Piping Arrangements for Acceptable Flowmeter Accuracy

The author correlates data previously published on metering fluid flow through pipe lines and analyzes the requirements for piping arrangements, according to interpretations developed from many actual field installations. Most of the recommendations given in the literature are based on standards of piping requirements established by the Joint A.G.A.-A.S.M.E. Committee on Orifice Coefficients. These standards as well as others obtained since that report was published in 1935 are shown in this paper in the form of seven schedules covering the use of “Orifices and Flow Nozzles,” and an eighth schedule, applying to “Venturi Tubes” only. These schedules serve as the basis for developing typical piping layouts which are designed to interpret and clarify the principles involved from a practical application standpoint.