Abstract

We present results of a bilateral supplementary comparison, between NPL and CMI, of cryogenic radiometers, using silicon trap detectors as the transfer standard. The comparison was based on the technical protocol of the CCPR-S3 comparison (BIPM Report BIPM-2000/9).The results of this comparison demonstrate agreement between CMI and the CCPR-S3 comparison reference values, in the selected wavelength range, to better than 2.7 parts in 104 with a combined standard uncertainty (k = 1) of 2.2 parts per 104 or better.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 CCPR, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

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