Measuring fluid flow

Details Measuring fluid flow Measuring fluid flow

G - Physics

01

N

354/31, 73/59

G01N 21/85 (2006.01) G01F 1/32 (2006.01) G01F 1/66 (2006.01)

Patent

CA 1168894

R.J. Williamson -D.N.-Batcherlder 9-3 METHOD OF AND APPARATUS FOR FLOW MEASUREMENT ABSTRACT OF THE DISCLOSURE A vortex flowmeter measures flow velocity by detecting the eddies or vortices that are present in a moving fluid. A light beam transmitted through the fluid from a source to a detector is refracted by the passage of the eddies therethrough. This causes corresponding changes in the detected output. By using a split detection arrangement, the velocity of the eddies and hence that of the bulk fluid is determined. In an alternative arrangement, a single detector is employed, and the fluid velocity is determined from the rate at which the eddies pass through the light beam.

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