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Title: Chart And Mechanical Correcting Devices For Displacement And Turbine Meters
Author: Alvin C. Casto
Source: 1983 Appalachian Gas Measurement Short Course
Year Published: 1983
Abstract: The measurement of volumes of natural gas flowing through positive displacement meters can be accomplished by the use of various instruments. One instrument, the direct driven integrator, automatically provides gas volumes corrected for temperature, pressure, pressure-temperature, or pressure-temperaturesupercompressibility. This instrument is designated direct driven because it is driven directly by the wriggler of the meter on which it is mounted. The cams, gears, linkage and counters are operated by the force provided by gas flowing through the meter. The pressure and temperature of the same flowing gas operate the pressure and temperature elements respectively in the integrator which automatically applies a volume correcting factor for pressure and temperature and supercompressibility.

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