STUDY ON REFERENCE TORQUE WRENCH TESTED BY DEADWEIGHT TORQUE STANDARD MACHINE

H. Cheng, J. Z. Yao, W. B. Wen, B. H. Ma, W. J. Huang

Abstract

The reference torque wrench is usually calibrated and verified on the reference torque standard machine, then traceability to the deadweight standard machine. This paper describes the method of directly calibrating and verifying the reference torque wrench on the deadweight torque standard machine. Specially tool and adapters are designed, the arm length can be adjusted, and the installation position can be changed according to needs, which fully meets the requirements of German DKD-R 3-7 and Chinese calibration guideline JJG 1103:2014. The differences and similarities between Chinese and German calibration methods are also compared and discussed.

Keywords

reference torque wrench; JJG 1103:2014; traceability of reference torque wrench

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IMEKO-TC3-2022-060.pdf

DOI

10.21014/tc3-2022.060

IMEKO TC

TC3 - Measurement of Force, Mass, Torque, and Gravity

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