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| 高压pVTt法气体流量标准装置不确定度实现及验证 | |
| 引用本文： | 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. |
| 作者姓名： | 曹培娟 李春辉 崔骊水 张翰 |
| 作者单位： | 1. 中国计量科学研究院, 北京 100029 2. 河北大学, 河北 保定 071002 |
| 基金项目： | 质检公益性行业科研专项(201510003) |
| 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。 |
| 关 键 词： | 计量学 pVTt标准装置 性能验证 流出系数 不确定度 |
| 收稿时间： | 2015-12-30 |
The Verification on the Capability of High Pressure pVTt Standard Facility |
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| CAO Pei-juan,LI Chun-hui,CUI Li-shui,ZHANG Han.The Verification on the Capability of High Pressure pVTt Standard Facility[J].Acta Metrologica Sinica,2017,38(6):697-701. | |
| Authors: | CAO Pei-juan LI Chun-hui CUI Li-shui ZHANG Han |
| Affiliation: | 1. National Institute of Metrology, Beijing 100029, China 2. Hebei University, Baoding, Hebei 071002, China |
| 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. |
| Keywords: | metrology pVTt standard facility performance verification discharge coefficient uncertainty |
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