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**Topic under **Density Meters

**Source:** cidra.com

**File size:** **204.81 KB**

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**Last download on:**
Wed Mar 07, 2018 09:02:33 PM

__Short Desciption__:

To illustrate the fundamental ways in which aeration impacts vibrating-tube density measurements, a simplified ... meter is similar to that used in vibrating tube density meters ...

__Summary__:

This paper describes an approach to measuring fluid density which couples a sonar-based speed-of-sound measurement with vibrating-tube-based density measurement, commonly used in coriolis mass and density meters, to determine the density of aerated liquids. It is well known that the accuracy of coriolis meters can be significantly degraded with the aeration of the process fluid. Augmenting the output of the coriolis meter with a speed of sound measurement provides a novel approach to improved density measurement for aerated fluids in two ways. Firstly, sound speed based gas volume fraction measurement provides a first-principles-based, real time measurement of the gas volume fraction and compressibility of the aerated process fluid. Secondly, the sound speed of the process fluid is used to compensate for the effect of the increased compressibility and inhomogeniety of aerated mixtures on the output of the coriolis density measurement.

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