INTER-LABORATORY COMPARISON OF REFERENCE TORQUE WRENCH CALIBRATION BETWEEN NMIJ AND PTB IN THE RANGE OF FROM 200 N·m TO 2 kN·m

Koji Ogushi, Atsuhiro Nishino, Koji Maeda, Kazunaga Ueda, Andreas Brüge, Dirk Röske

Abstract

Inter-laboratory comparison of reference torque wrench calibration was conducted between NMIJ and PTB using a torque transducer in the form of a torque wrench, "TTS/3kNm", as a transfer device. Although the rated capacity of the transducer is 3 kN·m, the calibration range of from 200 N·m to 2 kN·m was selected. Each loading time schedule used in daily calibration was also adopted in this comparison. Calibration results obtained by both laboratories coincided with the range of uncertainties.

Keywords

torque, torque wrench, reference torque wrench, comparison, square drive

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IMEKO-WC-2012-TC3-O32.pdf

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IMEKO TC

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

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