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Title: The Advantages Of Venturi Nozzles Working At Critical Flow In Metrology Of Gas Flow Under Pressure And Application To Gas Metering
Author: F Vulovic, J.P. Vallet
Source: 2002 International Symposium on Fluid Flow Measurement
Year Published: 2002
Abstract: This communication presents the experience feedback of Gaz de France and of CESAME LNE Ouest on the use of venturi nozzles working at critical flow (or sonic nozzles) as transfer standards for the flow metering of gases under pressure, in addition to the recent developments effected on this type of standard. The means of calibration implemented in each laboratory for connecting the sonic nozzles are described, as are the secondary benches on which the regulatory gas meter tests are performed.

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