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Title: Performance Evaluation Of Orifice Meter Standards For Selected T-Junction And Elbow Installations
Author: Marvin Weiss, Wojciech Studzinski, Joseph Attia
Source: 2002 International Symposium on Fluid Flow Measurement
Year Published: 2002
Abstract: The newly revised orifice meter standards API/ANSI-2530 and ISO-5167 introduce significantly modified meter tube lengths for installations without flow conditioners. However, some of the new recommendations were based on a limited set of data. The purpose of this paper is to provide a performance check for those installations where data were sparse or geometry was limited to a certain range of geometrical parameters. The experiments were conducted in a low-pressure air facility with various types of T-junctions, a mitered 90 elbow, and two 45 elbows in-plane with short spacers. A comparison between baseline data and selected installation configurations indicated that the recommended meter run lengths are sufficient for the majority of -ratios, even for geometric configurations which are outside the specified range of the revised standard. In general, the minimum meter run lengths recommended in the new orifice meter standards are not overly conservative.

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