Methane sensor and method for operating a sensor

Details Methane sensor and method for operating a sensor Methane sensor and method for operating a sensor

1996-10-21

1998-06-16

Brock, Michael

Measuring and testing

Gas analysis

Detector detail

73 2331, 73338, 73 34, G01N 2712

Patent

active

057673888

ABSTRACT:
A sensor has a temperature in a range from 700.degree. to 850.degree. C. for detecting methane, and an oxygen-sensitive semiconducting metal oxide. A method for operating a gas sensor having two electrodes, an oxygen-sensitive semiconducting metal oxide conductively connecting the electrodes to one another, and a heating element, includes heating the metal oxide to a constant temperature in a range from 700.degree. to 850.degree. C., and measuring the resistance, conductivity or relative permeability of the metal oxide.

REFERENCES:
patent: 4535315 (1985-08-01), Sakai
patent: 4535316 (1985-08-01), Wertheimer et al.
patent: 4732738 (1988-03-01), Nakatani et al.
patent: 5635628 (1997-06-01), Fleischer et al.
"Solid State Gas Sensors", Moseley et al., The Adam Hilger Series on Sensors, 1987, pp. 17-31.

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