AFRIMETS.EM-S2: comparison on digital multimeter for DC voltage, DC current, DC resistance, AC voltage and AC current parameters

Main text During the 13 th intra-Africa metrology system (AFRIMETS) technical committee on electricity and magnetism (TCEM) meeting held on 8 th to 9 th of July 2019 at Giza, Egypt, a supplementary comparison was approved on a digital multimeter. The primary aim of the comparison is to support the calibration measurement capabilities of the national metrology institutes in measuring DC voltage, DC current, DC resistance, AC voltage and AC current parameters. The National Institute of Standards, Egypt (NIS) piloted the comparison and National Metrology Institute of South Africa (NMISA) provided the comparison reference values and eight AFRIMETS national metrology designated institutes participated. The comparison commenced in January 2020 and completed in August 2021. This report describes the behaviour of the comparison standard, participants reported corrections and calculated comparison reference values with associated uncertainties of measurements at 95% confidence level, normalized errors and degrees of equivalence. 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 CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).