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Title: Fundamental Principles Of Rotary Displacement Meters Class 181
Author: Robert Bennett
Source: 1998 International School of Hydrocarbon Measurement
Year Published: 1998
Abstract: Gas measurement in the U.S. and around the world is dominated by diaphragm, rotaiy, turbine, and orifice meters. Each serves a different segment of the gas industn and each has its own set of advantages and disadvantages. These four main t-pes of meters can be broken into tvo distinct categories: positive displacement and inferential. Diaphragm and rotar meters fall into the positive displacement category because the have well-defined measTirement compartments that alternately fill and empt as the meter rotates. By knowing the volume displaced in each meter revolution and by applying the proper gear ratio, the meter will read directly in cubic feet or cubic meters

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