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| Analysis of the Influence of the Size and Installation for Temperature Measuring Elements on the Calibration of CFV Nozzle Standard |
| LIU Zhe1,2,3, ZHANG Fu-yuan1,2, SONG Chao-fan1,2, LI Zhen-lin3 |
1.Nanjing Branch of National Station of Petroleum & Natural Gas Flow Measurement, Nanjing, Jiangsu 210058,China
2.Guangzhou Branch of National Station of Petroleum & Natural Gas Flow Measurement, Guangzhou, Guangdong 510940, China
3.China University of Petroleum-Beijing,Beijing 102249,China |
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Abstract In order to further verify the influence of temperature measuring element size and installation position on nozzle measurement data, the calibration data of nozzle standard device in station A, station B and station C were selected for comparative analysis with the standard value calculated by JJG 620, and the least square method was used for regression verification. The results show that the processing and installation of the temperature measuring elements should meet the requirements of JJG 620—2008 and GB/T 21188—2007, and the nozzle that does not meet the requirements of the temperature measuring elements should be used in the calibration range, not extended.
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Received: 20 September 2019
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2019, Vol. 40 
