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Title: Fundamentals Of Gas Turbine Meters
Author: Tom Hudson
Source: 2008 International School of Hydrocarbon Measurement
Year Published: 2008
Abstract: Gas Turbine Meters were introduced to the US in the 1960s. Since their introduction the turbine meter has grown in popularity due the fact that they have a high degree of accuracy, repeatability and the ability to cover a large flow range. Gas turbine meters are available with an assortment of configurations, gear driven odometers, ID drives, fully electronic designs with a variety of outputs and self-correcting models. Many new and imaginative developments have been added to the turbine meter. This greatly improves the diversity of the meter and allows for the meter to be used in new flow measurement applications. The smaller gas turbine meters have been used to replace rotary and larger diaphragm meters. Larger turbine meters are used in city gates, power stations, gas storage fields or to replace orifice runs. The turbine meter is versatile and accurate over a wide range of flowing conditions making it the preferred choice as a reference for several calibration facilities. The turbine meter provides less pressure drop for equivalent flow rates when compared to other types of meters. This means the gas in a pipe line can be moved more efficiently. The meter can also provide pulse outputs allowing it too easily be interfaced with a variety of flow computers, correctors and local readout devices.