Hot wire type flow sensor

Details Hot wire type flow sensor Hot wire type flow sensor

1988-06-03

1989-09-12

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

7320426, G01F 168

Patent

active

048648558

ABSTRACT:
A hot wire type flow sensor having a cylindrical housing to be placed in a fluid passage, a plurality of hot wire supporters mounted on the inner surface of the housing, a hot wire stretched between the supporters, and a control circuit connected to the hot wire to output a signal in proportion to a flow rate of fluid. The inner surface of the housing at the upstream side of the hot wire is so formed that the flow of the fluid is concentrated at the central part of the hot wire.

REFERENCES:
patent: 3433069 (1969-03-01), Trageser
patent: 3464269 (1969-09-01), Froger
patent: 4074566 (1978-02-01), Obayashi et al.
patent: 4448070 (1984-05-01), Ohyama et al.

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