ASTM E2309-05

Standard Practices for Verification of Displacement Measuring Systems and Devices Used in Material Testing Machines

1.1 These practices cover procedures and requirements forthe calibration and verification of displacement measuringsystems by means of standard calibration devices for static andquasi-static testing machines. This practice is not intended tobe complete purchase specifications for testing machines ordisplacement measuring systems. Displacement measuringsystems are not intended to be used for the determination ofstrain. See Practice E 83.
1.2 These procedures apply to the verification of the displacementmeasuring systems associated with the testingmachine, such as a scale, dial, marked or unmarked recorderchart, digital display, etc. In all cases the buyer/owner/usermust designate the displacement-measuring system(s) to beverified.
1.3 Since conversion factors are not required in this practice,either SI units, or inch units, can be used as the standard.
1.4 Displacement values indicated on displays/printouts oftesting machine data systems—be they instantaneous, delayed,stored, or retransmitted—which are within the Classificationcriteria listed in Table 1, comply with Practices E 2309.
1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appropriatesafety and health practices and determine the applicabilityof regulatory limitations prior to use.