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Title: Mass Meters For Liquid Measurement Class 2260
Author: Ed Otto
Source: 2002 International School of Hydrocarbon Measurement
Year Published: 2002
Abstract: Coriolis mass meters were introduced to industry in the early 1980s and have gained wide acceptance as accurate and reliable flow measuring devices. Today Coriolis meters are recognized as one of the more significant, estimated shipments of 80,000 units in 2002, and fastest growing of the new technology flowmeter types. There are several factors that have contributed to the growth and acceptance of Coriolis meters. A major factor contributing to their popularity is the basic means by which Coriolis meters measure fluid flow. Coriolis meters measure mass flow directly. By directly measuring mass, Coriolis meters eliminate the need to compensate for pressure and temperature thereby reducing a great deal of measurement error. The result is improved accuracy and application versatility. Multivariable measuring capability further enhances the versatility of a Coriolis flowmeter. In addition to measuring mass flow, fluid density and temperature are also measured and transmitted. Coriolis meters use primary measurement of fluid mass and density to determine and output volumetric flow rate as well. With accurate measurement, application versatility and no moving parts to wear as established features, Coriolis meters have gained acceptance as a viable meter type for liquid hydrocarbon custody transfers. Confirming this trend is the recent publication of Draft Standards by the American Petroleum Institute for Measurement of Single-phase, Intermediate and Finished Hydrocarbon Fluids by Coriolis Meters and Measurement of Crude Oil by Coriolis Meters. The following discussion seeks to enhance the readers understanding of Coriolis technology and general considerations for mass meter measurement of liquid flow.

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