Thermal flow sensor

Details Thermal flow sensor Thermal flow sensor

1991-01-23

1992-04-28

Cuchlinski, Jr., William A.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374138, 7320426, 7320411, G01F 168

Patent

active

051081938

ABSTRACT:
A thermal flow sensor comprising a substrate which can be etched, an electrical insulating film which is formed on said substrate and which has an etching characteristic different from that of said substrate, a heating resistor which is disposed on said insulating film, and a fluid temperature sensing resistor which is disposed on said insulating film at a certain distance from said heating resistor, the portion of said substrate corresponding to at least one of the heating resistor and the fluid temperature sensing resistor and the vicinity thereof being etched.

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Ref. #3009-GER/CL-T, Ref. #S 46/10-B 86 Pat vB/9/ro (Eng. & German) Mar. 13, 1987. Translation of an official action (3 pgs. each), issued by the German Patent Office. Re: German Patent Appln P3628017.8-52, Applicant Sharp K.K., filed Aug. 19, 1986.

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