Dissolved oxygen probe

Details Dissolved oxygen probe Dissolved oxygen probe

1975-01-20

1976-04-06

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

324 29, G01N 2746

Patent

active

039487466

ABSTRACT:
A probe immersible in liquid having oxygen dissolved therein and adapted to continuously and accurately measure the oxygen concentration. The probe includes a noble metal measuring electrode, a copper counter-electrode and a potassium hydroxide electrolyte which together define a galvanic cell whose output current depends on the amount of oxygen passing into the cell through a diffusion membrane permeable only to gases. The oxygen within the cell is electrochemically reduced at the surface of the measuring electrode to generate a current that is proportional to the oxygen concentration, the counter-electrode being oxidized.

REFERENCES:
patent: 2913386 (1959-11-01), Clark
patent: 2943028 (1960-06-01), Thayer et al.
patent: 3088905 (1963-05-01), Glover
patent: 3351544 (1967-11-01), Medlar
patent: 3510421 (1970-05-01), Gealt
patent: 3515658 (1970-06-01), Amdur
patent: 3577332 (1971-05-01), Porter et al.
patent: 3703457 (1972-11-01), Niedrach et al.

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