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Title: Fundamentals Of Gas Turbine Meters
Author: J. L. Pond
Source: 1978 International School of Hydrocarbon Measurement
Year Published: 1978
Abstract: The 50 odd million gas meters, currently in service with the different phases of the United States gas industry, use two basic principles to measure gas volumes. The large majority, comprised of diaphragm and rotary meters, utilizes the positive displacement principle of measurement. In pooitiva displacement measurement, a barrier of some sort is inserted into the gas stream to segregate the unmetered upstream gas from the metered downstream gas. Precisely known volumes of gas are transmitted across this barrier during each cycle of the measuring device. Gear trains are employed to adjust the cycles to desired engineering units. The product or the number of cycles times the volume trapped per cycle is displayed on any of a wide variety of readmit devices as totalised volume at line conditions.

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