Oxygen sensor

Details Oxygen sensor Oxygen sensor

1989-05-12

1991-05-07

Williams, Hezron E.

Measuring and testing

Gas analysis

Detector detail

204428, G01N 2756

Patent

active

050126709

ABSTRACT:
In an oxygen sensor having a plate-shaped oxygen sensor element, a measuring electrode on the broader width surface of the plate-shaped sensor element, and a protective cover covering the plate-shape sensor element, wherein the protective cover has gas inlet holes for introducing a gas to be measured therein and guide plates for changing the direction of the flow of a gas to be measured. The gas inlet holes have different spacings compared to each other, the guide plates and the gas inlet holes have different lengths compared to each other in the axial direction of the protective cover, and/or the gas inlet holes have different opening extents compared to each other. Consequently, the oxygen sensor always can provide a homogeneous swirling flow of the gas to be measured in the protective cover as well as precise measurement of the gas and a constant .lambda. controlling point.

REFERENCES:
patent: 3835012 (1974-09-01), Hemak
patent: 4038034 (1977-07-01), Nakajima et al.
patent: 4199424 (1980-04-01), Teitelbaum
patent: 4401967 (1983-08-01), Miwa et al.
patent: 4507192 (1985-03-01), Ebizawa et al.
patent: 4597850 (1986-01-01), Takahasi et al.
patent: 4624770 (1986-11-01), Yamada et al.
patent: 4916934 (1990-04-01), Nagata et al.
patent: 4929331 (1990-05-01), Kato et al.

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