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Title: Operational Effects That Influence Orifice Meter Accuracy
Author: Darin L. George, Thomas B. Morrow
Source: American Gas Association 2002
Year Published: 2002
Abstract: This paper presents a review of operational problems associated with orifice meters, and the influences of these problems on measurement bias. Many sources of error identified and reported in earlier publications are reviewed, and these historical data are combined with recent data collected at the Gas Technology Institute (GTI) Metering Research Facility (MRF). Examples include orifice plate geometries not specifically addressed by industry standards, characteristics of meter tubes, off-normal flow conditions and errors associated with differential pressure measurements. The paper presents quantitative information that can be used to reduce the costs associated with measurement bias and error in orifice meters.

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