Capacity improvement of MT primary standard facility |
|---|
| Wei Han, Can Li, Nan Sun, Chuanbo Zheng, Guanwen Huang, Chaofan Song, Chunhui Li |
- Abstract:
- MT primary standard facility is the highest standard of natural gas metering field in China. In order to improvethe capability level of the facility, the station took a series of measures. By adding a spherical tank insulation layer, changing the sampling position of the chromatograph and so on. After that, a new method was used to re-evaluate the uncertainty of the facility. At the same time, two nozzles were selected to carry out therepeatability and stability test, and the test results met the requirements of uncertainty. Afterall, the uncertaintylevel of the facility is increased from 0.1 % (k = 2) to 0.05 % (k = 2), and the uncertainty of the venturi nozzle outflow coefficient of calibration critical flow is 0.14 %. The capacity improvement work makes the level of the mt primary standard facility improved significantly, and it is very important for the valuation transfer and traceability system.
- Keywords:
- MT primary standard; Uncertainty; Capacity improvement
- Download:
- IMEKO-TC9-2019-083.pdf
- DOI:
- 10.21014/tc9-2022.083
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2022
- Title:
19th International Flow Measurement Conference 2022
- Place:
- Chongqing, CHINA
- Time:
- 01 November 2022 - 04 November 2022