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Realization of Helium-4 vapour pressure temperature scale by using an absolute pressure transducer.

[In Japanese. / En japonais.]

Author(s) : TAMURA O., MORII N.

Type of article: Article

Summary

The authors realized a Helium-4 vapour pressure temperature scale between 2.25 K and 4.25 k according to the International Temperature Scale of 1990 using an absolute pressure transducer. The pressure measurement system is much simpler than the conventional precision pressure measurement system using a pressure balance and a differential pressure transducer simultaneously. Standard-type rhodium-iron resistance thermometers were calibrated against the realized scale. The combined standard uncertainty of the calibration is estimated to be less than 0.1 mK, including the uncertainty of scale realization, resistance measurement, and the residuals of the third-order polynomial fitting equation.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2002-2787
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 36 - n. 7
  • Publication date: 2001
  • Document available for consultation in the library of the IIR headquarters only.

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