ГЭТ 154-2019 (НИЛ 2420)
Standard name:
- ГЭТ 154-2019 State Primary Standard of Units of Molar Fraction, Mass Fraction and Mass Concentration of Components in Gas and Gas Condensate Media
Type of measurement:
- Measurements of the physical and chemical composition and properties of substances
Structural division: name НИО\НИЛ:
- Laboratory of State Standards and Scientific Research in the Field of Gas Analytical Measurements
Guardian Scientist:
- Kolobova Anna Viktorovna
Year of creation:
- 1988
Year of re-confirmation:
- 2019
Operating principle:
The standard's operation is based on a number of physicochemical methods (chromatographic, chromatograph-mass-spectrometric, spectrometric, electrochemical, hygrometric, gravimetric, dynamic gravimetric, magnetomechanical, chemiluminescent, fluorescent, photocolorimetric, volumetric-manometric, and dynamic scale conversion methods) that ensure the reproduction and transmission of units of mole fraction, mass fraction, and mass concentration of components in gas and gas condensate media.
Composition of the standard:
Systems for reproducing units of mole fraction, mass fraction, and mass concentration of components in pure initial gases and substances, in gas and gas condensate mixtures, and in aqueous ethanol solutions;
Systems for transmitting units of mole fraction and mass concentration of components in gas and gas condensate mixtures;
Server – an information system for supporting the operation of reference systems of state primary standards;
System of specialized cylinders and gas processing equipment for the continuous supply of gas to the system systems for their operation.
Main metrological characteristics
| Name of physical quantity, measurement range | Relative СКО, % | Relative non-excluded systematic error, % | Relative standard uncertainty, % | Relative expanded uncertainty (k = 2), % | |
|---|---|---|---|---|---|
| by type A | by type B | ||||
|
Mole fraction of components in: – pure gases and substances,– gas mixtures, – gas condensate mixtures; 1.5 × 10-8 – 99.99999% |
2.4 – 3.0 · 10-7 at n = 10 | 4.4 – 3.0 · 10-6 | 2.4 – 3.0 · 10-7 | 2.3 – 1.6 × 10-6 | 6.6 – 3.3 × 10-6 |
|
Mass fraction of the main substance in pure ethanol and aqueous ethanol solutions 0.010 – 99.99% |
0.20 – 3.0 x 10-3 at n = 10 | 0.29 – 7.6 x 10-3 | 0.20 – 3.0 x 10-3 | 0.15 – 4.0 x 10-3 | 0.5 – 0.010 |
|
Mass concentration of components in gas mixtures 1.0 × 10-6 – 2.0 × 105 mg/m3 |
1.2 – 0.27 for n = 15 | 2.5 – 0.57 | 1.2 – 0.27 | 1.3 – 0.30 | 3.5 – 0.8 |
|
Mass concentration of ethanol in aqueous solutions 0.10 – 6.0 mg/cm3 |
0.20 – 0.10 at n = 10 | 0.29 – 0.21 | 0.20 – 0.10 | 0.15 – 0.11 | 0.5 – 0.3 |
Verification diagram:
- Heads the state verification scheme for measuring instruments for component content in gas and gas condensate environments. Heads the state verification scheme for measuring instruments for ethanol content in gas environments.
Scope of application:
Monitoring of atmospheric air, workplace air, industrial emissions, vehicle emissions, explosive gases and vapors, the quality of commercial gas products, technological processes in various industries, monitoring of ethanol content in exhaled air, etc.
Results of applying the standard:
Not specified
The total number of measuring instruments traceable toк ГЭТ 154-2019:
More than 2 million units.
Ensuring the uniformity of measurements, participation in the CIPM MRA program:
391