Gas sensing device with a gasdepolarizable electrode

• US 3,247,452 A
• Filed: 08/10/1964
• Issued: 04/19/1966
• Est. Priority Date: 08/10/1964
• Status: Expired due to Term

• Current Assignee: Karl V. Kordesch
• Original Assignee: Karl V. Kordesch
• Inventors: Kordesch, Karl V.
• Application Number:
  US04/389,521
• Time in Patent Office: 617 Days
• US Class Current: 324/425
• CPC Class Codes: G01N 27/404 Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid , e.g. Clark-type oxygen sensors

Claims

3. A GAS-SENSING DEVICE WHICH COMPRISE A CONTAINER, AN ELECTROLYTE WITHIN SAID CONTAINER, A BIASING ELECTRODE, AND A PAIR OF GAS-DEPOLARIZABLE, POROUS, CATALYZED, ACTIVATED CARBON ELECTRODES IN ELECTROCHEMICAL CONTACT WITH SAID ELECTROLYTE AND HAVING ONE SIDE EXPOSED TO A DEPOLARIZING GAS;

ONE OF SAID DEPOLARIZABLE ELECTRODES BEING ELECTRICALLY CONNECTED TO AND FORMING A MEASURING CELL IN CONJUCTION WITH SAID BIASING ELECTRODE AND SAID ELECTROLYTE, AND ANOTHER OF SAID GAS-DEPOLARIZABLE ELECTRODES BEING ELECTRICALLY CONNECTED TO AND FORMING A COMPENSATING CELL IN CONJUNCTION WITH SAID BIASING ELECTRODE AND SAID ELECTROLYTE.

4. A GAS ANALYZER COMPRISING A SINGLE CONTAINER AND WITHIN SAID CONTAINER A PAIR OF GAS-DEPOLARIZABLE POROUS, CATALYZED, ACTIVATED CARBON CATHODES, A COMMON ANODE, A COMMON ELECTROLYTE FOR SAID CATHODES AND SAID ANODE;

AN EXTERNAL RESISTIVE LOAD CONNECTED BETWEEN EACH CATHODE AND SAID ANODE;

THE CATHODE BEING SITUATED SO THAT ONE SIDE OF EACH CATHODE IS EXPOSED TO A DEPOLARIZING GAS;

AND MEANS FOR MEASURING THE POTENTIAL DIFFERENCE OF SAID CATHODES ELECTRICALLY CONNECTED ACROSS SAID CATHODES.