Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1980-07-01
1983-02-15
Gill, James J.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
324 65R, G01W 100
Patent
active
043733921
ABSTRACT:
A sensor control circuit for detecting water vapor, various gases, etc. The sensor control circuit includes a sensor element whose impedance varies according to the concentration of water vapor, gas or the like and further includes a heating element for heating said sensor element, the heating element being integrally disposed with the sensor element. The aforementioned integrated structure precludes entry of the electric signal applied to the heating element into the impedance detection signal of the sensor element, thus ensuring an accurate detection of the impedance of the sensor element.
REFERENCES:
patent: 3478573 (1969-11-01), King, Jr.
patent: 3553576 (1971-01-01), Petitjean et al.
patent: 4080564 (1978-03-01), Nitta et al.
patent: 4086556 (1978-04-01), Nitta et al.
Gill James J.
Matsushita Electric - Industrial Co., Ltd.
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