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Title: Fundamentals Of Rotary And Turbine Meters
Author: Joseph L. Pond
Source: 1983 Appalachian Gas Measurement Short Course
Year Published: 1983
Abstract: The 50 million gas meters currently in service with the different phases of the gas industry in the U.S., plus the majority of a similar number of meters installed elsewhere in the World, use two different physical principals to measure gas volumes. In positive displacement measurement, a barrier of some sort is inserted in the gas stream to separate the unmetered upstream gas from the metered downstream gas. Precisely known volumes of gas are transported across this barrier during each cycle of the measuring device. Adjustments are employed to calibrate the volume per cycle to desired engineering units. The product of the volume trapped per cycle times the number of cycles is displayed on any of a wide variety of readout devices as totalized volume at line conditions.

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