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Title: Temperature Compensation Ten Years Later
Author: Paul C. Hittle
Source: American Gas Association 1970
Year Published: 1970
Abstract: Development of the temperature-compensated diaphragm gas meter, a little more than a decade ago, was prompted by the desire of measurement men to measure accurately volumes of gas subject to wide temperature variations. The uncompensated diaphragm gas meter measures a displacement or volume at line conditions, Gas, an elastic fluid, varies in volume with changing gas stream temperatures and pressures. Consider the effect of temperature: By definition, the base temperature for gas volume measurement has been established at 60 or 520 degrees absolute, Deviations of 5 F from the base temperature will result in a volume change of approximately 1%. The direction of change, or error in volume measurement, is such that an uncompensated meter will appear to be slow at colder temperatures while at temperatures above the base, the uncompensated meter would appear to be fast.


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