SIM.T-K9.1: Canada/Peru bilateral comparison of standard platinum resistance thermometers from 0.01 °C to 419.527 °C
Abstract
The Consultative Committee for Thermometry has organized Key Comparison 9 (CCT-K9) as an updated replacement for CCT-K3. A comparison of the fixed-point temperature standards of Peru with those of Canada was carried out following a protocol that closely resembles CCT-K9. The comparison was limited to the fixed points of tin and zinc, with NRC the pilot laboratory and the eventual link to CCT-K9 (currently, CCT-K9 remains a work in progress). The comparison protocol required INDECOPI to select, characterize, and transport (i.e. hand carry) the SPRTs to NRC. Following the measurements at NRC, the SPRTs were returned and re-measured at INDECOPI to close the loop and assess any changes that occurred in the SPRTs over the course of the measurements. The following degrees of equivalence, D, and expanded uncertainties, U (k = 2), were obtained via this comparison.
T / °C DINDECOPI / mK U / mK 419.527 1.58 4.6 231.928 -2.12 3.9 SIM.T-K9.1 has demonstrated the compatibility of the fixed points of INDECOPI with those maintained by NRC within the combined uncertainties, and therefore serves to verify the intended calibration and measurement capabilities envisioned for INDECOPI, Peru. The results can be linked to NMIs globally following CCT-K9, with NRC as the linking participant. 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 CCT, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).- Publication:
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Metrologia
- Pub Date:
- January 2015
- DOI:
- 10.1088/0026-1394/52/1A/03004
- Bibcode:
- 2015Metro..52.3004H