The high pressure close loop gas flow standard facility in NIM |
|---|
| Chi Wang, Chunhui Li, Ming Xu, Wencan Yan |
- Abstract:
- The first high pressure close loop gas flow facility in China was built in NIM at the end of 2014. The 4 sets of Dn 100 turbine meters were used as the reference meters in the facility. The flow range is within (40~1300) m³/h, while the pressure range is within the (190~2500) kPa. The turbine meter is a kind of velocity type flow meter, which is easily affected by installation. To avoid the installation effect, the reference meters were designed to be calibrated in “original position” without dismounted. To decrease the pressure measurement uncertainty, there is an absolute pressure instrument in the manifold in the upstream of the reference meters, the differential pressure transducers were used for the reference meter and meter under test (MUT). The expanded uncertainty of meter factor for MUT is 0.20% (k = 2). The uncertainty of the close loop facility was verified with a comparison between the sonic nozzle facility and close loop facility, in which one Dn 100 turbine meter was chosen as the transfer meter. On the base of the good consistency of the comparison results, the uncertainty and the measurement capability of the close loop facility were verified.
- Download:
- IMEKO-TC9-2019-021.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