A.A. Anashko, A.F. Vinge, M.A. Vinge, S.A. Morozov

Al’manac of Modern Metrology № 4 (12) 2017, pages 81–91

The state primary standard of gas humidity units. The measurement methods and measurement sets of primary national standard of units relative humidity, mole fraction and dew-point temperature of gases are presented. Metrological behaviors of standard and its results of international key comparison CCT-K6 are given.

Key words: primary standard, humidity of gases, relative humidity, molar fraction, dew point temperature, two pressure method, phase equilibrium method.

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