Heat-sensitive flow rate sensor

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

1993-08-26

1994-11-08

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

7320418, G01F 168

Patent

active

053616340

ABSTRACT:
A heat-sensitive flow rate sensor employs a measuring resistor unit which has a heat-sensitive resistor. The resistance value of the heat-sensitive resistor progressively decreases towards a supporting portion by which the measuring resistor unit is supported in a detecting tube. Start-up time until the required operation temperature is reached after turning on of the power is shortened and high measuring accuracy is obtained.

REFERENCES:
patent: 4554829 (1985-11-01), Sumal
patent: 4783996 (1988-11-01), Ohta et al.
patent: 4803875 (1989-02-01), Kuhn et al.
patent: 5094105 (1992-03-01), Emmert, Jr. et al.

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