Flowmeter fluid composition and temperature correction

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36457101, 364510, 7386102, 7320418, 374 40, 374 44, G01D 1800, G01F 186, G01F 168

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052375234

ABSTRACT:
A method for correcting the flow measurement of a gaseous or liquid fluid of interest for changes in the composition and temperature of that fluid in a flowmeter of the hot element type is disclosed in which an uncorrected flow value signal for the fluid of interest in relation to a hot element sensor output is corrected by applying a first correction factor to the output based on certain unique physical parameters of the fluid of interest which nominally include thermal conductivity, k, specific heat, c.sub.p, and temperature, T, obtaining an uncorrected flow measurement value from the corrected output and obtaining the corrected flow measurement by applying a second correction factor to the uncorrected flow measurement value based on the certain unique physical parameters.

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patent: 4961348 (1990-10-01), Bonne

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