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Title: Fundamentals Of Gas Turbine Meters
Author: Phillip m. Edwards
Source: 1991 International School of Hydrocarbon Measurement
Year Published: 1991
Abstract: The task of a gas meter is the accurate measurement of the volume of gas delivered to the user. With the increasing cost of exploration, production, and distribution of natural gas, increased importance has been placed on the role of the gas meter as the cash register of the gas industry. In accounting for gas usage, two types of meters are commonly used: Positive displacement and inferential meters. Positive displacement meters operate by alternately filling and emptying chambers of known volume. By counting the number of times the chambers fill and using the appropriate gear ratio, the volume may be measured in the desired units. Two types of positive displacement meters are diaphragm and rotary meters. Because of this method of filling chambers for volume measurement, positive displacement meters are generally limited to use at lower flow rates. At higher flow rates, the size requirements of the measurement chambers becomes a serious drawback. Consequently, inferential meters are usually preferred for high flow rate and high pressure applications.

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