TORQUE BILATERAL COMPARISON BETWEEN NMISA AND INMETRO

J. Matosse, S. Dlamini, M. Sibisi, R. S. Oliveira, S. P. de Oliveira, J. T. Filho

Abstract

This paper presents the results of a bilateral comparison in torque measurements between NMISA in South Africa and INMETRO in Brazil. For this comparison, NMISA used a 20 kN·m torque comparator machine with a proposed uncertainty of 0.03 % (<i>k</i> = 2) across the entire measuring range. INMETRO used a 3 kN·m lever deadweight standard machine with uncertainty of 0.01 %. The comparison was conducted for both clockwise and counter-clockwise directions. Comparison analysis considered measurement data in the range of 200 N·m to 1 000 N·m. The maximum relative deviation observed for the bilateral is 2 × 10^-4 in both directions.

Keywords

torque; bilateral comparison; comparator machine; relative deviation

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IMEKO-TC3-2022-152.pdf

DOI

10.21014/tc3-2022.152

IMEKO TC

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

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