Model 286.
Copyright information Trademark information Contact information Publication information © 2007 MTS Systems Corporation. All rights reserved. MTS is a registered trademark of MTS Systems Corporation. 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 http://www.mts.
Contents Introduction 5 Major Components 6 Control Panel Valves Specifications 7 9 How the Pressure Intensifier Works The Area Ratio 10 11 Operation 13 Operating the Control Panel Valves 15 Purging and Filling the Fluid Lines 16 Fill the Fluid Reservoir 17 Purge and Fill the Pressure Intensifier Pressurize the Intensifier 20 22 Purge and Fill the Lower Pore Line 24 Purge and Fill the Reference Volume 1 Lines 26 Purge and Fill the Balance and Upper Pore Lines Purge and Fill the Reference
286.
Introduction This manual documents the Model 286.31 Transient Permeability Pore Pressure Intensifier. The 286.31 pressurizes fresh, distilled water up to 10,000 psi (69 MPa). The pressurized fluid is applied to a specimen installed in a triaxial cell to test its permeability characteristics. 286.
Major Components Major Components 1 2 3 9 4 7 5 8 6 6 1 vent is a removable cap that allows air trapped in the system to escape; also the fill point for manually filling the reservoir. 2 cabinet houses the 286.31. It has leveling casters and a rear access door. 3 fluid reservoir holds the system’s distilled water in a clear acrylic container. 4 control panel has the valves needed to operate the 286.31.
Control Panel Valves Control Panel Valves 286.
Control Panel Valves 1 Intensifier Fill controls the flow of fluid from the Reservoir into the Pressure Intensifier. 2 Reservoir Fill/Drain controls the flow of fluid into the Fluid Reservoir when the 286.31 is connected to a fluid supply. 3 Reservoir Return is normally kept closed. 4 Permeability Fluid Input 1 Permeability Fluid Input 2 control the filling and pressurization of Reference Volumes 1 and 2.
Specifications Specifications Console Dimensions height 74 in. 1880 mm width 24 in. 610 mm depth 32 in 813 mm Weight 1000 lb 454 kg Reservoir capacity 1.6 gal (369 in3) 6.1 litre (6050 cm3) Intensifier capacity 0.09 gal (20 in3) 0.34 litre (340 cm3) Controllable output pressure 12,000 psi 20,000 psi 80 MPa 140 MPa Max. fluid temperature 167°F 75°C Fluid type distilled water Hardline fittings F375C (female) 286.
How the Pressure Intensifier Works How the Pressure Intensifier Works The 286.31’s Pressure Intensifier develops the 10,000 psi (69 MPa) pressures applied to your specimen. The pressure transformer is the part of the Intensifier that develops this pressure. The pressure transformer’s principle: low pressure applied to a large area produces a large force. Apply this force over a smaller area and you will produce a higher pressure.
How the Pressure Intensifier Works The Area Ratio The area ratio is the ratio of the input pressure to the output pressure. It determines how much the input pressure boosts the output pressure. It is A area ratio = -----1A2 The identification label on your 286.31 gives its area ratio. For example, your label says the area ratio is 3.33:1. This means a 3000 psi input pressure will produce a 10,000 psi output pressure. 286.
How the Pressure Intensifier Works 12 Introduction 286.
Operation Operation of the 286.31 Intensifier consists of — • Purging and Filling the Fluid Lines • Running a Steady State Flow Test • Running a Transient Permeability Flow Test Note Complete purging needs only to be done when — • You first install the 286.31. • You accidentally draw air into the Pressure Intensifier Special equipment needed — • distilled water — at least 2 gallons (8 litres) • 1% Triton® wetting solution • Teflon® thread sealing tape The 286.
The following warning, caution, and note apply during all steps. WARNING You will be working with very high pressures — The spray from a leak could cut your skin. The 286.31 develops intensely high pressures (10000 psi/69 MPa). Broken lines or fittings could produce a skin cutting spray. Stop if you can’t build up to test pressure. You may have a leak somewhere. Reduce pressure to zero, then find and repair the leak.
Operating the Control Panel Valves Operating the Control Panel Valves Most of the steps in this section involve opening and closing valves on the 286.31’s control panel. The pictures that follow in this section will show you which valves to open and close. The figure below is the key to these pictures. A full turn opens a valve completely but still lets you shut it quickly. It takes only light force to shut the valve completely, though using more force won’t hurt it. 286.
Purging and Filling the Fluid Lines Purging and Filling the Fluid Lines In this section you’ll purge the 286.31’s lines of air and fill them with distilled water. You only need to do this after installing the 286.31 or if you’ve accidentally drawn air into the Pressure Intensifier through a dry Fluid Reservoir. Note Before you start purging and filling, make sure your Triaxial Cell is open.
Purging and Filling the Fluid Lines Fill the Fluid Reservoir CAUTION An open Transducer Pressure Balance valve protects the differential pressure transducer from damaging high system pressures — Keep this valve open except when told to close it. 1. Protect the differential pressure transducer. Turn the Transducer Pressure Balance valve to the Open position. 286.
Purging and Filling the Fluid Lines 2. If there is a specimen installed in the triaxial cell, remove it. Lines cannot be purged and filled with a specimen in place. You will find instructions for removing the specimen in your Triaxial Cell manual. 3. Prepare to fill the Fluid Reservoir. Turn the Pore Fluid Output, Pore Fluid Input, Permeability Output, and Permeability Input valves to the Close position. 18 Operation 286.
Purging and Filling the Fluid Lines 4. Fill the Fluid Reservoir. If your 286.31 is connected to a distilled water supply — Turn the Reservoir Fill/Drain valve to the Open position. When the Fluid Reservoir is about 3/4 full, turn the Reservoir Fill/ Drain valve to the Close position. If your 286.31 is not connected to a distilled water supply — Remove the filler plug at the top of the 286.31’s cabinet. Open the console’s rear door. Unscrew one of the hex–head plugs in the Reservoir.
Purging and Filling the Fluid Lines Purge and Fill the Pressure Intensifier 1. Switch on electrical power at the control console. 2. Set up the test controller to control the 286.31’s Pressure Intensifier from the Manual Control on the RCS (Remote Station Controller). 3. Select the pore pressure control channel’s most sensitive operating range. 4. Select pore pressure as the active control mode. 5. Apply high hydraulic pressure to the 286.31. 20 Operation 286.
Purging and Filling the Fluid Lines 6. Prepare to purge the Pressure Intensifier of air and fill it with fluid. Turn the Permeability Fluid Input 1, Permeability Fluid Input 2, and Reservoir Return valves to the Close position. Turn the Intensifier Fill valve to the Open position. 7. On the test controller, monitor the displacement sensor output. 8. Purge the Pressure Intensifier of air and fill it with fluid.
Purging and Filling the Fluid Lines Pressurize the Intensifier 1. On the test controller, monitor the pressure sensor output. 2. Prepare to pressurize the fluid in the 286.31. Turn the Intensifier Fill valve to the Close position. 22 Operation 286.
Purging and Filling the Fluid Lines 3. Extend the Pressure Intensifier’s piston to pressurize the fluid. On the RSC, slowly turn the Manual Control to develop a slight positive pressure. While purging, keep the pressure as low as practical but positive all the time. Keep watching the pore pressure as you purge the lines. If pressure starts dropping and extending the piston does not raise the pressure, you will have to stop and refill the Pressure Intensifier.
Purging and Filling the Fluid Lines Purge and Fill the Lower Pore Line 1. Purge the lower pore pressure line of air and fill it with fluid. Turn the Pore Fluid Input valve to the Open position. Fluid and bubbles will come out of the triaxial cell's lower pore pressure port. As soon as the bubbles stop, go on to step 2. 24 Operation 286.
Purging and Filling the Fluid Lines 2. Shut off the flow to the triaxial cell. Turn the Pore Fluid Input valve to the Close position. 286.
Purging and Filling the Fluid Lines Purge and Fill the Reference Volume 1 Lines 1. Prepare to purge the Reference Volume 1 lines of air and fill them with fluid. Turn the Permeability Fluid Input 1 valve to the Open position. Turn the Transducer Input 1 valve to the Close position. 26 Operation 286.
Purging and Filling the Fluid Lines 2. Purge the Reference Volume 1 lines of air and fill them with fluid. Turn the Permeability Input valve to the Open position. As soon as the fluid coming out at the triaxial cell’s lower pore pressure port becomes bubble-free, go on to step 3. 286.
Purging and Filling the Fluid Lines 3. Shut off the flow to the triaxial cell. Turn the Permeability Input valve to the Close position. 28 Operation 286.
Purging and Filling the Fluid Lines Purge and Fill the Balance and Upper Pore Lines 1. If your triaxial cell has a upper pore pressure valve, open it now. 2. Prepare to purge the Transducer Pressure Balance and upper pore pressure lines of air and fill them with fluid. Turn the Transducer Input 1 and Transducer Input 2 valves to the Open position. 286.
Purging and Filling the Fluid Lines 3. Purge the Transducer Pressure Balance and upper pore pressure port lines of air and fill them with fluid. Turn the Permeability Output to the Open position. As soon as the fluid coming out at the triaxial cell’s upper pore pressure port becomes bubble-free, go on to step 4. 30 Operation 286.
Purging and Filling the Fluid Lines 4. Shut off the fluid flow to the triaxial cell. Turn the Permeability Output valve to the Close position. 286.
Purging and Filling the Fluid Lines Purge and Fill the Reference Volume 2 Lines 1. Prepare to purge the Reference Volume 2 lines of air and fill them with fluid. Turn the Permeability Fluid Input 2 valve to the Open position. Turn the Transducer Input 2 and Permeability Fluid Input 1 valves to the Close position. 32 Operation 286.
Purging and Filling the Fluid Lines 2. Purge the Reference Volume 2 lines of air and fill them with fluid. Turn the Permeability Output to the Open position. As soon as bubble-free fluid starts coming out at the triaxial cell’s upper pore pressure port, go on to step 3. 286.
Purging and Filling the Fluid Lines 3. Stop the flow to the triaxial cell. Turn the Permeability Output valve to the Close position. 4. If your Triaxial Cell has an upper pore pressure valve, close it now. 34 Operation 286.
Purging and Filling the Fluid Lines Purge and Fill the Low Pressure Reservoir Line 1. Prepare to purge the low pressure Fluid Reservoir line of air and fill it with fluid. Turn the Pore Fluid Output valve to the Open position. Air in this line will come out at the Fluid Reservoir. 286.
Purging and Filling the Fluid Lines 2. Purge the low pressure Fluid Reservoir line of air and fill it with fluid. If your triaxial cell doesn’t have a shut off valve for the upper pore pressure line, plug this line at its triaxial cell output. Cap it or plug it with your finger (or a helper’s). Turn the Permeability Output valve to the Open position. As soon as the fluid entering the Fluid Reservoir becomes bubble-free, go on to step 3. 36 Operation 286.
Purging and Filling the Fluid Lines 3. Stop the flow to the Fluid Reservoir. Turn the Permeability Output valve to the Close position. 4. Uncap the Triaxial Cell’s upper pore pressure line if you have plugged it. 286.
Purging and Filling the Fluid Lines Purge and Fill the Reservoir Return Line 1. Prepare to purge the Reservoir Return line of air and fill it with fluid. Turn the Pore Fluid Output and Permeability Fluid Input 2 valves to the Close position. Air purged from this line will bubble out at the Fluid Reservoir. 38 Operation 286.
Purging and Filling the Fluid Lines 2. Purge the reservoir return line of air and fill it with fluid. Turn the Reservoir Return valve to the Open position. As soon as bubbles stop coming out at the Fluid Reservoir, go on to step 3. 286.
Purging and Filling the Fluid Lines 3. Stop the flow to the Fluid Reservoir. Turn the Reservoir Return valve to the Close position. 40 Operation 286.
Purging and Filling the Fluid Lines Refill the Pressure Intensifier 1. On the RSC, turn the Manual Control until pressure drops to zero. 2. On the test controller, monitor the displacement sensor output. 3. Prepare to refill the Pressure Intensifier. Turn the Intensifier Fill valve to the Open position. 286.
Purging and Filling the Fluid Lines 4. Refill the Pressure Intensifier with fluid. On the RSC, slowly turn the Manual Control to retract the Intensifier’s piston. Stop when the displacement signal shows a fully retracted piston. 5. Make sure the Pressure Transducer line is fully purged so air bubbles will not be forced into the pore lines. On the RSC, slowly turn the Manual Control to extend the Intensifier’s piston. Stop when bubble-free fluid begins flowing back into the Reservoir.
Purging and Filling the Fluid Lines 7. Prepare to pressurize the 286.31's lines. Turn the Intensifier Fill valve to the Close position. 8. On the RSC, slowly turn the Manual Control to produce a positive pressure. 286.
Running a Steady State Flow Test Running a Steady State Flow Test Running a steady state flow test has five major tasks • Fill the Pressure Intensifier • Purge and Fill the Pore Pressure Lines • Refill the Pressure Intensifier • Prepare to Run the Test • End the Test Note 44 Operation If you have just done a complete purge of the 286.31, skip ahead to “Prepare to Run a Test” on page 56. 286.
Running a Steady State Flow Test Fill the Pressure Intensifier 1. If you have a specimen installed in the triaxial cell, remove it now. Your triaxial cell manual has the details on doing this. 2. Turn the valves to match the positions shown in the Step 3 picture. 3. Skip this step if the Reservoir is already 3/4 full. Fill the Fluid Reservoir. If your 286.31 is connected to a distilled water supply — Turn the Reservoir Fill/Drain valve to the Open position.
Running a Steady State Flow Test 4. Switch on electrical power at the control console. 5. Set up the test controller to control the 286.31’s Pressure Intensifier from Manual Control on the RSC. 6. Select pore pressure as the active control mode. 7. Select the pore pressure control channel’s most sensitive operating range. 8. Apply high hydraulic pressure to the 286.31. 9. Prepare to purge the Pressure Intensifier of air and fill it with fluid. Turn the Intensifier Fill valve to the Open position.
Running a Steady State Flow Test 10. On the test controller, monitor the displacement sensor output. 11. Purge the Pressure Intensifier of air and fill it with fluid. On the RSC, slowly turn the Manual Control clockwise, then counterclockwise to fully stroke the Intensifier’s piston. Watch the displacement signal to make sure you fully stroke the piston. When the bubbling at the Fluid Reservoir stops, use the RSC Manual Control to fully retract the Intensifier’s piston. 12.
Running a Steady State Flow Test 13. Prepare to pressurize the fluid in the 286.31. Turn the Intensifier Fill valve to the Close position. 14. Pressurize the fluid in the 286.31 by extending the Intensifier’s piston. On the RSC, slowly turn the Manual Control to develop a positive pressure. As you purge the pore pressure lines, keep the pressure low but positive all the time. Keep an eye on the pressure as you purge the lines. 48 Operation 286.
Running a Steady State Flow Test Purge and Fill the Pore Pressure Lines 1. Purge and fill the lower pore pressure line. Turn the Pore Fluid Input valve to the Open position. As soon as bubble-free fluid comes out at the triaxial cell’s lower pore pressure port, go on to step 2. 286.
Running a Steady State Flow Test 2. Shut off the flow of fluid to the triaxial cell. Turn the Pore Fluid Input valve to the Close position. 3. If your triaxial cell has an upper pore pressure valve, open it now. 50 Operation 286.
Running a Steady State Flow Test 4. Purge and fill the upper pore pressure line. Turn the Reservoir Return and Pore Fluid Output valves to the Open position. Go on to step 5 as soon as bubble–free fluid comes out of the upper pore pressure line. 286.
Running a Steady State Flow Test 5. Turn the Reservoir Return and Pore Fluid Output valves to the Close position. 52 Operation 286.
Running a Steady State Flow Test Refill the Pressure Intensifier 1. Refill the Fluid Reservoir. You can skip this step if the Reservoir is already 3/4 full. If your 286.31 is connected to a distilled water supply — Turn the Reservoir Fill/Drain valve to the Open position. When the Fluid Reservoir is about 3/4 full, turn the Reservoir Fill/ Drain valve to the Close position. If your 286.31 is not connected to a distilled water supply — Remove the filler plug at the top of the 286.31.
Running a Steady State Flow Test 2. On the test controller, monitor the displacement sensor output. 3. Prepare to refill the Pressure Intensifier with fluid. Turn the Intensifier Fill valve to the Open position. 4. Fill the Pressure Intensifier with fluid. On the RSC, slowly turn the Manual Control to fully retract the Intensifier’s piston. Watch the displacement signal to make sure you have fully retracted the piston. 54 Operation 286.
Running a Steady State Flow Test 5. Prepare to pressurize the fluid in the 286.31. Turn the Intensifier Fill valve to the Close position. 286.
Running a Steady State Flow Test Prepare to Run a Test 1. Install your specimen in the triaxial cell. For the details on doing this step, see the installation section of your triaxial cell manual. CAUTION If pore pressure becomes higher than confining pressure — even for a second — your specimen will be damaged. Always keep confining pressure higher than pore pressure. 2. If your Triaxial Cell has an upper pore pressure shut off valve, make sure it’s open. 3. Apply a confining pressure to the specimen.
Running a Steady State Flow Test 6. Begin the steady state flow test Turn the Pore Fluid Input and Pore Fluid Output valves to the Open position. Fluid will slowly flow through the specimen and into the Fluid Reservoir, discharging at atmospheric pressure. 286.
Running a Steady State Flow Test End the Test 1. On the test controller, monitor the pressure sensor output. 2. Remove pressure from the lines. On the RSC, turn the Manual Control control slowly until pressure becomes zero. 3. Isolate the triaxial cell. Turn the Pore Fluid Output and Pore Fluid Input valves to the Close position. 4. If your triaxial cell has an upper pore pressure valve, close it. 58 Operation 286.
Running a Transient Permeability Flow Test Running a Transient Permeability Flow Test Performing a permeability flow test has five major tasks • Fill the Pressure Intensifier • Purge and Fill the Pore Pressure Lines • Refill the Pressure Intensifier • Prepare to Run the Test • End the Test Note If you have just done a complete purge of the 286.31, skip ahead to Section 2.3.4. It begins on page 2-96. 286.
Running a Transient Permeability Flow Test Fill the Pressure Intensifier 1. If you have a specimen installed in the triaxial cell, remove it now. Your triaxial cell manual has the details on doing this. 2. Turn the valves to match the positions shown in the Step 3 picture. 3. Fill the Fluid Reservoir. Skip this step if the reservoir is 3/4 full. If your 286.31 is connected to a distilled water supply — Turn the Reservoir Fill/Drain valve to the Open position.
Running a Transient Permeability Flow Test 4. Switch on electrical power at the control console. 5. Set up the test controller to control the 286.31’s Pressure Intensifier from the RSC (Remote Station Controller). 6. Select the pore pressure control channel’s most sensitive operating range. 7. Select pore pressure as the active control mode. 8. Apply high hydraulic pressure to the 286.31. 9. Prepare to purge the Pressure Intensifier of air and fill it with fluid.
Running a Transient Permeability Flow Test 11. Purge the Pressure Intensifier of air and fill it with fluid. On the RSC, slowly turn the Manual Control clockwise, then counterclockwise to fully stroke the Intensifier’s piston. Watch the displacement signal to make sure you fully stroke the piston. When the bubbling at the Fluid Reservoir stops, use the Manual Control to fully retract the Intensifier’s piston. 12. On the test controller, monitor the pressure sensor output. 13.
Running a Transient Permeability Flow Test Purge and Fill the Pore Pressure Lines 1. Purge and fill the lower pore pressure line. Turn the Pore Fluid Input valve to the Open position. As soon as bubble-free fluid comes out at the triaxial cell’s lower pore pressure port, go on to step 2. 286.
Running a Transient Permeability Flow Test 2. Shut off the flow of fluid to the triaxial cell. Turn the Pore Fluid Input valve to the Close position. 3. If your triaxial cell has an upper pore pressure valve, open it now. 64 Operation 286.
Running a Transient Permeability Flow Test 4. Purge and fill the upper pore pressure line. Turn the Reservoir Return and Pore Fluid Output valves to the Open position. Go on to step 5 as soon as bubble–free fluid comes out of the upper pore pressure line. 286.
Running a Transient Permeability Flow Test 5. Turn the Reservoir Return and Pore Fluid Output valves to the Close position. 66 Operation 286.
Running a Transient Permeability Flow Test Refill the Pressure Intensifier 1. Refill the Fluid Reservoir. You can skip this step if the Reservoir is already 3/4 full. If your 286.31 is connected to a distilled water supply — Turn the Reservoir Fill/Drain valve to the Open position. When the Fluid Reservoir is about 3/4 full, turn the Reservoir Fill/ Drain valve to the Close position. If your 286.31 is not connected to a distilled water supply — Remove the filler plug at the top of the 286.31.
Running a Transient Permeability Flow Test 2. On the test controller, monitor the displacement sensor output. 3. Prepare to refill the Pressure Intensifier with fluid. Turn the Intensifier Fill valve to the Open position. 4. Fill the Pressure Intensifier with fluid. On the RSC, slowly turn the Manual Control to fully retract the Intensifier’s piston. Watch the displacement signal to make sure you have fully retracted the piston. 68 Operation 286.
Running a Transient Permeability Flow Test 5. Prepare to pressurize the fluid in the 286.31. Turn the Intensifier Fill valve to the Close position. 286.
Running a Transient Permeability Flow Test Prepare to Run the Test \ 1. Install your specimen in the triaxial cell. For the details on this procedure, refer to the installation section of your triaxial cell manual. CAUTION If pore pressure becomes higher than confining pressure — even for a second — your specimen will be damaged. Always keep confining pressure higher than pore pressure. 2. Apply a confining pressure to the specimen. Always keep confining pressure higher than pore pressure.
Running a Transient Permeability Flow Test 4. Prepare to pressurize Reference Volume 2. Turn the Permeability Fluid Input 1, Permeability Fluid Input 2, and Transducer Input 2 valves to the Open position. 5. Pressurize Reference Volume 2. On the RSC, slowly turn the Manual Control to develop the Reference Volume 2 pressure you want. 286.
Running a Transient Permeability Flow Test 6. Apply Reference Volume 2 pressure to the specimen. Turn the Permeability Input and Permeability Output valves to the Open position. 72 Operation 286.
Running a Transient Permeability Flow Test 7. Separate Reference Volume 2 from Reference Volume 1. Turn the Permeability Input, Transducer Pressure Balance, and Permeability Fluid Input 2 valves to the Close position. You are now applying pressure to the 286.31's differential pressure transducer. 8. Monitor the pressure differential transducer’s pressure signal. CAUTION The 286.
Running a Transient Permeability Flow Test 9. Compress the Reference Volume 1 fluid some more to create the pressure differential between Volumes 1 and 2. On the RSC, turn the Manual Control to create the pressure differential you want. 10. Isolate Reference Volume 1 from the Pressure Intensifier. Turn the Permeability Fluid Input 1 valve to the Close position. 74 Operation 286.
Running a Transient Permeability Flow Test 11. If needed, fine-tune the pressure differential between Reference Volume 1 and Reference Volume 2. Adjust the Transducer Input 1, Transducer Input 2, and Permeability Output valves. Do not close them, but turn them enough to change their valve positions. This can be done now and when you are running the test. 12. If the rest of your system is ready, start your data acquisition procedure. 286.
Running a Transient Permeability Flow Test 13. Start the transient permeability flow test. Turn the Permeability Input valve to the Open position. 76 Operation 286.
Running a Transient Permeability Flow Test End the Test 1. Bypass the differential pressure transducer. Turn the Transient Pressure Balance valve to the Open position. 286.
Running a Transient Permeability Flow Test 2. Prepare to reduce pore pressure to zero. Turn the Permeability Input 1 and Permeability Input 2 valves to the Open position. 3. On the test controller, monitor the pressure sensor output. 4. Reduce pore pressure to zero. On the RSC, slowly turn the Manual Control to reduce pressure to zero. 78 Operation 286.
Running a Transient Permeability Flow Test 5. Isolate the triaxial cell. Turn the Permeability Output and Permeability Input valves to the Close position. 6. If your triaxial cell has an upper pore pressure valve, close it. 286.
Running a Transient Permeability Flow Test 80 Operation 286.
Maintenance Prevent bacteria from growing in the pore fluid. Do this by adding a bactericide to the fluid and by changing the pore fluid frequently. Pore fluid lines can be flushed with a mild detergent solution. Use the steps in “Purging and Filling the Fluid Lines” on page 16 to flush the lines. Follow the detergent flush with a thorough fresh water flush. Check the accumulators’ precharge pressures at least once a month. Your Series 111 Accumulator manual has details on accumulator maintenance. 286.
Maintenance 286.
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 http://www.mts.
