Temperature-compensated, oxygen-content gas sensor

Details Temperature-compensated, oxygen-content gas sensor Temperature-compensated, oxygen-content gas sensor

1984-06-14

1985-07-30

Envall, Jr., Roy N.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

73 23, 73 27R, 422 98, G01N 2712

Patent

active

045324921

ABSTRACT:
To simplify manufacture and assembly of a temperature-compensated titanium dioxide oxygen sensor, the sensor (9, 9') is applied as a layer on the thermistor body (1), with an electrode (8) interposed; preferably, the thermistor body is densely sintered titanium dioxide, in the form of a closed tube (1, 1') which may have a central opening (FIG. 1: 2) therethrough, with the sensor body being porous titanium dioxide and located either on the inside (FIG. 1) surface of the thermistor body (1) or on the outside (FIG. 2) surface, and supported by the thermistor body, which forms the substrate and support surface for the sensor body.

REFERENCES:
patent: 4147513 (1979-04-01), Bienkowski et al.
patent: 4208786 (1980-06-01), Merchant et al.
patent: 4225842 (1980-09-01), Schlesselman et al.
patent: 4234542 (1980-11-01), Romine
patent: 4453397 (1984-06-01), Ohta et al.
Logothetis et al., "TiO.sub.2 Film O.sub.2 Sensors made by CVD from Organomettallics", Sensors & Actuators, vol. 4, 1983, pp. 333-340.

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