Patent ID: 6615673
Filing Date: 2003-09-09
Classification: G01F

Abstract:
A vortex sensing apparatus for producing at least one electrical signal based on a flow velocity of a fluid, the vortex sensing apparatus comprisinga conduit having a wall forming a passage for guiding said fluid, said wall having inner and outer surfaces and first and second openings extending from said inner surface to said outer surface, said first and second openings at opposite ends of a chord of said wall cross-section, a vortex-creating obstruction element including an elongate portion with first and second ends, a first mounting pad integrally connected to said first end, a second mounting pad integrally connected to said second end, wherein said obstruction element is disposed in said passage with said first mounting pad extending through said first opening at least partially externally of said outer surface, wherein said obstruction element is disposed in said passage with said second mounting pad extending through said second opening at least partially externally of said outer surface, and wherein said elongate portion obstructs said flowing fluid to produce a stream of vortices, and a sensor on said obstruction element for producing at least one electrical signal based on said vortices.