Claims
- 1. A flow rate meter for measuring the rate of flow of a fluid medium flowing in one direction comprising, in combination:
- a carrier oblate in cross-sectional shape disposed in said medium with its longitudinal axis extending in said one flow direction, said carrier having a leading surface extending substantially transverse to said one flow direction and opposed side surfaces extending substantially in said one flow direction, said leading surface being of substantially smaller length than said side surfaces;
- two hot conductive films each disposed in said medium on one of said carrier side surfaces and connected in electrical series relationship to provide a temperature-dependent resistor; and
- circuit means connected to said resistor for providing an electrical current thereto and for measuring the resistance thereof.
- 2. A flow rate meter for measuring the rate of flow of a fluid medium flowing in one direction comprising, in combination:
- a carrier oblate in cross-sectional shape disposed in said medium with its longitudinal axis extending in said one flow direction, said carrier having a leading surface extending substantially transverse to said one flow direction and opposed side surfaces extending substantially in one flow direction, said leading surface being of substantially smaller length than said side surfaces;
- two hot conductive films each disposed in said medium on one of said carrier side surfaces and connected in electrical parallel relationship to provide a temperature-dependent resistor; and
- circuit means connected to said resistor for providing an electrical current thereto and for measuring the resistance thereof.
- 3. A flow rate meter for measuring the rate of flow of a fluid medium flowing in one direction comprising, in combination:
- a carrier oblate in cross-sectional shape disposed in said medium with its longitudinal axis extending in said one flow direction, said carrier having a leading surface extending substantially transverse to said one flow direction and opposed side surfaces extending substantially in said one flow direction, said leading surface being of substantially smaller length than said side surfaces;
- a first hot conductive film having a temperature-dependent resistor disposed in said medium on one of said carrier side surfaces; and
- a second conductive film of a material having constant resistance on the other of said carrier side surfaces, said first and second conductive films being connected in electrical series relationship.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2728060 |
Jun 1977 |
DEX |
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Parent Case Info
This is a continuation of application Ser. No. 913,138, filed June 6, 1978, now U.S. Pat. No. 4,213,335.
US Referenced Citations (4)
Foreign Referenced Citations (2)
Number |
Date |
Country |
371437 |
May 1973 |
SUX |
373536 |
Jun 1973 |
SUX |
Continuations (1)
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Number |
Date |
Country |
Parent |
913138 |
Jun 1978 |
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