Apparatus and method for compensating a coriolis meter

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United States of America Patent

PATENT NO 7380439
APP PUB NO 20070125154A1
SERIAL NO

11642168

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Abstract

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A flow measuring system is provided that provides at least one of a compensated mass flow rate measurement and a compensated density measurement. The flow measuring system includes a gas volume fraction meter in combination with a coriolis meter. The GVF meter measures acoustic pressures propagating through the fluids to measure the speed of sound .alpha..sub.mix propagating through the fluid to calculate at least gas volume fraction of the fluid and/or the reduced natural frequency. For determining an improved density for the coriolis meter, the calculated gas volume fraction and/or reduced frequency is provided to a processing unit. The improved density is determined using analytically derived or empirically derived density calibration models (or formulas derived therefore), which is a function of the measured natural frequency and at least one of the determined GVF, reduced frequency and speed of sound, or any combination thereof. The gas volume fraction (GVF) meter may include a sensing device having a plurality of strain-based or pressure sensors spaced axially along the pipe for measuring the acoustic pressures propagating through the flow.

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Patent Owner(s)

Patent OwnerAddress
WEBSTER BANK NATIONAL ASSOCIATION80 ELM STREET NEW HAVEN CT 06510

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Banach, Thomas E Barkhamsted, CT 11 221
Curry, Patrick Glastonbury, CT 12 274
Gysling, Daniel L Glastonbury, CT 155 5373
Loose, Douglas H Southington, CT 53 1239

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