Construction of the acoustic gas thermometer in the range from 79 to 273,16 K

M.Yu. Gavalyan, V.G. Kytin

FSUE “VNIIFTRI”, Mendeleevo, Moscow region, Russia,

Al’manac of Modern Metrology № 4 (28) 2021, pages 28–34

Annotation. The installation of relative acoustic gas thermometry, developed at the FSUE “VNIIFTRI”, is described. The installation, which is designed to reproduce and transmit the units of temperature in accordance with the new definition of kelvin in the temperature range from 79 to 273.16 K, became the part of the State primary standard for the unit of temperature — kelvin in the range from 0.3 to 273.16 K.

Key words: installation, reproduction and transmission of the temperature unit.

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