Temperature correcting circuit

Details Temperature correcting circuit Temperature correcting circuit

1974-08-26

1976-04-27

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

324 30R, 324105, G01K 120, G01K 702

Patent

active

039525953

ABSTRACT:
Physical quantities, such as temperature, mechanical stress, gas concentration and acidity, can be measured by means of elements which generate an EMF as a function of the relevant quantity. In many cases the temperature dependence of the conversion is inconvenient. The proposed temperature correcting circuit considerably reduces the said temperature influence, at least for a given operating range, in that the temperature-dependent internal resistance of the element is measured or used by means of an alternating current and the EMF is corrected by means of this temperature information.

REFERENCES:
patent: 2768266 (1956-10-01), Marsden
patent: 3533292 (1970-10-01), Engelhard
patent: 3852666 (1974-12-01), Gahwiler

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