1. Metrological performance of diaphragm gas meters with different use age
- Author
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Song Zhang, Jiao Zhan, Xia Li, Li Wu, and Xiaoyuan Deng
- Subjects
0207 environmental engineering ,Energy Engineering and Power Technology ,Diaphragm (mechanical device) ,02 engineering and technology ,flowmeters ,01 natural sciences ,010309 optics ,weighted mean errors ,0103 physical sciences ,temperature 20.0 degc ,020701 environmental engineering ,diaphragm gas meters ,domestic diaphragm gas meters ,diaphragms ,General Engineering ,mandatory initial verification ,Gas meter ,Metrology ,lcsh:TA1-2040 ,legal metrological regulation performance ,Environmental science ,china ,lcsh:Engineering (General). Civil engineering (General) ,time 10.0 year ,indication errors ,Software ,Marine engineering ,weighted mean error calculation - Abstract
According to the current legal metrological regulation of diaphragm gas meter, domestic gas meters in China are required to pass mandatory initial verification at 20°C, and then a 10 years' legal duration is allowed without any subsequent or in-service verifications. Here, experimental study has been implemented to investigate the metrological performance and temperature adaptability of old diaphragm gas meters with different use age. Through the introduction of weighting factors, weighted mean errors are calculated to analyse the correlation between the indication errors of gas meters and their use age, as well as the relationship between the indication errors and test temperatures. Experimental results indicate that the use age of gas meters has negligible influence on their metrological performance during the 10 years' legal duration. However, the indication errors worsen as temperature varies.
- Published
- 2019
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