Force Key Comparison CCM.F-K2.a.2 - Final Report

Main text This report describes CIPM Key Comparison CCM.F-K2.a.2, for force values of 5 kN, 10 kN, 20 kN, 50 kN, 100 kN, and 200 kN. The work is a bilateral key comparison between NPL and PTB, comparing PTB's new 200 kN deadweight force standard machine with NPL's 120 kN and 1.2 MN deadweight force standard machines. The results at 50 kN and 100 kN are linked to the KCRVs determined in CCM.F-K2.a via NPL's 120 kN machine and demonstrate that the PTB results are consistent with their uncertainty claims. 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).