Oxygen concentration detection apparatus with an adjusting devic

Details Oxygen concentration detection apparatus with an adjusting devic Oxygen concentration detection apparatus with an adjusting devic

1986-11-25

1988-07-26

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204406, 204410, 204412, 204425, 204427, G01N 2758

Patent

active

047598271

ABSTRACT:
An oxygen concentration detection apparatus includes a detection unit having a pair of oxygen-ion conductive solid electrolyte walls forming first and second gas retaining chambers on which first and second sets of electrodes, which are designed to operate alternatively, are provided. First and second current supply circuits are provided for alternatively supplying first and second pump currents respectively on the first and second sets of electrodes. Between the current supply circuits and the sets of electrodes respectively, a first variable resistor and a second variable resistor are provided so that adjustment operations are enabled separately for obtaining an accurate overall output signal characteristic of the oxygen concentration detection apparatus.

REFERENCES:
patent: 4505806 (1985-03-01), Yamada
patent: 4609453 (1986-09-01), Shimomura
patent: 4629549 (1986-12-01), Kojima

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