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Title: Guidelines For Measurement Errors Caused By Buckled Orifice Plates
Author: D. L. George, Ph.D.,
Source: American Gas Association 2008
Year Published: 2008
Abstract: This paper documents research on flow measurement errors caused by orifice plates that have undergone permanent, plastic deformation. Tests were performed on orifice plates in both 6-inch and 10-inch diameter line sizes. The plates were flow calibrated in senior orifice fittings flowing natural gas, both before and after being permanently deformed. Results were used to assess measurement error as a function of plate deflection angle, orifice bore diameter, and other critical dimensions. Estimates of the flow measurement error for the bent plates were also predicted using the models published by Jepson and Chipchase (1975), and by Mason, Wilson, and Birkhead (

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