摘要
介绍了中国计量科学研究院新建成的高压pVTt气体流量标准装置,该装置的不确定度为0.06%(k=2),音速喷嘴的流出系数不确定度为0.08%(k=2)。以3支音速喷嘴作为传递标准,对新建高压pVTt标准装置与原有pVTt装置及德国物理技术研究院的气体流量装置进行了比对,比对结果显示了实验装置间具有很好的一致性,并验证了装置的不确定度水平。
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 ~ood a^reement with each other of devices.
出处
《计量学报》
CSCD
北大核心
2017年第6期697-701,共5页
Acta Metrologica Sinica
基金
质检公益性行业科研专项(201510003)
关键词
计量学
pVTt标准装置
性能验证
流出系数
不确定度
metrology
pVTt standard facility
performance verification
discharge coefficient
uncertainty