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Differences in the relation between resistance and temperature of several grades of platinum in the range of 10.8 to 273.16°K

  • Thermotechnical Measurements
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Measurement Techniques Aims and scope

Conclusions

The resistivity characteristic of platinum thermometers of different origins (1.39178≤W100°C ≤1.39251) was studied in the range of 10.8–273.16°K and it was established that Nernst's reduction formula holds in the range of 273-50°K with an error of 0.01° and does not hold at temperatures lower than 50°.

The applicability of Matthiessen's rulemade it possible to suggest a simple method for calibrating and computing temperature, which extends the range of platinum thermometers [1, 2] down to the nitrogen boiling point with an error not larger than the one guaranteed by the ITS calibration method.

The inapplicability of Matthiessen's rule at temperatures below 50°K makes it necessary to adopt a critical approach to various reduction methods [3–8].

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Literature cited

  1. P.G. Strelkov and D.I. Sharevskaya, Izmeritel'naya Tekh, No. 6 (1957).

  2. P.G. Strelkov and D.I. Sharevskaya, Izmeritel'naya Tekh. No. 2 (1959).

  3. Procès-Verbaux CIPM 21 (1949).

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  12. N.A. Brilliantov, V.I. Lin'kov, and P.G. Strelkov, Trudy MGIMIP, (Mashgiz, 1950) Vol. 3.

  13. Standard Table T=f(W) for the temperature range of 10.0–90.19°K (Standartgiz, 1959).

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Authors
  1. D. I. Sharevskaya
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  2. P. G. Strelkov
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  3. A. S. Borovik-Romanov
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  4. D. N. Astrov
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  5. G. Kh. Morozova
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Sharevskaya, D.I., Strelkov, P.G., Borovik-Romanov, A.S. et al. Differences in the relation between resistance and temperature of several grades of platinum in the range of 10.8 to 273.16°K. Meas Tech 3, 598–602 (1960). https://doi.org/10.1007/BF00977722

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  • DOI: https://doi.org/10.1007/BF00977722

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