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Argon Triple Point for Long-Stem SPRTs: Thermal Behavior

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Abstract

A new device for an ITS-90 triple-point-of-argon realization has been designed at LNE-CNAM. It follows the widely used principle of the cryogenic Dewar filled with pressurized liquid nitrogen, but the new construction achieves better temperature stability at the level of the argon cell. A new pressure regulation, controlled directly by a nitrogen temperature measurement, solves the problem of the influence of atmospheric-pressure variations. The paper presents the new device and the thermal tests conducted in order to optimize the pressure regulation.

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References

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Authors and Affiliations

  1. SMD, 16 Bd. Du roi Albert II, 1000, Brussels, Belgium

    M. Dobre

  2. LNE-CNAM, 61, rue du Landy, La Plaine St Denis, 93210, France

    I. Didialaoui & Y. Hermier

Authors
  1. M. Dobre
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  2. I. Didialaoui
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  3. Y. Hermier
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Correspondence to M. Dobre.

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Dobre, M., Didialaoui, I. & Hermier, Y. Argon Triple Point for Long-Stem SPRTs: Thermal Behavior. Int J Thermophys 32, 1573–1580 (2011). https://doi.org/10.1007/s10765-011-1039-2

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  • DOI: https://doi.org/10.1007/s10765-011-1039-2

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