Report on the CCM.T-K2.1 Key Comparison, Measurand Torque: 10 kN∙m and 20 kN∙m, Final Report

Abstract

Main textThe comparison of torque in the range of 10 kN m and 20 kN m was organized and conducted between two laboratories, the National Metrology Institute of Japan (NMIJ) in the National Institute of Advanced Industrial Science and Technology (AIST) in Japan, and the National Metrology Institute of South Africa (NMISA) in South Africa. This comparison aims to link the national torque standards in South Africa to CCM.T-K2 so that NMISA can achieve the degree of equivalence (DOE) of the CMCs of its torque standards. NMIJ, which had joined CCM.T-K2 key comparison in 2008, played a role of a link laboratory. The results of this comparison showed a good agreement in the NMISA's results with the KCRV.To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).