Measuring Facilities of the East-Siberian branch in hygrometry
Procedures of gas humidity values interconversion developed by the East-Siberian branch of FSUE «VNIIFTRI» allows to transfer sizes of the following units:
|
Value |
Range |
Residual bias |
| Relative Humidity,
j , % |
5 ÷ 98 |
0,1 ÷ 0,2 % |
| Molar part of moisture , Xn , млн-1 |
0,6 ÷ 700000 |
0,13 ÷ 1,4 % |
| Dew/frost point temperature, Td , °C |
-80 ÷ +90 |
0,04 ÷ 0,08 °C |
Standard complex of the East-Siberian branch with regard to gas humidity measurements includes:
– National primary standard of the gas humidity unit GET 151-86
– Reference and working gas humidity standards of the East-Siberian branch
|
Title |
Value of humidity |
Range |
Uncertainty
(expanded uncertainty) |
| UVT-103A-2001 | Molar part of moisture
P=(0,1 ¸ 10,0 )MPa t=(+5 ¸ +60 ) °С |
50 ¸ 10 000 mln-1 |
±0,9 % |
| UVT-2008 | Molar part of moisture
P=(0,1 ¸ 10,0) MPa t=(-1 ¸ -60 ) °С |
0,1 ¸ 6100 mln-1 |
±2,5 % |
| Rodnik-2M | Relative humidity
Volume part of moisture Dew/frost point temperature |
5¸99 %
300¸150 000 mln-1
-33 ¸ +54 °С |
±0,5 %
±1%
±0,1 °С |
| Sever-1 | Dew/frost point temperature
Molar part of moisture |
-70 ¸ +20 °С |
±0,5 °С (+20 ¸ -40 )°С ±0,6 °С (-40 ¸ -70 )°С |
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