Federal Agency
in Technical Regulation and Metrology
FSUE «VNIIFTRI»
Major divisions » Division of physicotechnical measurements №15 » Prospects for the development of hygrometry in the East-Siberian branch »

    Prospects for the development of hygrometry in the East-Siberian branch

    • Improvement of the National primary standard of gas humidity GET 151:

    – reproduction of three highly sought units of gas humidity: relative humidity, molar (volume) part of moisture, dew/frost-point temperature;

    – broadening of measurement range of GET 151;

    – broadening of operating ranges of temperature up to+ 90 0С;

    – control automation of operating process, information collection and processing of GET 151;

    – development of  standard generator of low dew/frost-point temperatures;

    – broadening of operating ranges of temperature up to -70 0С (- 90 0С);

    – mutual comparison  of standard generators of GET 151;

    – productivity boosting of calibration works by three times.

    Modern and perspective characteristics of the National primary standard of  gas humidity  GET 151

    Value

    Year

    Range

    Residual bias

    Relative humidity  j , %

    2008

    5 ÷ 98

    0,1 ÷  0,2

    2010

    5 ÷ 98

    0,02 ÷ 0,2

    Molar part of moisture Xn , mln-1

    2008

    0,6 ÷ 700000

    0,13 ÷ 1,4

    2010

    0,01÷ 700000

    0,13 ÷ 1,5

    Dew/frost point temperature         Td , °C

    2008

    -80 ÷ +90

    0,04 ÷ 0,08

    2010

    -100÷ +90

    0,04 ÷ 0,10

    • Development of generators and investigation of moist gas  properties at high-pressure
    • Development of moist-gas generators for trace concentration
    • Formulation of GSSD in order to measurement assurance of moist process gas qualities
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