Electrochemical gas monitor

A carbon monoxide monitor for quantitatively measuring carbon monoxide present in a gas phase mixture comprising:

• an electrolyte of a substantially pure aqueous perchloric acid solution;
• a porous electrode having one side in contact with said electrolyte to form an oxidizing interface and the other side in contact with said gas phase mixture, said electrode comprising:
• a membrane of an hydrophobic material which is chemically inert with respect to said electrolyte and said gas phase mixture and permeable to carbon monoxide;
• and
• a conductive gold coating adhered to one side of said membrane, which side is the side of said electrode forming said oxidizing interface, said coating permitting carbon monoxide to diffuse therethrough to said interface;
• means for supplying said gas phase mixture to said other side of said electrode;
• and
• means electrically connected to said electrode for deriving a signal corresponding to a quantitative measure of the amount of oxidation of carbon monoxide at said interface.

A carbon monoxide monitor for quantitatively measuring carbon monoxide present in a gas phase mixture comprising:

• an electrolyte of a substantially pure aqueous perchloric acid solution;
• a porous electrode having one side in contact with said electrolyte to form an oxidizing interface and the other side in contact with said gas phase mixture, said electrode comprising;
• a membrane of an hydrophobic material which is chemically inert with respect to said electrolyte and said gas phase mixture and permeable to carbon monoxide;
• and
• a conductive gold coating adhered to one side of said membrane, which side is the side of said electrode forming said oxidizing interface, said coating permitting carbon monoxide to diffuse therethrough to said interface;
• means for supplying said gas phase mixture to said other side of said electrode;
• a glass reference electrode;
• and means electrically connected to said porous electrode and said reference electrode for deriving a signal corresponding to a quantitative measure of the amount of oxidation of carbon monoxide at said interface.