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Instron 2630-100 Series, Reference Manual

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Instron 2630-100 Series Reference Manual Download Page 43

Working in Strain Control

45

Product Support: 

www.instron.com

•

Ensure that the testing machine loop-

shaping parameters are set correctly.

Warning

Before attaching or removing the 

extensometer from the specimen:

•

Ensure that the machine is not in strain 

control.

•

Apply specimen protect (or load 

protect) if your system has that feature.

Crush Hazard - Do not attach or 

remove the extensometer while the 

system is in strain control.

Summary of Contents for 2630-100 Series

Page 1: ...2630 100 Series Clip On Extensometer Reference Manual Equipment M20 52630 1 Revision H The difference is measurable...

Page 2: ...he document 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...

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: ...ruments 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 EE...

Page 5: ...ontrols Crush Hazard Take care when installing or removing a specimen assembly structure or load string component Installation or removal of a specimen assembly structure or load string component invo...

Page 6: ...ituation that caused the use of the Emergency Stop button before you reset it Flying Debris Hazard Wear eye protection and use protective shields or screens whenever any possibility exists of a hazard...

Page 7: ...the jaws by at least the amount recommended in your grip documentation This amount can vary between 66 to 100 insertion depth refer to supplied instructions for your specific grips Use any centering...

Page 8: ...nd associated hazard to the operator High Low Temperature Hazard Wear protective clothing when handling equipment at extremes of temperature Materials testing is often carried out at non ambient tempe...

Page 9: ...the covers are removed Refit covers as soon as possible Hazard Do not place a testing system off line from computer control without first ensuring that no actuator or crosshead movement will occur up...

Page 10: ...Refit covers as soon as possible Hazard Shut down the hydraulic power supply and discharge hydraulic pressure before disconnection of any hydraulic fluid coupling Do not disconnect any hydraulic coupl...

Page 11: ...hrough zero are occurring are at risk of fatigue cracks developing if components of the load string are not correctly pre loaded to one another Apply the specified torque to all load string fasteners...

Page 12: ...Preliminary Pages 12 M20 52630 1 EN...

Page 13: ...ometer 22 Fitting Wire Clips 22 Knife Edge Changing 23 Specimen Centering Stops 24 Attaching the Extensometer 25 Gauge Length Setting 25 About Mounting to Specimen 28 Mounting to the Specimen using Bo...

Page 14: ...3 About Testing 43 Working in Strain Control 44 Appendix A Specifications 47 Gauge Lengths and Travel 48 System Compatibility 50 General Specifications 52 Environmental Conditions 53 Appendix B Option...

Page 15: ...nal When used with the current range of Instron testing machines each extensometer is automatically recognised and can be calibrated at the touch of a button The displacement is transmitted by a light...

Page 16: ...tored in the case supplied with it Extensometer Features Ergonomic lightweight cross braced design with overload protection Easy attachment and release from the specimen facilitate single handed opera...

Page 17: ...hangeable knife edges Suitable for a wide range of specimen materials geometry and size with a choice of attachment methods Combined cable cleat and extensometer holder with provision for retaining co...

Page 18: ...ied See Figure 1 1 Extensometer 2 Cable cleat and extensometer holder 3 1 5 mm hexagon wrench 4 11 pairs of wire clips 5 Specimen centering stops 6 This manual 7 Calibration certificate 8 Foam lined c...

Page 19: ...pplied 19 Product Support www instron com Figure 1 Case Layout Case Manual Extensometer Cable Cleat and Extensometer Holder Hexagon Wrench Clips for Round Specimens Clips for Rectangular Specimens Spe...

Page 20: ...Chapter Introduction 20 M20 52630 1 EN...

Page 21: ...bout Preparation Preparation for testing comprises Configuring the extensometer with the correct sized clips changing the knife edges to suit the specimen and setting the specimen stops if required At...

Page 22: ...Configuring the Extensometer Fitting Wire Clips Clips are available in two profiles to accommodate round and rectangular specimens It is important for good results to select the clip that best suits...

Page 23: ...g the technique shown in Figure 2 Figure 3 shows the wire clip in operation holding the extensometer to a typical specimen Once the wire clip is selected and a test specimen is correctly installed in...

Page 24: ...entering Stops Precise alignment of the extensometer is necessary to ensure the correct measurement of strain in a specimen and to enable rapid precise attachment to the specimen To achieve this a pai...

Page 25: ...xtensometer on the specimen are done at the same time but are described as two sections in this text Gauge Length Setting Before strain can be accurately measured the extensometer arms must be spaced...

Page 26: ...nd buttons with index finger and thumb of either left or right hand 2 Ensure the cone locates in the cone seat The extensometer knife edges are now held at the correct gauge length The Figure 6 Gauge...

Page 27: ...www instron com extensometer is ready for attaching to a test specimen see Figure 6 and Figure 7 Verification of gauge length may be confirmed by engaging the gauge length Figure 7 Gauge Length Settin...

Page 28: ...es press too firmly into the specimen A sign of excessive knife edge pressure is breaking of the specimen at the knife edge point of contact At the other extreme with low knife edge pressure slippage...

Page 29: ...s the possibility of marking the specimen 1 Hold the extensometer with either hand and engage the gauge length cone latch 2 Using the other hand open the wire clips to clear the specimen as shown in F...

Page 30: ...s not held firmly onto the specimen select a smaller clip Mounting to the Specimen using One Hand Single handed installation is useful for working in temperature cabinets where access is limited 1 Hol...

Page 31: ...so the knife edges gently touch the specimen Do not slide the knife edge against the specimen as the specimen may be marked or the knife edge blunted 5 Once the extensometer is attached to the specime...

Page 32: ...c bands or O rings around the specimen and loop the ends over the two knife edge hooks as shown in Figure 10 Variable Pressure Specimen Clamp If preferred the instrument may be changed to use variable...

Page 33: ...above the knife edges of the extensometer 3 Press the clamp against the specimen to compress the spring loaded plunger and hook the specimen clamp on the knife edges Ensure that the knife edge seats p...

Page 34: ...libration The extensometer and machine conditioning electronics must be calibrated before use Three parameters must be defined full scale calibration point and gauge length Three methods of calibratio...

Page 35: ...achine is unable to use the self identifying feature or if you wish to modify the calibration parameters To operate manual electrical calibration refer to the operating instructions or user s guide su...

Page 36: ...alibration and appropriate calibration fixtures Verification The achievable ISO or ASTM classification is given in Gauge Lengths and Travel on page 48 Certification of the strain measurement system wh...

Page 37: ...d moisture Depending upon the testing conditions and frequency of use Clean your extensometer by wiping it with a dry lint free cloth Inspect the knife edges for wear or damage and replace as appropri...

Page 38: ...details Extensometer Holder A combined cable cleat and extensometer holder is provided and is shown in Figure 12 and Figure 13 The magnetic base of the cleat can be attached to steel parts of the tes...

Page 39: ...connected to the testing machine it may be secured to a cleat post using the hole provided in the extensometer cover Ensure the cleat is returned to the protective case with the magnet attached to the...

Page 40: ...Chapter Preparation for Testing 40 M20 52630 1 EN Figure 13 Extensometer Suspended from Cleat Post Steel Covered Machines Slot for Cable Attach to Steel Surface...

Page 41: ...the extensometer see Chapter 2 you can perform a test on your specimen Refer to your system operating instructions for details on how to run a test Your extensometer can be used for measurement or mo...

Page 42: ...r is securely attached to the specimen Ensure that the extensometer is calibrated Set Position Load and Strain limits Hazard The test machine may become unstable in strain control if the extensometer...

Page 43: ...ameters are set correctly Warning Before attaching or removing the extensometer from the specimen Ensure that the machine is not in strain control Apply specimen protect or load protect if your system...

Page 44: ...Chapter Testing 46 M20 52630 1 EN...

Page 45: ...47 Product Support www instron com Appendix A Specifications Gauge Lengths and Travel 48 System Compatibility 50 General Specifications 52 Environmental Conditions 53...

Page 46: ...52 2 58 2 3 69 2 7 Width 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 39 1 5 Length 67 2 64 67 2 64 67 2 64 67 2 64 67 2 64 67 2 64 100 4 115 4 5 132 5 2 100 4 115 4 5...

Page 47: ...ce g lbs 45 0 1 45 0 1 37 0 08 45 0 1 45 0 1 37 0 08 37 0 08 60 0 13 45 0 1 37 0 08 Overall Dimension mm in Height 72 2 8 72 2 8 72 2 8 72 2 8 72 2 8 72 2 8 101 4 101 4 101 4 121 4 8 Width 39 1 5 39 1...

Page 48: ...ration Not Available Single Code Only All except 2630 119 120 121 122 123 All Not Available All All All All Automatic Electrical Calibration All Single Code Only All except 2630 119 120 121 122 123 Al...

Page 49: ...23 All All except 2630 120 121 122 123 All All Machine series 4200 4300 CPU card with PROMs A474 717 718 719 720 4200 4300 CPU card with PROMs A474 736 737 738 739 or later 2180 2160 1100 4400 4400 PR...

Page 50: ...ature range 100 to 200 C Temperature effect on zero 0 005 C Effect of Temperature on sensitivity C 0 006 20 to 100 C typical C 0 008 100 to 150 C typical C 0 01 150 to 200 C typical C Method of attach...

Page 51: ...h relative humidity may alter calibration and it is advisable to confirm the calibration using a suitable calibration fixture at the test condition Caution Contamination by condensation electrically c...

Page 52: ...ambers Chamber Cat No Suitable Extensometers 3119 005 3119 405 All except 2630 113 2630 116 2630 118 and 2630 119 3119 006 3119 406 3119 506 All except 2630 113 2630 116 2630 118 and 2630 119 3119 007...

Page 53: ...ble pressure specimen clamps See page 32 for how to use the clamp and page 58 for clamp sizes Cat No 2601 077 Replacement knife edges one pair straight profile All purpose use on round and rectangular...

Page 54: ...n clamps This requires optional notch pivot knife edges to permit the use of specimen clamps Specimen clamps are an optional extra and can be ordered from Instron using the following Catalogue Numbers...

Page 55: ...imum gauge length 25 mm Accommodates round specimens 1 to 15 mm in diameter in diameter or flat specimens to 14 mm wide and 1 to 18 mm thick Cat No 2601 083 Specimen clamp and knife edges Large minimu...

Page 56: ...x Options and Accessories 60 M20 52630 1 EN Clips for Round Specimens SET A1696 1013 Specimen Diameters 0 to 3 mm 0 0 12 in Specimen Diameters 3 to 6 mm 0 12 0 24 in Specimen Diameters 6 to 9 mm 0 24...

Page 57: ...Clips for Round Specimens 61 Product Support www instron com Specimen Diameters 9 to 12 mm 0 35 0 47 in Specimen Diameters 12 to 15 mm 0 47 0 59 in Specimen Diameter 20 mm 0 79 in...

Page 58: ...Appendix Options and Accessories 62 M20 52630 1 EN Clips for Rectangular Specimens SET A1696 1014 0 to 3 mm 0 0 12 in 3 to 6 mm 0 12 0 24 in...

Page 59: ...Clips for Rectangular Specimens 63 Product Support www instron com 9 to 12 mm 0 35 0 47 in 12 to 15 mm 0 47 0 59 in 6 to 9 mm 0 24 0 35 in...

Page 60: ...Appendix Options and Accessories 64 M20 52630 1 EN...

Page 61: ...cessories 57 ASTM E83 48 attaching the extensometer 25 automatic electrical calibration 34 C cable cleat 38 calibration automatic electrical 34 manual electrical 35 manual mechanical 36 care of extens...

Page 62: ...extensometer about 15 attaching 25 care 37 configuring 22 features 16 gauge length 48 holder 38 repair 38 storage 37 travel 48 F features of extensometer 16 fitting to specimen O rings 31 variable pre...

Page 63: ...mechanical calibration 36 mechanical calibration manual 36 mounting to specimen about 28 both hands 29 one hand 30 O optional accessories 57 O rings about 31 spares 58 P preparation for testing 21 R...

Page 64: ...riable pressure 32 58 specimen mounting extensometer 28 specimens clips 60 62 standards ASTM E83 48 ISO 9513 48 storage of extensometer 37 strain control working in 44 system compatibility 50 system v...

Page 65: ...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 66: ...Product Support www instron com...

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