Solid state pH sensor

Details Solid state pH sensor Solid state pH sensor

1989-12-14

1992-05-05

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204433, 204435, G01N 2730

Patent

active

051104415

ABSTRACT:
A solid state pH sensor having an indicator electrode of metal/metal oxide and a reference electrode of metal/metal salt applied to electrically conductive conductors, such as electrically conductive cermet conductors and electrically conductive metal pins, imbedded in an electrically non-conductive substrate, such as electrically non-conductive ceramic substrates including S-glass substrates. The sensing portion of the sensor preferably has a coating of an annealed perfluorocarbon copolymer. Alternatively, the indicator or reference electrodes may be formed on separate electrically non-conductive substrates with each having an electrically conductive conductor imbedded therein. These indicator or reference electrodes may be utilized with each other or with prior art indicator or reference electrodes.

REFERENCES:
patent: 3726777 (1973-04-01), Macur
patent: 4507194 (1985-03-01), Shimomura et al.
patent: 4519973 (1985-05-01), Cahalan et al.
patent: 4734184 (1988-03-01), Burleigh et al.
patent: 4797192 (1989-01-01), Takiguchi
patent: 4818361 (1989-04-01), Burgess et al.
patent: 4818365 (1989-04-01), Kinlen et al.
patent: 4908117 (1990-03-01), Kinlen et al.

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