Abstract
Main text International key comparison on luminous intensity was organized by the Asia Pacific Metrology Programme (APMP), identified as APMP.PR-K3.a, and carried out with coordination by National Metrology Institute of Japan (NMIJ-AIST) as the pilot laboratory. In total, 13 national metrology institutes (NMIs) participated in the comparison. The linkage to the key comparison reference value (KCRV) of luminous intensity scale was provided through the result of the CCPR key comparison, CCPR-K3.a (1999), by NMIJ-AIST and National Institute of Metrology, China (NIM). In the comparison, a group of luminous intensity standard lamps were used as transfer standard lamps. The comparison was organized as star-type comparison (Participant - Pilot - Participant). Luminous intensity scale of each participant was compared with the KCRV through the measurement results of the transfer standard lamps and associated uncertainties, and the relationship with the KCRV were evaluated to declare its international equivalence. All the data analyses were performed in accordance with the CCPR guidelines. This report provides the overview of the comparison, including measurement procedure, transfer standard lamps, data analysis, measurement results of all the participant NMIs and their uncertainties. The final result of the comparison is given as the degree of equivalence (DoE) of the participants obtained based on the difference from the KCRV determined in CCPR-K3.a (1999) and their stated uncertainties. 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 CCPR, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
Published Version
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