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Title: Turbine Meters For Liquid Measurement
Author: Paul J. Lanasa
Source: 1975 International School of Hydrocarbon Measurement
Year Published: 1975
Abstract: Although the liquid turbine meter principle dates back many decades, the axial flow turbine meters presently employed for liquid measurement are quite new. The axial flow turbine meter was first used for water flow measurement where there was plenty of energy available for driving the rotor and normally where accuracy of measurement was not of prime importance. Reliability was of greater importance, so parts were made rugged and the rotor was designed more to be non-clogging than to be accurate. However, through the evolution of technology, the turbine meter has maintained reliability and ruggedness while attaining a high degree of accuracy. Today, the meters used for water flow have accuracies of j.25% over ranges of 10 to 1 or more while maintaining the same high degree of reliability and ruggedness as did their predecessors. The aerospace industry has also found the turbine meter to be an excellent answer to many of their measurement problems. They were mainly interested in meters which were simple in design, having a high degree of reliability, providing an accurate result, and having an output signal that was suitable for telemetering. The few moving parts of the turbine meter meant simplicity, ease of maintenance and a high degree of reliability. The improved designs produced accurate results. The electrical frequency outputs were suitable for telemetering.

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