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Title: Turbine Meters For Liquid Measurement
Author: Chuck Allen
Source: 1992 International School of Hydrocarbon Measurement
Year Published: 1992
Abstract: Flow measurement with todays state of the art liquid turbine meter combines the mechanical aspects of the meter and electronics to measure total flow and/or flow rate within a piping system. The liquid turbine meter is a volumetric measuring instrument. By sensing the linear velocity of the fluid flowing through the open cavities of the meter, the volumetric flow rate can be determined. The flow or linear velocity of the fluid is sensed by the rotation of the rotor which is supported within the meter housing. The rotor is designed so its rotational speed is proportional to the linear velocity of the flowing fluid. Since the linear velocity of the fluid flowing through a given area is directly proportional to the volumetric flow rate, it follows that the rotational speed or RPM of the rotor is also directly proportional to the volumetric flow rate. Therefore, by electronically measuring the rotation of the turbine meter rotor, the flow of the fluid through the meter can be accurately determined. This principle of flow measurement has been accepted by many industries because the liquid turbine meter provides accurate flow measurement over a very wide range of flow rates on many fluids with a variety of physical properties.