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Title: Pulsation Induced Errors In Flow Measurement
Author: Henry W. Poellnitz
Source: 1993 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1993
Abstract: The natural gas transmission industry has historically placed a strong dependence on the orifice meter as the standard for custody transfer measurement. The simplicity, reliability, low maintenance, rangeabtlity, and repeatability of the orifice meter along with the development of reliable secondary systems has eliminated attempts to displace the orifice meter where accurate flow measurement is required. Accuracy of the orifice meter has been a subject of considerable discussion in the last ten years. Recent experimental work to refine and extend the data base for orifice coefficients generally indicates an uncertainty of about *A % under carefully controlled and measured laboratory conditions. Field accuracies of generally 1 % are often quoted. Unfortunately, field errors arising as a result of nonideal fiow conditions are often an order of magnitude larger than those experienced under precise laboratory conditions.

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