Abstract
Systems for realizing the fixed points of the ITS-90 for calibrating column and capsule standard platinum thermometers, namely, the triple points of argon and mercury and the melting point of gallium, are constructed and investigated. The errors of the values of the metrological characteristics of the systems obtained enable one, using platinum resistance thermometers, to reproduce and transfer the temperature scale in the 83.8–302.9 K range. The extended uncertainty in reproducing the temperatures of the fixed points does not exceed 0.4 mK.
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References
H. Preston-Thomas, Metrologia, 27, No. 1, 3 (1990).
Suppl. Inform. for ITS-90, Sevres (France): BIMP (1990).
Guide to the Expressison of Uncertainty in Measurements, ISO, Geneva (1992).
R. D. Hill et al., Metrologia, 42, No. 1A, Pt. 1 (Tech. Suppl. 2005). 03001.
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This paper has been prepared from the contributions presented at the 3rd All-Russia Conference “Temperature 2007”; see the selection of papers in Measurement Techniques, Nos. 8 and 9, 2007.
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Translated from Izmeritel’naya Tekhnika, No. 11, pp. 26–31, November, 2007.
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Razhba, Y.E., Razhba, I.A. Apparatus for realizing the ITS-90 in the temperature range from the triple point of argon to the melting point of gallium. Meas Tech 50, 1165–1173 (2007). https://doi.org/10.1007/s11018-007-0217-x
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DOI: https://doi.org/10.1007/s11018-007-0217-x