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Title: Effects Of Abnormal Conditions On The Accuracy Of Orifice Measurement
Author: Taft Snowdon
Source: 1990 International School of Hydrocarbon Measurement
Year Published: 1990
Abstract: The orifice meter remains the foremost measurement device used in the industry for hydrocarbon flow. The primary element of the orifice meter is the orifice plate and orifice meter tube Consisting of the orifice fitting, or flanged pressure taps, adjacent piping and the flow conditioner or straightening vanes. The complete system also includes the temperature and pressure measuring devices used often called the secondary element and the pressure lines from the taps to the pressure instruments. The American National Standard Institute/American Petroleum Institute Standard 2530 (ANSI/API 2530) also called the AGA-3, provides specific recommendations for the manufacture, inspection and installation of an orifice meter. In order to insure accuracy, with minimum uncertainty, these guidelines and inspection procedures should be adhered to. Most of these specifications can be established by taking relatively fundamental measurements of the primary element components.

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