Electrical resistors – Resistance value responsive to a condition – Gas – vapor – or moisture absorbing or collecting
Patent
1974-04-25
1977-02-08
Queisser, Richard C.
Electrical resistors
Resistance value responsive to a condition
Gas, vapor, or moisture absorbing or collecting
73 23, G01N 2712
Patent
active
040074358
ABSTRACT:
An oxygen sensing device particularly suited as a sensor for the exhaust gases of internal combustion engines, the sensing device comprising an electrically insulative ceramic element having bonded on the surface thereof a layer of an oxygen sensing metal oxide, preferably titania, and a pair of electrical leads for the oxygen sensing metal oxide, the device also having a layer of electrical resistance heating material adjacent to the layer of oxygen sensing metal oxide but separated therefrom by a layer of the electrically insulative ceramic, a pair of electrical leads for the electrical resistance heating material, and a layer of ceramic covering the layer of electrical resistance heating material.
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Seiyama et al., "Study on a Detector for Gaseous Components Using Semiconductive Thin Films", Analytical Chemistry, vol. 38, No. 8, July 1966, pp. 1069-1073.
Kreitman Stephen A.
Queisser Richard C.
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