Report on the comparison of the calibration of noble metal thermocouples from 419 ºC up to 1100 ºC (EURAMET.T-S5)
Abstract
An International Comparison on the calibration of noble metal thermocouples from 419 °C up to 1100 °C has been carried out among the National Metrology Institutes (NMIs) of Spain, FYR Macedonia and Chile. Measurements were performed from March 2016 to June 2017. One type R thermocouple circulated between the participants that was calibrated by using fixed points or by comparison, depending of the capabilities of the laboratories. The Centro Español de Metrología (Spanish NMI), CEM, acted as the pilot laboratory providing the reference value of the comparison.
The thermocouple shown an acceptable behavior throughout the comparison, with no critical deterioration of its homogeneity and a maximum drift lower than 2 μV in the worst case. The results of the comparison were quite satisfactory. The three institutes are compatible with a coverage factor k= 2 in all the calibration points and in the case of aluminum and zinc they are even compatible for a coverage factor k = 1. This report presents the results of this comparison and provides detailed information of the measurements performed by the participating laboratories. 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:
-
Metrologia
- Pub Date:
- January 2019
- DOI:
- 10.1088/0026-1394/56/1A/03002
- Bibcode:
- 2019Metro..56.3002D