Method for measuring oxygen content

Details Method for measuring oxygen content Method for measuring oxygen content

1991-07-11

1993-04-06

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204431, 204432, G01N 2726

Patent

active

052000443

ABSTRACT:
An oxygen sensor or cell for measuring the oxygen content of a specimen includes a body with a chamber that houses an electrochemically active anode and an electrochemically active cathode. A chemically inert, electrically inactive porous material is disposed between and in contact with the anode and cathode. An anode connector is in contact with the anode and a cathode connector is in contact with the cathode. An electrolytic solution of potassium hydroxide and a dissolved metal saturates the porous material and makes electrical connection between the anode and cathode. A specimen to be measured is introduced into the chamber. The electrolyte promotes catalytic reduction of free oxygen molecules carried by the specimen. The magnitude of current flow through a resistive load connected between the anode and cathode connectors is directly proportional to the quantity of oxygen present in the specimen.

REFERENCES:
patent: 2943028 (1960-06-01), Thayer et al.
patent: 2991412 (1961-07-01), Kordesch
patent: 3223597 (1965-12-01), Hersch
patent: 3793158 (1974-02-01), Hamilton
patent: 3997420 (1976-12-01), Buzza
patent: 4085024 (1978-04-01), Lawson
Kolthoff et al., "Polarography", vol. 1, p. 395, (1952).

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