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IMPLEMENTATION OF THE INTERNATIONAL TEMPERATURE SCALE OF 1990 BELOW 273.16 K AT IMGC.

Author(s) : PAVESE F., STEUR P. P. M.

Summary

SETTING THE NEW INTERNATIONAL TEMPERATURE SCALE, ISSUED IN 1990, REQUIRED EXTENSIVE RESEARCH WORK FROM ALL METROLOGICAL LABORATORIES, INCLUDING THE ISTITUTO DI METROLOGIA < G. COLONNETTI > (IMGC) OF THE NATIONAL RESEARCH COUNCIL OF THE MAIN FEATURES OF THE ITS-90 IMPLEMENTATION AT IMGC BELOW 273. 16 K ARE DESCRIBED. THE SEALED-CELL TECHNIQUE, DEVELOPED AT IMGC FOR THE REALIZATION OF THE LOW TEMPERATURE FIXED POINTS (TRIPLE POINTS OF GASES), IS USED ABOVE 25 K. BELOW 25 K, THE INTERPOLATING GAS THERMOMETER IS BEING IMPLEMENTED USING HELIUM 3 AS A THERMOMETRIC SUBSTANCE AND, LATER, A CRYOGENIC PRESSURE TRANSDUCER.

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Details

  • Original title: IMPLEMENTATION OF THE INTERNATIONAL TEMPERATURE SCALE OF 1990 BELOW 273.16 K AT IMGC.
  • Record ID : 1992-1557
  • Languages: English
  • Source: New challenges in refrigeration. Proceedings of the XVIIIth International Congress of Refrigeration, August 10-17, 1991, Montreal, Quebec, Canada.
  • Publication date: 1991/08/10
  • Document available for consultation in the library of the IIR headquarters only.

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