G - Physics – 01 – F
Patent
G - Physics
01
F
73/125
G01F 1/32 (2006.01) G01F 1/86 (2006.01)
Patent
CA 1215855
Abstract: Planar-measuring vortex-shedding mass flowmeter A vortex-shedding mass flowmeter which includes a shedding body mounted in a pipe containing a flowing fluid, a first detecting element that responds to the vortices generated when the fluid flows past a surface of the shedding body for producing a velocity signal proportional to the flow rate of the fluid, a second detecting element for sensing in a measuring plane that includes he surface of the shedding body where vor- tices are generated a moving fluid characteristic dependent on the product of fluid density and the square of the fluid flow rate, and electronic circuitry coupled to the outputs of the first and second detect- ing elements for producing therefrom a mass flow rate signal. In one preferred embodiment, he second de- tecting element is a pitot-type bead device which senses a pressure differential between static and dynamic pressures exiting at two locations on the measuring plane. In another preferred embodiment of the present invention, the second detecting element includes a drag body flow device which responds to the force being applied thereto by the flowing fluid.
460313
Foxboro Company (the)
Smart & Biggar
LandOfFree
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