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Title: Comparison Of Low Pressure Gas Flow Standards
Author: Khaled Chahine
Source: Flomeko 2005
Year Published: 2005
Abstract: A Bell prover with 300 L capacity and a 5-tube mercury sealed piston prover are used as gas flow standards at the National Measurement Institute Australia, NMIA. Together they cover a flow range of 0 to 30 m/hr. Modifications were carried out on these two standards to better determine their delivered volumes. Descriptions of these modifications are presented in this paper. Uncertainty analysis of each standard delivered volume is also presented in this paper. Sonic nozzles were used as flow transfer standards to compare the above standards. An uncertainty analysis of the sonic nozzle coefficients and the results of the comparisons are presented.

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