System for measuring a parameter of an aerated multi-phase...

Measuring and testing – Volume or rate of flow – Combined

Reexamination Certificate

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Reexamination Certificate

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07389687

ABSTRACT:
A method and apparatus for measuring at least one characteristic of an aerated fluid flowing within a pipe is provided, wherein the method includes generating a measured sound speed, a measured density, a pressure and a gas volume fraction for the aerated fluid. The method also includes correcting the measured density responsive to the measured sound speed, the pressure and the gas volume fraction to generate a corrected density. The method further includes calculating a liquid phase density, determining whether the gas volume fraction is above a predetermined threshold value and generating a mass flow rate responsive to whether the gas volume fraction is above the predetermined threshold value.

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