In 2011, a working group of the Consultative Committee for Thermometry published their best estimates of the differences between the thermodynamic temperature T and its approximation (T-90), the temperature according to the International Temperature Scale of 1990, ITS-90. These consensus estimates, in combination with measurements made in accordance with ITS-90, are an important alternative to primary thermometry for those requiring accurate measurements of thermodynamic temperature. Since 2011, there has been a change in the definition of the kelvin and significant improvements in primary thermometry. This paper updates the (T - T-90) estimates by combining and analyzing the data used for the 2011 estimates and data from more recent primary thermometry. The results of the analysis are presented as a 12th-order polynomial representing the updated consensus values for the differences and a sixth-order polynomial for their uncertainty estimates. (C) 2022 Author(s).

2022 Update for the Differences Between Thermodynamic Temperature and ITS-90 Below 335 K / Gaiser, Christof; Fellmuth, Bernd; Gavioso, Roberto M.; Kalemci, Murat; Kytin, Vladimir; Nakano, Tohru; Pokhodun, Anatolii; Rourke, Patrick M. C.; Rusby, Richard; Sparasci, Fernando; Steur, Peter P. M.; Tew, Weston L.; Underwood, Robin; White, Rod; Yang, Inseok; Zhang, Jintao. - In: JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA. - ISSN 0047-2689. - 51:4(2022). [10.1063/5.0131026]

2022 Update for the Differences Between Thermodynamic Temperature and ITS-90 Below 335 K

Gavioso, Roberto M.;
2022

Abstract

In 2011, a working group of the Consultative Committee for Thermometry published their best estimates of the differences between the thermodynamic temperature T and its approximation (T-90), the temperature according to the International Temperature Scale of 1990, ITS-90. These consensus estimates, in combination with measurements made in accordance with ITS-90, are an important alternative to primary thermometry for those requiring accurate measurements of thermodynamic temperature. Since 2011, there has been a change in the definition of the kelvin and significant improvements in primary thermometry. This paper updates the (T - T-90) estimates by combining and analyzing the data used for the 2011 estimates and data from more recent primary thermometry. The results of the analysis are presented as a 12th-order polynomial representing the updated consensus values for the differences and a sixth-order polynomial for their uncertainty estimates. (C) 2022 Author(s).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11696/79583
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