Final report: SIM regional comparison of ac–dc voltage transfer difference (SIM.EM.K6a, SIM.EM-K9 and SIM.EM-K11)

Abstract

Three comparisons of ac–dc voltage transfer difference held from January to December 2004 are reported. Six NMIs in the SIM region took part: NRC (Canada), NIST (United States of America), CENAM (Mexico), INTI (Argentina), UTE (Uruguay) and INMETRO (Brazil).The comparisons were proposed to assess the measurement capabilities in ac–dc voltage transfer difference of the NMIs in the SIM region. The test points were selected to link the results with the equivalent CCEM Key Comparisons, through three NMIs participating in both SIM and CCEM key comparisons. Additionally, a SIM.EM-Supplementary comparison was proposed, in support of the SIM NMIs' power/energy meter calibration capabilities. One technical protocol and one travelling standard were used, to economize on time and resources.The report shows the degree of equivalence in the SIM region and also the degree of equivalence with the corresponding CCEM reference value. The results of all participants support the values and uncertainties of the applicable CMC entries for ac–dc voltage transfer difference in the Key Comparison Database held at the BIPM.Main text. 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 kcdb.bipm.org/.The final report has been peer-reviewed and approved for publication by the CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

Linking results of key and supplementary comparisons of AC/DC voltage transfer references

“…a at 1 kHz, 20 kHz, 100 kHz, and 1 MHz with using a method similar to that used to linking EUROMET.EM-K6.a to CCEM-K6.a, SIM.EM-K6.a to CCEM-K6.a, and APMP.EM-K6.a to CCEM-K6.a, SIM.EM-K6.1 to CCEM-K6.a [9][10][11][12].…”

Final report on COOMET key comparison of AC/DC voltage transfer references (COOMET.EM-K6.a)

“…We propose that the results COOMET.EM-K6a be linked to CCEM-K6aat 1 kHz, 20 kHz, 100 kHz, and 1 MHz with using a method similar to that used to linking EUROMET.EM-K6a to CCEM-K6a, SIM.EM-K6a to CCEM-K6a, and APMP.EM-K6a to CCEM-K6a, SIM.EM-K6.1to CCEM-K6a [2][3][4][5].…”

Dual-Using an AC-DC Transfer Standard for Determining Current Difference of Precision Shunt

“…The contribution of this work to the body of instrumentation and measurement science is proposing the analytical description of the current distribution at the stages of determining the AC-DC transfer difference of the tested shunt. In particular, a vector diagram was composed for the case of applying the AC-DC transfer standard Fluke 792A used in national metrology institutes [10]- [13] and other leading calibrat ion and measuring laboratories .…”