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Title: The New ANSI/API 2530/A.G-A- Report No, 3 Part 4: Implementation Procedure
Author: T. A. Coker, D. L. Embry
Source: American Gas Association 1990
Year Published: 1990
Abstract: The purpose of Part IV of the proposed revisions to A.G.A. Report Number 3 is to outline the procedure to be followed when a computer program that calculates gas flow through an orifice meter is being developed. The implementation procedure presented in this standard serves the following purpose: It defines the precision of all variables used in the calculation of either mass or volumetric flow rate. It structures the calculations for a standardized solution procedure. It demonstrates a practical solution technique for either mass or volumetric flow rate. A computer program for determining gas flow through an orifice meter developed in compliance with this implementation procedure will produce results that agree within 50 parts per milUon to results calculated by any other similar program. This paper presents background information on the development of the implementation procedure, including the selection of the rounding rules, the iterative technique, the precision criteria, and the formulation of the equations.

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