cap to work correctly. Use a lower end cap that will give you a total assembled height of 11 in. (280 mm). Assemble the Specimen Item Description 1 1.5 in (38 mm) 2 Assembled Height: 11 in. (280 mm) 3 Lower End Cap 4 Jacket 5 Specimen 6 Upper End Cap 2. Shrink wrap and wire the specimen in the usual way. 3. Install the extensometer assembly on the specimen.
Operation Install the Extensometer Assembly Raise and Lock the Bell Note: Skip this section if the bell is up, locked in place, and you've turned load unit hydraulic pressure off. Warning: Opening a Triaxial Cell that still has pressure could spray you with debris and confining fluid. You could be hurt and your Triaxial Cell damaged. Before opening the Triaxial Cell, make sure the Pressure Intensifier’s Confining Fluid Output valve is Open.
Operation Important: Don’t let them dangle from the bell — they can damage the threads in the platen assembly. Remove the Cap Screws 2. Switch on electrical power at your test controller. 3. Select force (load) control as the active control mode. 4. Disable any active interlocks. Warning: A dc error that’s not zero can make the actuator move violently when you turn hydraulic pressure on. You can be hurt and your Triaxial Cell damaged.
Operation Raise the Bell 7. Turn off load unit hydraulic pressure. Install the Specimen for Extension/Pore Pressure Tests Before installing a specimen, lubricate dry O-rings with clean confining fluid. Clean, inspect, and lubricate cap screws with clean confining fluid. 1. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on.
Operation Put the Specimen on the Platen Assembly Item Description 1 Dowel Pin 2 O-Ring 3 Hardline *Not used on extension tests. 2. Switch on electrical power at your test controller. 3. Select force control as the active control mode. Select the operating range you will run your test in. Set interlocks as required. Warning: A dc error that’s not zero can make the actuator move violently when you turn hydraulic pressure on. You can be hurt and your Triaxial Cell damaged.
Operation Apply a 1% Preload 6. Warning: The next steps put your hands in a crush zone with hydraulic pressure on. Keep your hands out of the crush zone except when actually doing the next three steps. Attach the upper end cap to the force transducer, and the lower end cap to the platen assembly. Hand start the cap screws. Then snug them up with a hex key.
Operation Attach the End Caps 7. Install the extensometer assembly on the specimen. (The hardline can make this an exasperating task.) Make your cable connections at the feed through connectors. Make your cable connections at the connector panel. Check your cabling connections. Pull gently on the extensometers and check the results at the test console. Make any cabling corrections as needed.
Operation Install the Extensometer Assembly Item Description 1 Pull gently to check the cabling. 2 Install the extensometers. 3 Connect the cables. 4 Connect the cables. 8. If you are going to perform a pore pressure test, connect both of the pore pressure hardlines.
Operation Install the Hardlines Install the Specimen for a Compression Test 1. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Install the specimen on the platen assembly. Make sure the dowel pin is in place before installing the specimen.
Operation 2. If you have not yet done so, switch on power at your test controller. 3. Select Force Control as active control mode. Select the operating range you will run your test in. Set the interlocks as required. 4. Warning: A dc error that’s not zero can make the actuator move violently when you turn hydraulic pressure on. You can be hurt and your Triaxial Cell damaged. Always zero the force control channel's dc error (command = feedback) before turning on your load unit's hydraulic pressure.
Operation Apply a 1% Preload Warning: The next step puts your hand in a crush zone with the hydraulic pressure on. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure the bell is locked up in place, and keep your hands out of the crush zone except when actually removing the specimen. 6. Connect the extensometer cables to their feedthroughs in the platen assembly. Check your cable connections.
Operation Connect the Extensometers Item Description 1 Pull gently to check cabling. 2 Connect cables. Pressurize the Triaxial Cell Note: You must know how to operate your confining and pore pressure intensifiers to successfully run tests. The figures in this section show a specimen setup for a pore pressure test. Pressurizing this Cell is basically the same for extension/pore pressure and compression tests. 1. Set the mode selector to Setup. 2. Unlock and lower the bell onto the platen assembly.
Operation Lower the Bell 3. Change the mode selector to Run. Note: Check the sealing cap screw threads to make sure they are in good shape. If they are dry, lube them with clean confining fluid. 4. Use a hex key to tighten the sealing cap screws. Seal the Triaxial Cell 5. Close and latch the door. 6. Check to make sure the confining valve is open.
Operation 7. Operate your confining pressure intensifier to purge the Cell of air and fill it with confining fluid. The Cell is filled with fluid when fluid returns to the confining intensifier reservoir. 8. Caution: Increasing compressive force without first increasing confining pressure may crack the specimen. If confining pressure is not increased, your specimen jacketing will blow out.
Operation Apply Confining Pressure 9. Clear the force interlocks. Increase the compressive force on the specimen. Fully Increase the Compressive Force 10. If you are running a pore pressure test, use your pore pressure intensifier to set pore pressure.
Operation Apply Pore Pressure Caution: You will blow out the jacket if you let the pore pressure get higher—even for a second—than the confining pressure. Remove the Old Specimen 1. Set and enable displacement interlocks to limit actuator movement to ± 2 in. (±50 mm). 2. If the specimen remains unbroken, reduce the compressive force to 1% of your operating range, then skip ahead to step 6.
Operation Reduce the Compressive Force If the specimen has failed, first do steps 3 – 5, then go on to step 6. 3. Display the displacement control channel’s dc error. 4. Caution: Make sure the displacement channel’s dc error is zero before putting this channel into active control. If it’s not, the actuator can move, damaging the extensometers. Select Displacement Control as your active control mode. Zero the displacement channel’s dc error. 5. If the load unit hydraulic pressure has shut off, turn it on.
Operation 7. Remove confining pressure. 8. Use compressed air from the confining intensifier to drain the Triaxial Cell of confining fluid.
Operation Drain the Cell The cell is drained when the confining intensifier’s reservoir begins bubbling vigorously. Warning: You could get sprayed with debris and confining fluid if you open a Triaxial Cell that still has pressure. You could be hurt and your Triaxial Cell damaged. Before opening the Triaxial Cell, make sure the Pressure Intensifier’s Confining Fluid Output valve is Open. The Triaxial Cell is still pressurized if its bell starts rising as you undo the last cap screws. 9.
Operation 10. Unscrew and remove the eight sealing cap screws. Remove the Cap Screws 11. Raise the bell, and lock it in an open position.
Operation 12. Warning: The next two steps put your hand in a crush zone with the hydraulic pressure on. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure the bell is locked up in place, and keep your hands out of the crush zone except when actually removing the specimen. If you have run a pore pressure test, remove the hardlines, and unscrew the 12 cap screws that attach the end caps to the force transducer and pore pressure assembly.
Operation Remove the extensometers. Remove the Extensometers 14. If your specimen has failed, clear the interlocks and skip ahead to step 16. 15. Clear the displacement interlocks, and slowly apply a tensile force to retract the actuator. If the specimen doesn’t separate immediately from the force train, stop when the tensile force equals 1% of your current operating range.
Operation Retract the Actuator Wait till the specimen breaks loose. 16. Fully retract the actuator. 17. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Remove the specimen.
Operation 18. Wipe the platen assembly free of debris. Make sure debris is removed from feedthrough holes and bell seal screw holes. Clean the Assembly Platen Changing Between Extension/Pore Pressure and Compression Test Setups This section explains how to change your Triaxial Cell between a setup ready to run pore pressure/extension tests to one ready to run compression tests.
Operation Changing to a Compression Test Setup This procedure has four major tasks: 1. 2. 3. 4. Raise and lock the bell. Change the force transducer (optional). Install the spherical platen. Plug the ports. The following figure shows a Triaxial Cell setup for a compression test.
Operation Item Description 6 Lower Confining Fluid Port 7 Lower Vent 8 Pore Pressure Ports 9 Spherical Platen 10 Platen Seal 11 Shoulder Bolt and O-Ring 12 Force Transducer O-Ring 13 Upper Vent Raise and Lock the Bell Note: Skip this section if the bell is up, locked in place, and you've turned load unit hydraulic pressure off. Warning: Opening a Triaxial Cell that still has pressure could spray you with debris and confining fluid. You could be hurt and your Triaxial Cell damaged.
Operation Important: Don’t let them dangle from the bell — they can damage the threads in the platen assembly. Remove the Cap Screws 2. Switch on electrical power at your test controller. 3. Select force (load) control as the active control mode. 4. Disable any active interlocks. Warning: A dc error that’s not zero can make the actuator move violently when you turn hydraulic pressure on. You can be hurt and your Triaxial Cell damaged.
Operation Raise the Bell 7. Turn off load unit hydraulic pressure. Change the Force Transducer Note: Skip this section if you are not changing force transducers. 1. Prepare your puller (supplied with the Triaxial Cell) to remove the insert at the bottom of the force transducer.
Operation 300 and 600 kip (1300 and 2600 kN) Force Transducers Item Description 1 O-Ring 2 #4 Cap Screw 2. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Disconnect the force transducer’s cable at its feedthrough connection. 3. Screw the puller’s two cap screws into the insert’s threaded holes.
Operation Remove the Force Transducer Note: Inspect and clean the shoulder bolt’s threads. Then lightly lubricate them with clean confining fluid. Also lubricate all dry O-rings with clean confining fluid. 5. Install the O-rings as shown in this figure. Tighten the shoulder bolt to 20 lb•ft (28 N•m). Install the Other Force Transducer Item Description 1 O-Ring 2 Tighten to 20 lb•ft (28 N•m) Caution: Install the insert so the side with three holes faces out.
Operation Install the Insert Item Description 1 Holes must face out. 2 O-Ring 3 Tap in place. 7. Connect the force transducer’s cable to its feedthrough in the platen. Install the Spherical Platen 1. Lubricate the domed sections of the spherical platen with clean confining fluid.
Operation 2. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Install the platen O-ring. Use a hex key to snug tight the cap screws that attach the platen to the force transducer. Install the Spherical Platen Item Description 1 O-Ring 2 Hand tighten. Plug the Ports 1.
Operation Plug Ports Item Description 1 Remove 2 Plug 2. Remove the vent line from the upper vent fitting. Plug this fitting.
Operation Item Description 2 Crosshead—Bottom View Changing to an Extension-Pore Pressure Test Setup This section tells you what must be done to go from a compression test setup to an extension or pore pressure test setup. This procedure has four major tasks: 1. 2. 3. 4. Raise and lock the bell. Remove the spherical platen. Change the force transducer (optional). Unplug the lines. The following figure shows a Triaxial Cell setup for an extension or pore pressure test.
Operation Item Description 1 Upper Confining Fluid Port 2 Force Transducer 3 Insert and O-Ring 4 Plugged Port 5 Special Use Ports 6 Lower Confining Fluid Port 7 Lower Vent 8 Pore Pressure Ports *plugged during extension tests 9 Shoulder Bolt and O-Ring 10 Force Transducer O-Ring 11 Upper Vent Raise and Lock the Bell Note: Skip this section if the bell is up, locked in place, and you've turned load unit hydraulic pressure off.
Operation Important: Don’t let them dangle from the bell — they can damage the threads in the platen assembly. Remove the Cap Screws 2. Switch on electrical power at your test controller. 3. Select force (load) control as the active control mode. 4. Disable any active interlocks. Warning: A dc error that’s not zero can make the actuator move violently when you turn hydraulic pressure on. You can be hurt and your Triaxial Cell damaged.
Operation Raise the Bell 7. Turn off load unit hydraulic pressure. Remove the Spherical Platen 1. Turn off load unit hydraulic pressure. 2. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Unscrew the six cap screws that attach the spherical platen to the force transducer.
Operation Remove the Spherical Platen Item Description 1 Unscrew 2 Support As you undo the cap screws, the lower half of the platen may separate from the upper half. Be prepared to support it. Change the Force Transducer Note: Skip this section if you are not changing force transducers. 1. Prepare your puller (supplied with the Triaxial Cell) to remove the insert at the bottom of the force transducer.
Operation Item Description 1 O-Ring 2 #6 Cap Screw 300 and 600 kip (1300 and 2600 kN) Force Transducers Item Description 1 O-Ring 2 #4 Cap Screw 2. Danger: The next step puts your hand in a crush zone. Hands can be crushed and equipment can be damaged equipment when hydraulics are turned on. Make sure you have turned off load unit hydraulic pressure and locked the bell up in place. Disconnect the force transducer’s cable at its feedthrough connection. 3.
Operation Remove the Insert 4. Remove the force transducer. Remove the Force Transducer Note: Inspect and clean the shoulder bolt’s threads. Then lightly lubricate them with clean confining fluid. Also lubricate all dry O-rings with clean confining fluid. 5. Install the O-rings as shown in this figure. Tighten the shoulder bolt to 20 lb•ft (28 N•m).
Operation Item Description 2 Tighten to 20 lb•ft (28 N•m) Caution: Install the insert so the side with three holes faces out. If this side faces in, the insert’s O-ring may leak. 6. Install the O-ring on the force transducer’s insert. Then use a nylon mallet to tap the insert in place. Install the Insert Item Description 1 Holes must face out. 2 O-Ring 3 Tap in place. 7. Connect the force transducer’s cable to its feedthrough in the platen. Unplug Lines 1.
Operation Unplug Lines Item Description 1 Install Hose 2 Unplug 3 Unplug *for pore tests only 2. Unplug the upper vent line. Install a vent hose on this line’s fitting. Route the hose to the 5 gallon (20 litre) pail.
Operation Item Description 2 Unplug 3 Crosshead—Looking up Triaxial Cell Product Information | 81
Maintenance Topics: • Maintenance......................................................................................................................................
Maintenance Maintenance User Maintenance • Always use clean confining fluid. Contaminants can increase the fluid's electrical conductivity. This will affect the readings from the in-vessel instrumentation. • When the confining fluid needs changing, use only MTS approved oil. We recommend Multitherm® PG-1, a highly refined, clear, and non-toxic mineral oil. • Always clean oil, debris, and water from the baseplate, platen, feedthroughs, cap screw holes, and high pressure seal after each test.
MTS Systems Corporation 14000 Technology Drive Eden Prairie, Minnesota 55344-2290 USA Toll Free Phone: 800-328-2255 (within 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.
