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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/13493

Title: Effect of errors in pressure tap locations on the discharge coefficient of a flange-tapped orifice plate
Authors: Zedan, M.F.,
Keywords: discharge coefficient, flange taps; orifice plates
Issue Date: 1990
Publisher: Elsevier
Citation: Flow Measurement and Instrumentation Volume 1, Issue 3, April 1990, Pages 141-148
Abstract: The effects of errors in the location of the flange taps on the discharge coefficient of orifice plates have been invesgated experimentally. A specially designed fixture by which it was possible to change upstream and downstream tap locations independently was used to study the effects of errors in each location separately. The effect of plate displacement was investigated by making appropriate changes in both upstream and downstream tap locations. Three orifice plates of β = 0.4, 0.6 and 0.75 were tested. The study covered the effects for 51 mm (2 in) and 102 mm (4 in) meter runs. Full-scale tests were conducted for the 51 mm case while model tests with a scale ratio of 1 : 2 were conducted to simulate the 102 mm (4 in) case. Calibrations were done against a dynamic weigh tank system while differential pressures were measured by a number of D-P cells interfaced with a laboratory computer. The results indicate that the effects of tap location errors exceeding those allowed by the standards are negligible in some instances.
URI: http://hdl.handle.net/123456789/13493
ISSN: 09555986
Appears in Collections:College of Engineering

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