Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1983-10-03
1984-10-30
Kaplan, G. L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204426, G01N 2758
Patent
active
044798660
ABSTRACT:
A gas sensor, e.g. oxygen sensor of the solid electrolyte concentration cell type, having a gas-sensitive element comprising a plate-shaped substrate fixed to an end portion of the sensor body and a laminate of relatively thin layers. A hollow cylindrical protective hood is attached to the sensor body to enclose the sensitive element therein, and two or more openings are formed in the cylindrical wall of the hood to allow a gas subject to measurement to flow into the interior of the hood and flow out. To avoid direct exposure of the sensitive element, which exhibits directionality in its output characteristics with regard to the gas flow through said openings, each of said openings is located between the sensitive element and the free end of the hood such that a cross-sectional plane intersecting the openings does not intersect the sensitive element.
REFERENCES:
patent: 3928161 (1975-12-01), McIntyre et al.
patent: 4184934 (1980-01-01), Bode et al.
patent: 4222840 (1980-09-01), Murphy et al.
patent: 4224113 (1980-09-01), Kimura et al.
patent: 4240893 (1980-12-01), Hamano
patent: 4290586 (1981-09-01), Kane et al.
patent: 4310401 (1982-01-01), Stahl
Kitagasaki Yoshitaka
Minami Hidehiro
Nagaishi Hatsuo
Okamura Kenji
Sone Kohki
Kaplan G. L.
Nissan Motor Company Limited
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