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Title: Qualification Of Flow Conditioning Devices According To The New API Procedure
Author: Klaus Zanker, Dale Goodson
Source: American Gas Association 1999
Year Published: 1999
Abstract: The new AGA 3/API 14.3 standard on concentric square edged orifice meters suggests that if installation effects can be shown to be less than about 0.23%, then there is no need to apply any additional uncertainty to that of the basic discharge coefficient. This has revived interest in flow conditioners that can assure this performance, without the need for long straight upstream lengths of pipe. A feature of the new standard is that it specifies performance acceptance tests for evaluating other flow conditioners, which were not included in the previous versions of the document. In this paper we will review this procedure, and show results from a device which is being qualified in this manner.

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