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US 4,522,690 AGranted
Electrochemical sensing of carbon monoxide
AssigneeHoneywell Inc.
InventorHanumanthaiya V. Venkatasetty
Life of this patent
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Abstract
Apparatus and method for an electrochemical sensor for carbon monoxide detection in a gelled aprotic organic nonaqueous electrolyte solution.
Claims17
A method for detecting the presence of a plurality of toxic agents comprising the steps of:
- providing electrochemical cell means having an electrode configuration comprising a plurality of electrodes including a platinum working electrode, a platinum counter electrode and an Ag/Ag.sup.+ reference electrode;
- providing a nonaqueous gelled aprotic electrolyte solution in the electrochemical cell means, said solution comprising an aprotic organic solvent selected from the group consisting of .gamma.-butyrolactone and propylene carbonate, an amount of lithium perchlorate electrolyte and polyethylene oxide gelling agent;
- exposing the electrochemical cell means to an atmosphere suspected of containing the gas of interest;
- providing electrical source means and connecting the source means to the electrode configuration to energize the cell means;
- and
- providing means for measuring the current flowing between said sensing electrode and said counter electrode.
3 more elements
An electrochemical sensor for toxic gas detection comprising:
- electrochemical cell means having therein an electrode configuration comprising a plurality of electrodes including a platinum working electrode, a platinum counter electrode and an Ag/Ag.sup.+ reference electrode;
- a nonaqueous gelled aprotic electrolyte solution in said cell means, said electrolyte solution comprising an aprotic organic solvent selected from the group consisting of .gamma.-butyrolactone and propylene carbonate, an amount of lithium perchlorate electrolyte and an amount of polyethylene oxide gelling agent;
- adjustable potential electrical source means, to energize said electrochemical cell means at desired potentials, connected across said working and counter electrodes;
- and
- current measuring means connected across said working and counter electrodes.
2 more elements
An electrochemical sensor for toxic gas detection comprising:
- electrochemical cell means having therein an electrode configuration comprising a plurality of electrodes including a platinum electrode working, a platinum counter electrode and an Ag/Ag.sup.+ reference electrode;
- a nonaqueous gelled aprotic electrolyte solution in said cell means, said solution comprising an aprotic organic solvent selected from the group consisting of .gamma.-butyrolactone and propylene carbonate, an electrolyte comprising an amount of lithium perchlorate and an amount of tetraethylammonium perchlorate and an amount of polyethylene oxide gelling agent;
- adjustable potential electrical source means, to energize said electrochemical cell means at desired potentials, connected across said working and counter electrodes;
- and
- current measuring means connected across said working and counter electrodes.
2 more elements
Dependencies are inferred from the claim text.