G - Physics – 01 – D
Patent
G - Physics
01
D
354/31
G01D 3/02 (2006.01) G01D 18/00 (2006.01) G01F 25/00 (2006.01)
Patent
CA 1301332
ABSTRACT OF THE DISCLOSURE A method and apparatus is disclosed for measur- ing flowing gas and at least one variable for calculating gas flow corrected to a base value of that variable. Illustratively, the measured variables are temperature and pressure, and devices are employed for measuring the temperature Tf and pressure Pf of the gas flowing through a conduit, and means in the illustrative form of a flow meter for measuring the volume Vf of the gas flowing through the conduit. Calculating means in the illustrative form of a programmed microprocessor is employed to calculate the corrected gas volume to base conditions in accordance with an expression including the supercompressibility factor. The supercompressibility factor is calculated according to an equation involving only whole number exponentiation and a selected set of coefficients. The calculation means selects a particular set of these coefficients in accordance with indications of pressure and/or temperature.
530143
Polesnak David L.
Woodward Richard V.
M. & Fc Holding Company Inc.
Shapiro Cohen
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