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Title: Correcting Instruments Applied To Displacement And Turbine Gas Meters
Author: Thomas R. Comerford, Jr.
Source: 1980 International School of Hydrocarbon Measurement
Year Published: 1980
Abstract: Displacement and turbine gas meters provide an extremely accurate measure of the actual volume of gas consumed at the meter. If the density of the gas is also known at the meter, then the volume measured can be corrected to useful mass terms or to equivalent volume or standard volume for equitable contract billing. Correcting instruments calculate the density of the gas at the meter and directly modify the output frequency of the meter to provide a totalized reading in corrected contract volume. This effectively converts a volume meter into a mass meter. In order to understand how to best apply and use correcting instruments, we will discuss the details of how pressure and temperature measurements are used to provide correction of volume to mass. Dont let the details obscure the simplicity of what is being accomplished

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