SIM comparison of AC-DC current transfer difference, SIM.EM-K12

A key comparison of the AC-DC current transfer difference has been carried out by the Inter-American Metrology System (SIM) Regional Metrology Organization (RMO). Its purpose was to establish an equivalence of AC-DC current transfer difference at 10 mA and 5 A between the national metrology institutes (NMIs), in support of the International Committee for Weights and Measures (CIPM) Mutual Recognition Agreement (MRA). The comparison artifact was a Planar Multijunction Thermal Converter (PMJTC) at 10 mA and a 5 A shunt at 5 A measurements. Six SIM NMIs participated in the comparison as well as NIS, National Institute of Standard of Egypt. Results linking the SIM.EM-K12 to CCEM-K12 show agreement of SIM NMIs to other RMOs.