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| The Evaluation of Uncertainty of Mobile Calibration Facility for Natural Gas Meters |
| YAN Wen-can1，XIAO Di2，XU Ming1，LU Yu-cheng1 |
1.SINOPEC Gas Company， Wuhan， Hubei 430073, China;
2.National Station of Petroleum & Natural Gas Flow Measurement， Daqing， Heilongjing 163712, China |
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Abstract According to the 《JJF1059 Evaluation and Expression of Uncertainty in Measurement》, and combining with mobile standard facility of natural gas flow measurement, the uncertainty analysis of standard equipment was made with GUM. Accroding to the traceability requirements, the meters whose uncertainty is no better than 0.33% can be calibrated by GUM. In accordance with the traceability requirements, it can verificate/calibrate the meter which is no better than lecel 1.0. Finally，the evaluation results are verified by compared with Nanjing branch of national station of petroleum & natural gas flow measurement.
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2014, Vol. 35 
