Low-Pressure Gas Flow Standard in Russian Federation: Principles, Calibration Techniques, Intercomparisons |
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| I. A. Isaev, V. A. Fafurin, A. V. Mingaleev, A. I. Gorchev, A. B. Yakovlev, O. Yu. Sladovskaya |
- Abstract:
- The article deals with the basics of metrological support of low-pressure gas (air) flow measurements, describes the improved State (National) Primary Standard GET 118-2017 and methods of reproduction and transfer the gas flow rate units implemented in the Russian Federation. The improved GET 118-2017 is a complex of five test rigs that are interconnected by means of the reference sonic nozzles, which received the unit of measure on the initial test rig TR-1 of bell type. For transfer the gas flow rate units to calibratable sonic nozzles from reference sonic nozzles in GET 118-2017 a new comparing method using laminarizers (laminar flow elements) as comparators was developed and patented. The volumetric gas flow rate of the calibratable nozzle is determined by the relative change in the pressure drop on the comparator when the calibratable nozzle and two reference nozzles with nominal flow rates smaller and larger relative to the calibratable value are alternately connected after comparator. The GET 118-2017 on the scientific and technical level corresponds to the modern world achievements and is not inferior in characteristics to the best foreign analogues that is confirmed by the results of international comparisons.
- Download:
- IMEKO-TC9-2019-091.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2019
- Title:
18th International Flow Measurement Conference 2019
- Place:
- Lisbon, PORTUGAL
- Time:
- 26 June 2019 - 28 June 2019