DEVELOPMENT OF THE 1 kN×m TORQUE STANDARD MACHINE

K. Ohgushi, T. Tojo, A. Furuta

Abstract

Research is being conducted at the National Research Laboratory of Metrology (NRLM), Japan, for the purpose of creating a technical base for a national torque standard and constructing a widely accepted torque traceability system. As part of the research, a torque standard machine of rated capacity 1 kN × m was developed. This machine has a variety of features enabling it to perform precise measurements of torque, including the correction of the lever length due to deadweights loading and an aerostatic bearing in order to minimize torque loss caused by friction at the fulcrum. In this paper, the torque standard machine is outlined.

Keywords

torque standard, torque measurement, lever/mass system

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IMEKO-WC-2000-TC3-P095.pdf

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IMEKO TC

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

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