Heat-sensitive flow rate sensor

Details Heat-sensitive flow rate sensor Heat-sensitive flow rate sensor

1993-08-24

1995-02-07

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

7320426, G01F 168

Patent

active

053867254

ABSTRACT:
A heat-sensitive flow rate sensor in which a fluid shield is provided so as to cover at least part of a flow velocity probe disposed in a detecting tube, thereby preventing part of heat-sensitive resistor from being directly subjected to change in the flow velocity of a fluid. Temperature of the heat-sensitive resistor is maintained substantially constant even when the fluid flow rate has been drastically changed, thus providing good response characteristic of the flow rate sensor.

REFERENCES:
patent: 4412449 (1983-11-01), Eiermann et al.
patent: 4448070 (1984-05-01), Ohyama et al.
patent: 4785662 (1988-01-01), Ohta et al.
patent: 4864855 (1989-12-01), Shiraishi et al.

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