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**Topic under **Flow Measurement

**Source:** www05.abb.com

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Tue Apr 10, 2018 08:09:22 AM

__Short Desciption__:

Principle of Operation When masses flow through a vibrating pipe, Coriolis forces arerngenerated which bend and twist the pipe. These very small pipe de-formations are measured by optimally mounted sensors and elec-tronically evaluated. Because the measured phase shift of the sensor signals is proportional to the mass flowrate, the CoriolisrnMass Flometer measures the mass flowrate in the flowmeter direct-ly. The metering principle is dependent of the density, temperature,rnviscosity, pressure and conductivity.

__Summary__:

The basic concept was to effectively combine the flowmeterrnprimary and converter. A wide range of meter sizes, a variety ofrnflow loop materials and process connections as well as specializingrnon flow, density or batching operations results in optimal adaptationrnto existing process conditions.rnThe metering tubes always vibrate at resonance. The resonant fre-rnquency during operation is a function of the meter tube geometry,rnthe material characteristics of the flowmeter and the mass of thernfluid in the metering tube which is also vibrating. It provides an ac-rncurate measure of the density of the fluid being metered. In sum-rnmary, it is possible to simultaneously measure the mass flowrate,rnfluid density and temperature with the Coriolis Mass Flowmeter.

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"Mass Flow meter Based on the Coriolis Principle"

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