Method of and system for determining the mass flow rate of a fluid flowing in a conduit
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United States of America Patent
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May 11, 2004
Grant Date -
Jan 22, 2004
app pub date -
Sep 30, 2002
filing date -
Jul 18, 2002
priority date (Note) -
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Abstract
A method of and system for analyzing the mass flow rate of a fluid flowing in a conduit wherein ultrasonic energy is transmitted along multiple v paths in multiple parallel quadrature planes through the fluid, the transit time of the ultrasonic energy through the fluid with and against the flow direction of the fluid is measured, and the flow velocity of the fluid in each quadrature plane is calculated based on the transit time in each quadrature plane. The density of the fluid in each quadrature plane is then determined and quadrature integration of the product of the fluid density and fluid velocity in each quadrature plane is performed to calculate the total mass flow rate of the fluid more accurately by eliminating errors associated with assuming that the density of the fluid in the conduit is uniform.
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