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Title: Application Of Turbine Meters In Liquid Measurement
Author: Jack Heath
Source: 2008 International School of Hydrocarbon Measurement
Year Published: 2008
Abstract: Liquid driven turbine type devices have been used in a variety of applications, including liquid measurement, for centuries. Water wheels were employed by the Romans, and before that the Chinese had water driven clocks. Rotating water driven devices have long been used to power grain mills. Today much of the worlds electricity is generated by liquid turbines in hydroelectric dams. Simply put, a liquid turbine device takes flowing fluid to turn a vaned or helical rotor in proportion to flow rate. The topic of this discussion will be the application of turbine meters in liquid measurement. Turbine meters are flow velocity measuring primary devices. Meters similar to those in service today have been used since the early 1900s. Initially the spinning rotor was connected to a mechanical totalizer by a gear and wiggler mechanism extending out of the meter body. This kind of design predominated until the 1960s as advances in electronics began to enable the use of electromagnetic pickup coils as non-contact rotor speed sensors. Elimination of mechanical drag improved low flow measurement capability and removed a potential for leaking. Electronic displays increasingly provide more capability and lower maintenance than mechanical devices.

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