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RESEARCH PAPERS: Additional Technical Papers

Statistical Improvement in Differential Producer Type Flowmeters

[+] Author and Article Information
V. P. Head

Fischer & Porter Co., Warminster, Pa.

J. Fluids Eng 99(1), 249-255 (Mar 01, 1977) (7 pages) doi:10.1115/1.3448533 History: Received July 29, 1976; Online October 12, 2010

Abstract

First steps have been taken to demonstrate the feasibility of reducing uncertainties in the use of differential producers. Given a suitable flow conditioner, discharge coefficients are shown to be a highly reproducible function of approach length L/D. In the case of venturis and throat-tap flow nozzles, large effects of excessively small pressure tap diameter ratio δ/d are demonstrated and correlated, and much of the scatter and the premature roll-off of the coefficient with decreasing Reynolds number are thus accounted for. Some influence of throat length ratio x/d upstream of a throat tap is shown.

Copyright © 1977 by ASME
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