ASTM E2428-2008
验证扭矩试验机力矩指示用扭矩测量仪校准的标准实施规程

Standard Practice for Calibration of Torque-Measuring Instruments for Verifying the Torque Indication of Torque Testing Machines

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标准号

ASTM E2428-2008

发布日期

2008年

实施日期

废止日期

无

中国标准分类号

N13

国际标准分类号

19.100 (Non-destructive testing)

发布单位

US-ASTM

适用范围

Testing machines that apply and indicate torque are in general use in many industries. Practice WK6364 has been written to provide a practice for the torque verification of these machines. A necessary element in Practice WK6364 is the use of devices whose torque characteristics are known to be traceable to national standards. Practice E 2428 describes how these devices are to be calibrated. The procedures are useful to users of torque testing machines, manufacturers and providers of torque measuring instruments, calibration laboratories that provide calibration services and documents, and service organizations using devices to verify torque testing machines.

1.1 This practice is to specify procedure for the calibration of elastic torque-measuring instruments.

Note 18212;Verification by deadweight and a lever arm is an acceptable method of verifying the torque indication of a torque testing machine. Tolerances for weights used are tabulated in Practice WK6364; methods for calibration of the weights are given in NIST Technical Note 577, Methods of Calibrating Weights for Piston Gages.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This practice is intended for the calibration of static or quasi-static torque measuring instruments. The practice is not applicable for high speed torque calibrations or measurements.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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