G - Physics – 01 – F
Patent
G - Physics
01
F
G01F 25/00 (2006.01) G01F 1/08 (2006.01) G01F 1/12 (2006.01)
Patent
CA 2059355
EXPANSION CHAMBER METHOD AND APPARATUS FOR ELIMINATING ACCURACY ERRORS WHEN TESTING GASEOUS FLOWMETERS ABSTRACT OF THE DISCLOSURE A properly designed expansion chamber is mounted in a flowmeter test equipment configuration to quench or prevent pulsations from resonating the acoustic cavities in the configuration and, thereby, eliminate resonation errors in testing the accuracy of the flowmeter. The invention is particularly though not exclusively adapted to use with a testing configuration including a prover master meter and a conduit connecting the inlet of the prover master meter to the outlet of the gaseous flowmeter being tested. In the practice of the present invention, the pulsation frequencies can be quenched before the acoustic cavity within the conduit can be excited by introducing an expansion chamber at one or both ends of the conduit.
Dresser Industries Inc.
Geery Paul W.
Macrae & Co.
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