Fluid flow sensing means with ambient temperature compensation

Details Fluid flow sensing means with ambient temperature compensation Fluid flow sensing means with ambient temperature compensation

1984-05-07

1986-01-28

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Thermal type

G01F 168

Patent

active

045663203

ABSTRACT:
A flow sensing or differential pressure sensing device utilizing a pair of bridges is disclosed. A first bridge operates a heating element and a temperature dependent resistor to in turn control an error integrator. The error feedback provides the voltage for both of the bridges thereby keeping the operation of the bridges compensated for ambient temperature variations.

REFERENCES:
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patent: 3995481 (1976-12-01), Djorup
patent: 4080821 (1978-03-01), Johnston
patent: 4320655 (1982-03-01), Kammermaier et al.
patent: 4478077 (1984-10-01), Bohrer et al.

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