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Title: Measurement Uncertainty Analysis Of A High-Pressure Natural Gas Mass-Time Standard System
Author: Ming-Chang Guo Bo Yang Steve Caldwell Iunn-Haur Shaw Fong-Ruey Yang
Source: 2014 South East Asia Flow Measurement Conference
Year Published: 2014
Abstract: This paper presents the construction and working pr inciple of a high-pressure natural gas gravimetric ( mt method) primary system in China. A detailed resear ch and analysis on the key factors influencing operation, and thus the measurement uncertainty of the system, as well as way to improv ed measurement accuracy, will be discussed. The mt primary standard has passed the Examination of Mea surement Standard by Chinese government administrative depar tment in the beginning of 2012. Its measuring range is (0.18.0)kg/s and the expand ed uncertainty is 0.1%. Through comparison of technical specifications of various h igh-pressure systems under operation around the world, it shows the present sy stem has reached international recognized level, in terms of operation range and c laimed uncertainty

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