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Title: Fundamentals Of Orifice Metering
Author: Jerry Paul Smith
Source: 1983 Appalachian Gas Measurement Short Course
Year Published: 1983
Abstract: The orifice is one of the oldest known devices for measuring or regulating the flow of fluids. The Romans are credited with using it to regulate the flow of water to householders. Howjpver, the development of the orifice or orifice meter on which the purchase of fluids may be based, took place in the early 1900s. According to the Report of the Joint A.G.A. -A.S.M.E. Orifice Coefficient Committee dated November 1935, there were numerous research projects conducted on the flow of fluids through orifices during the nineteenth century. Just when and where a thin-plate orifice was first used in the measurement of fluids, particularly for sale purposes, has not been definitely determined, but it was probably before 1890. It was about this time that Mr. Forrest M. Towl witnessed orifice meters being used for measuring natural gas in the vicinity of Columbus, Ohio. These particular orifices had been installed and were being used at the suggestion of the late Professor S. W. Robinson of Ohio State University.

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