Abstract：The high pressure pVTt gas flow standard facility in National Institute of Metrology(China), the expanded uncertainty of the facility could be 0.06% (k=2), while the expanded uncertainty of discharge coefficient of calibrated sonic nozzle is 0.08% (k=2). The measurement capability of the new pVTt facility was verified with the comparisons among the existed pVTt facility and the gas flow facilities in Physikalisch-Technische Bundesanstalt(Germany) with 3 sonic nozzles as transfer meters.The comparison results show in good agreement with each other of devices.
曹培娟,李春辉,崔骊水,张翰. 高压pVTt法气体流量标准装置不确定度实现及验证[J]. 计量学报, 2017, 38(6): 697-701.
CAO Pei-juan,LI Chun-hui,CUI Li-shui,ZHANG Han. The Verification on the Capability of High Pressure pVTt Standard Facility. Acta Metrologica Sinica, 2017, 38(6): 697-701.
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