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Title: Fundamental Principles Of Orifice Meters
Author: Donald C. Peters
Source: 1982 International School of Hydrocarbon Measurement
Year Published: 1982
Abstract: An Orifice Meter is a velocity method of gas metering involving the measurement of a differential pressure from which the rate of gas flow is calculated utilizing certain other data and based upon well-established physical principles. The differential pressure that is measured is usually created, in a pipe, by an orifice. The orifice being a Chin flat metal disc having an accurately machined circular hole at its center. The orifice plate is centered perpendicular in a smooth straight section of pipe utilising a pair of flanges or other orifice plate holding device. It is customery to consider a complete orifice meter measuring system as being composed of three major elements: The Primary Element, The Secondary Element and The Calculation of the Rate of Flow.

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