Calorimetric flow indicator

Details Calorimetric flow indicator Calorimetric flow indicator

1993-09-27

1995-07-04

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

Thermal type

7320425, 7320426, 7320427, G01F 168

Patent

active

054289947

ABSTRACT:
A calorimetric flow indicator includes a sensor element which forms a temperature-dependent resistance and which heats up in a short period of time by application thereto of electrical current. A resistance variation of the sensor element, induced by cooling, represents a measure of flow velocity of a medium flowing by the sensor element. The sensor element rests against an inner surface of a front wall of a housing projecting into the flowing medium. That section of the housing that includes the front wall and projects into the flowing medium has the shape of an obtusely truncated cone.

REFERENCES:
patent: 3754201 (1973-08-01), Adams
patent: 3945252 (1976-03-01), Fiore
patent: 4142170 (1979-02-01), Blatter
patent: 4932256 (1990-06-01), Buck et al.
patent: 5040901 (1991-08-01), Suzuki

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