Supplementary comparison on digital multimeter
Ahmad S. John T. Negi P.S. Budovsky I. Marais L. Leones S.P.B. Hassan N.A. Choon T.S. Yang S. Prinsloo P.J. Maruf A. Tanarom J. Rujirat N. Linh P.T.K. Jargal A. Panga J. Tadros N.N. Sayed R. Alanka R.D.M. Konkanov M. Nurlan S. Sehweil I. Flaifel M. Zaher S.A.
1 January 2023Institute of Physics
Metrologia
2023#60Issue 1
Main text A measurement comparison of DC voltage, DC current, DC resistance, AC voltage and AC current has been carried out among seventeen national metrology laboratories with the travelling standards 6½ digit multimeter (Fluke model 8846A) as Loop A, Loop B and Loop C for the nominal values of the measured parameters DC voltage (100 mV, 1 V, 10 V, -10 V, 100 V and 1000 V), DC current (10 mA and 1 A), DC resistance (100 ω, 1 kω and 10 kω (using 4-wire), AC voltage (100 mV, 1 V, 10 V, 100 V and 700 V at 40 Hz and 1 kHz) and AC current (10 mA and 1 A at 40 Hz and 1 kHz) for establishing the degrees of equivalence among the participating NMIs. This is the final report on the comparison. The report presents the combined results (Loop A, Loop B and Loop C), represented by corrections in measured parameters and the corresponding expanded uncertainties. The combined results from the three loops have been used to calculate the Supplementary Comparison Reference Values, degrees of equivalence di and corresponding uncertainties u(di) of each laboratory that participated in the comparison. 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).
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National Physical Laboratory India, NPLI, India
National Measurement Institute of Australia, NMIA, Australia
National Metrology Laboratory of Philippines, NML-ITDI, Philippines
National Measurement Institute of Malaysia, NMIM, Malaysia
National Metrology Center, NMC A*STAR, Singapore
Standard and Calibration Laboratory, SCL, United States
National Metrology Institute South Africa, NMISA, South Africa
Kalibrasi, Instrumentasi dan Metrologi Indonesia, KIM-LIPI, Indonesia
National Institute of Metrology of Thailand, NIMT, Thailand
Vietnam Metrology Institute, VMI, Viet Nam
Mongolian Agency for Standardization and Metrology, MASM, Mongolia
National Institute of Standards and Industrial Technology of Papua New Guinea, NISIT, Papua New Guinea
National Institute for Standards of Egypt, NIS, Egypt
Standard and Services Department of Sri Lanka, Measurement Units, MUSSD, Sri Lanka
Kazakhstan Institute of Metrology, KazInMetr, Kazakhstan
Jordan National Metrology Institute, JNMI, Jordan
National Standards and Calibration Laboratory of Syria, Syrian Arab Republic
National Physical Laboratory India
National Measurement Institute of Australia
National Metrology Laboratory of Philippines
National Measurement Institute of Malaysia
National Metrology Center
Standard and Calibration Laboratory
National Metrology Institute South Africa
Kalibrasi
National Institute of Metrology of Thailand
Vietnam Metrology Institute
Mongolian Agency for Standardization and Metrology
National Institute of Standards and Industrial Technology of Papua New Guinea
National Institute for Standards of Egypt
Standard and Services Department of Sri Lanka
Kazakhstan Institute of Metrology
Jordan National Metrology Institute
National Standards and Calibration Laboratory of Syria
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