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2620-600 Series

Dynamic Strain Gauge

Extensometers

Reference Manual - Equipment

M26-16655-EN Revision A

The difference is measurable ®

Summary of Contents for 2620-600 Series

Page 1: ...2620 600 Series Dynamic Strain Gauge Extensometers Reference Manual Equipment M26 16655 EN Revision A The difference is measurable...

Page 2: ...nt and the information that it contains to others and the right to use the information contained therein may be acquired only by written permission signed by a duly authorized officer of ITW Trademark...

Page 3: ...sure you gain a thorough understanding of the equipment by receiving training on the safe operation of the system reading and understanding the general hazards associated with materials testing system...

Page 4: ...uments are used and over which we have no control additional protection devices and operating procedures may be necessary due to specific accident prevention regulations safety regulations further EEA...

Page 5: ...Ensure that all actuator or crosshead movements necessary for installation or removal are slow and where possible at a low force setting Hazard Press the Emergency Stop button whenever you consider th...

Page 6: ...may be tested any hazard resulting from the failure of a test specimen assembly or structure is entirely the responsibility of the owner and the user of the equipment Hazard Protect electrical cables...

Page 7: ...s when handling equipment at these temperatures Display a warning notice concerning low or high temperature operation whenever temperature control equipment is in use You should note that the hazard f...

Page 8: ...Preliminary Pages viii M26 16655 EN...

Page 9: ...ing Precautions 2 1 Preparing for Use 2 3 Mounting the Extensometer 2 5 Calibration 2 11 Electrical Calibration 2 12 Manual Calibration 2 13 Temperature Calibration 2 13 Chapter 3 Maintenance 3 1 Rout...

Page 10: ...Preliminary Pages x mM26 16655 EN...

Page 11: ...well as straight line ramp testing may be performed with these devices They are designed for use with metals rigid thermoplastic and thermosetting polymers and other materials exhibiting total strains...

Page 12: ...ravel and an aluminium case protects the gauges and the associated wiring from mechanical damage A full kit of accessories is packed in a protective box together with the extensometer and includes all...

Page 13: ...ngth rubber bands or with tension springs Replaceable tool steel knife edges attached to the ends of both the fixed and flexural beams bear against the specimen and prevent slippage Although the clamp...

Page 14: ...Chapter Introduction 1 4 M26 16655 EN If you have a test situation for which you need specific information contact your local Instron Sales Office or technical support team...

Page 15: ...Electrical Calibration 2 12 Manual Calibration 2 13 Temperature Calibration 2 13 Handling Precautions Caution Observe all handling precautions given below to prevent damage to the extensometer Whenev...

Page 16: ...not try to exercise the flexural element beyond its mechanical stops when handling or installing When operating the extensometer attached to a specimen ensure the maximum expected strain for the sampl...

Page 17: ...knife edge by removing the two socket head cap screws securing the knife edge to the fixed black beam using the ball end hexagon wrench provided in the accessories kit When installing a short extender...

Page 18: ...screws through the lower lip of the extender Inspect the extensometer for free operation and ensure that the knife edges are aligned parallel with each other and are not dulled or nicked Warning Hazar...

Page 19: ...en or the calibration fixture in exactly the same manner The mounting sequence is illustrated in Figure 2 1 When using the rubber bands as clamping devices it may be necessary to double loop the bands...

Page 20: ...ot to nick or scratch the test sample with the hardened steel knife edges Nicks and scratches particularly on softer samples can be caused by a clamping spring or rubber band that is too tight and wil...

Page 21: ...tall the gauge length pin 2 Orient the extensometer so that the electrical cable exits from the upper side of the extensometer 3 While holding the extensometer in the left hand place it against the sp...

Page 22: ...Using the crochet hook slip the near end of the clamping device over the other end of the knife edge The extensometer will tend to rotate around the specimen so ensure that the extensometer does not...

Page 23: ...en If one is not the knife edges are not parallel loosen the screws mounting the upper knife edge and while gently pressing the extensometer against the specimen tighten the screws 7 To prevent strain...

Page 24: ...c cleat to support the cable Leave a loop or some slack in the cable so that the extensometer is free to move without being pulled by the cable This is especially important when operating the system i...

Page 25: ...pin is out do not move the extensometer on the specimen or the calibrated gauge length will be lost Calibration To ensure that the Extensometer indicates precisely the relative movement of the specime...

Page 26: ...l identify itself uniquely to an Instron controller so that basic calibration data does not need re inputting every time the gauge is moved 2 Connect the plug into the 25 way transducer socket on the...

Page 27: ...ish to calibrate the Extensometer manually for instance because you need to calibrate the device for use at an elevated temperature consult the documentation supplied with your control system for the...

Page 28: ...the gauge will introduce a small error Electrical calibration using the internal shunt resistance is only valid at or close to 20 C If you are calibrating the span of the gauge at a temperature outsi...

Page 29: ...arly under the cover commercial solvents such as Chlorothene N U and Methyl Ethyl Ketone MEK may be used sparingly with a soft brush or soft lint free cloth but do not immerse the extensometer in solv...

Page 30: ...are impossible All defective or damaged units must be return to the factory for repair or replacement Damaged or lost accessories can be replaced using the following list by contacting the nearest Ins...

Page 31: ...mm T1351 1017 Gauge Length Extension 40 mm T1351 1016 6 Tension Spring 5 8 in long 66 1 76 Tension Spring 3 4 in long 66 1 77 Tension Spring 7 8 in long 66 1 75 Tension Spring 1 in long 66 1 78 Tensio...

Page 32: ...Chapter Maintenance 3 4 M26 16655 EN...

Page 33: ...n this manual Parameter Value Linearity 0 15 of Full Scale Hysteresis 0 15 FS 60 Full Scale Creep 1 0 15 of Full Scale Operating Force 2620 601 602 603 150g 2620 604 75g Output Sensitivity 2 5 mV V no...

Page 34: ...Mechanical Stops Gauge Length Setting and Lock Removable Pin Attachment Special High Tear Strength Rubber Bands or Tension Springs Weight less cable and connector Less than 20 grams Specimen Sizes Ro...

Page 35: ...Series 5500 Series 5900 Series 8800 Series 8500 Series 8000 Series 1270 Series 1250 Series 1330 Series 1 Creep Error is the difference between the reading taken at 5 seconds and at 3 minutes after the...

Page 36: ...none 12 5 37 5 Gauge Length mm 12 5 25 50 Full Scale range mm 5 5 5 Maximum Strain 40 20 10 Frequency Range Hz 0 50 0 50 0 50 Extension length mm none 12 5 37 5 Gauge Length mm 12 5 25 50 Full Scale r...

Page 37: ...ithout a gauge length extender Extension length mm none 15 40 Gauge Length mm 10 25 50 Full Scale range mm 1 1 1 Maximum Strain 10 4 2 Frequency Range Hz 0 100 0 100 0 100 Extension length mm 15 40 Ga...

Page 38: ...Chapter Specification A 6 M26 16655 EN...

Page 39: ...emergency stop v excitation A 1 extender 2 3 to 2 4 extremes of temperature vii F flying debris vi frequency range A 4 to A 5 full scale A 4 to A 5 G gauge length A 4 to A 5 gauge length extension 3 3...

Page 40: ...3 S safe operation iii safety risk assessment iii training iii sensitivity A 1 short extender 2 3 solvents 3 1 specifications A 1 specimen sizes A 2 static testing 1 2 T temp calibration 2 13 tension...

Page 41: ...versity Avenue Norwood MA 02062 2643 United States of America European Headquarters Instron Coronation Road High Wycombe Bucks HP12 3SY United Kingdom Industrial Products Group Instron 900 Liberty Str...

Page 42: ...Product Support www instron com...

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