Comparison of realizations of Re-C fixed points filled and measured at NPL and NRC

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DOIResolve DOI: http://doi.org/10.1063/1.4819645
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleTEMPERATURE: ITS MEASUREMENT AND CONTROL IN SCIENCE AND INDUSTRY, VOLUME 8: Proceedings of the Ninth International Temperature Symposium
Series titleAIP Conference Proceedings; no. 1552
Conference9th International Temperature Symposium on Temperature: Its Measurement and Control in Science and Industry, ITS 2012, 19 March 2012 through 23 March 2012, Los Angeles, CA
ISSN0094-243X
1551-7616
ISBN9780735411784
Pages797801; # of pages: 5
AbstractA Re-C fixed point was filled at the National Physical Laboratory (NPL), UK and its melting temperature compared to a fixed point that had been filled previously at NPL. Both of these fixed points were of the hybrid type and used a purified graphite foil between the sacrificial graphite sleeve and the outer crucible. The melting temperatures of these two fixed points were compared and found to agree within the comparison uncertainties. Another Re-C fixed point was filled at the National Research Council (NRC), Canada. This fixed point was also of the hybrid type but contained carbon-composite sheet as the liner between the sleeve and the outer crucible. The melting temperatures of the fixed point filled at NPL and the one filled at NRC were compared and found to agree within the uncertainties of the comparison. When the ITS-90 temperatures at the Re-C melting point (∼ 2474 °C) measured at NPL were compared to those measured at NRC they were also found to agree within the uncertainties of their respective scales.
Publication date
LanguageEnglish
AffiliationMeasurement Science and Standards; National Research Council Canada
Peer reviewedYes
NPARC number21270708
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Record identifiere3fffc97-f5e5-4900-a03d-3ecea9f96868
Record created2014-02-17
Record modified2016-05-09
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