Temperature compensated circuit

Details Temperature compensated circuit Temperature compensated circuit

1982-05-05

1984-04-24

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

324DIG1, G01L 1904

Patent

active

044440561

ABSTRACT:
A differential pressure unit to induce tension and compression in respective strain gages to produce a change in the output of a Wheatstone bridge. The differential pressure or some function thereof is then indicated. Error due to temperature is avoided by maintaining the bridge current constant. The bridge voltage is elevated as a function of temperature to make the bridge current or bridge output independent of temperature.

REFERENCES:
patent: 3161821 (1964-12-01), Price et al.
patent: 3722264 (1973-03-01), Talmo et al.
patent: 3841150 (1974-10-01), Pearson
patent: 3847017 (1974-11-01), Watts
patent: 4202218 (1980-05-01), Romo
patent: 4233848 (1980-11-01), Sato et al.
patent: 4300395 (1981-11-01), Shirouzu et al.
patent: 4337665 (1982-07-01), Sato et al.
patent: 4362060 (1982-12-01), Okayama et al.

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