Fluid flow direction and velocity monitor and temperature compen

Details Fluid flow direction and velocity monitor and temperature compen Fluid flow direction and velocity monitor and temperature compen

1994-11-18

1996-06-04

Chilcot, Richard

Measuring and testing

Volume or rate of flow

Thermal type

7320419, G01F 168

Patent

active

055222617

ABSTRACT:
A fluid flow direction and velocity monitor, particularly useful in monitoring pressure differentials between a controlled environment and its surroundings, includes a heated thermal sensor situated between upstream and downstream cold thermal sensors within a channel. The heated thermal sensor provides a pressure differential or fluid flow velocity signal. The pair of cold thermal sensors are utilized to provide both temperature compensation and fluid flow direction. The pressure differential and direction signals are combined by the circuitry to yield a single digital direction and pressure signal.

REFERENCES:
patent: 3891391 (1975-06-01), Boone
patent: 4319483 (1982-03-01), Durham, Jr. et al.
patent: 4733559 (1988-03-01), Aine et al.
patent: 4787251 (1988-11-01), Kolodjski
patent: 4982605 (1991-01-01), Oram et al.
patent: 5072614 (1991-12-01), Hisanaga

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