Device for determining and/or measuring alcohol content in a gas

Details Device for determining and/or measuring alcohol content in a gas Device for determining and/or measuring alcohol content in a gas

1975-09-02

1977-04-12

Rolinec, Rudolph V.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

73 27R, 338 34, 338 22SD, 23254E, 340237R, G01N 5700, H01C 700, G01N 3700

Patent

active

040177920

ABSTRACT:
A sensor for determining and/or measuring alcohol which exhibits an electric conductivity which varies with the alcohol concentration, comprises a heater with a metallic-oxide semi-conductor body located in the range of the heater. A pair of opposite polarity electrodes are biased into engagement with the surface of the body by a spring clamping means. The semi-conductor body comprises a zinc oxide having a density which is close to the density of a monocrystal. The semi-conductor body is formed of zinc oxide and then sintered at a temperature above 750.degree. C and preferably at 1000.degree. C.

REFERENCES:
patent: 3547835 (1970-12-01), Short
patent: 3695848 (1972-10-01), Taguchi
patent: 3699803 (1972-10-01), Sumi et al.
patent: 3732519 (1973-05-01), Taguchi
patent: 3818899 (1974-06-01), Venema

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