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Title: Fundamentals Of Diaphragm Type Positive Displacement Meters
Author: George S. Cassimus
Source: 1979 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1979
Abstract: Diaphragm meters fall into the category of positive displacement type meters. These measure gas by means of sealing off a known quantity of gas, and subsequently releasing it. The bulk of the meters in use today are of the diaphragm positive displacement type. Over 40 million of these are employed in measuring gas volumes in the U.S. alone. Of this total the large majority are used to measure gas volumes consumed by domestic residential customers.