Present estimates of the differences between thermodynamic temperatures and the ITS-90

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DOIResolve DOI: http://doi.org/10.1007/s10765-011-0922-1
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleInternational Journal of Thermophysics
ISSN0195-928X
Volume32
Issue1-Feb
Pages1225; # of pages: 14
SubjectAnalytic functions; Differences T - T <sub>90</sub>; High-accuracy measurements; International Temperature Scale ITS-90; Primary thermometry; Temperature range; Thermodynamic temperature; Triple point of waters; Measurement theory; Temperature scales; Thermodynamics
AbstractAt the request of the Consultative Committee for Thermometry (CCT), Working Group 4 (WG4) has critically reviewed all available measurements of the differences between thermodynamic and ITS-90 temperatures, (T - T 90), and documented the conversion of older data to the ITS-90. Particular attention has been given to the uncertainties. Based on this review, we provide consensus estimates of T - T 90 for selected measurements from 0.65 K to 1358 K. We provide two analytic functions for T - T 90, one for use from 8 K to the triple point of water (T TPW) and one for use above T TPW. The small discontinuity of the derivative dT 90/d T at T TPW is discussed. We also identify temperature ranges where researchers are encouraged to undertake high-accuracy measurements of T - T 90. © 2011 Springer Science+Business Media, LLC.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for National Measurement Standards
Peer reviewedYes
NPARC number21272015
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Record identifierc6a56052-3163-487b-afed-f7898013914e
Record created2014-05-21
Record modified2016-05-09
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