Realization of the triple point of carbon dioxide in a transportable cell using long-stem SPRTs

Correction Instruments & Instrumentation

Realization of the triple point of carbon dioxide evaluated by the ITS-90 (vol 57, 015004, 2020)

Yasuki Kawamura et al.

METROLOGIA (2021)

Article Instruments & Instrumentation

ITS-90 reproducibility, xenon fixed point substitution and new interpolating equations between 13.8033 K and 273.16 K

P. M. C. Rourke

Summary: The study quantifies the lack of reproducibility of the ITS-90 using a low-uncertainty data set, finding that the current guidance overestimates scale realization uncertainties. Recommendations include replacing the deviation function and calibrating thermometers at a different triple point to improve scale reproducibility. Additional linear subranges could be added without compromising existing performance, providing a basis for a much more reproducible temperature scale than the ITS-90.

METROLOGIA (2021)

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Article Thermodynamics

Effects of Isotopes on the Triple Points of Carbon Dioxide and Sulfur Hexafluoride

Yu Liang et al.

Summary: This study investigates the isotopic effects of carbon dioxide and sulfur hexafluoride on their triple point measurements. The temperature corrections for CO2 TP show a narrow variation, resulting in minor inconsistencies, while for SF6 TP, the predicted temperature corrections range widely, indicating a need for further investigation.

INTERNATIONAL JOURNAL OF THERMOPHYSICS (2021)

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Article Instruments & Instrumentation