Electrochemical sensor, particularly for oxygen determination in

Details Electrochemical sensor, particularly for oxygen determination in Electrochemical sensor, particularly for oxygen determination in

1980-02-14

1981-08-04

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

G01N 2758

Patent

active

042820804

ABSTRACT:
To facilitate mass production and permit ready introduction of a substance which provides an oxygen partial pressure reference level, for example the oxygen in ambient air, an elongated plane flat plate-like solid electrolyte body is provided with electrodes thereon, and one of the electrodes is covered by a trough-like cover element to form the reference electrode, the space beneath the trough-like element and the electrode itself being available for the substance which may, but need not be, the oxygen of air, and may be a solid material providing a reference oxygen partial pressure level. The cover plate may, itself, be made of solid electrolyte material and may form a portion of another sensing element, so that a plurality of sensing elements can be superimposed in sandwich-like fashion. A heater element can be applied to a flat plate element of the assembly where desired. The sensors can operate in the potentiometric or polarographic mode.

REFERENCES:
patent: 3691023 (1972-09-01), Ruka et al.
patent: 3719564 (1973-03-01), Lilly et al.
patent: 4107019 (1978-08-01), Takao et al.
patent: 4157282 (1979-06-01), Riddel
patent: 4157948 (1979-06-01), Maurer

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