Heat-sensitive flow rate sensor having a longitudinal wiring pat

Details Heat-sensitive flow rate sensor having a longitudinal wiring pat Heat-sensitive flow rate sensor having a longitudinal wiring pat

1993-08-24

1994-10-04

Chilcot, Jr., Richard E.

Measuring and testing

Volume or rate of flow

Thermal type

7320418, G01F 168

Patent

active

053515374

ABSTRACT:
A heat-sensitive flow rate sensor employs a measuring resistor unit which has patterning wirings formed on a heat-sensitive resistor and presenting a principal pattern which extends in parallel with the longitudinal axis of the measuring resistor unit. Temperature distribution over the heat-sensitive resistor is made uniform so that measuring error due to change in the temperature of a measured fluid is reduced, thus enabling flow rate measurement at enhanced accuracy.

REFERENCES:
patent: 4345465 (1982-08-01), Gruner et al.
patent: 4449402 (1984-05-01), Eiermann et al.
patent: 4478077 (1984-10-01), Bohrer et al.
patent: 4803875 (1989-02-01), Kuhn et al.
patent: 4936145 (1990-06-01), Hohenstatt
patent: 5038610 (1991-08-01), Diehl et al.
patent: 5195367 (1993-03-01), Hohenstatt et al.
patent: 5251481 (1993-10-01), Huck et al.

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