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Gas sensor

  • US 5,234,567 A
  • Filed: 01/23/1992
  • Issued: 08/10/1993
  • Est. Priority Date: 01/25/1991
  • Status: Expired due to Fees
First Claim
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1. An electrochemical gas sensor for sensing an alkaline gas, the sensor comprising at least sensing and counter electrodes provided in a cell containing an aqueous electrolyte, the cell further including a diffusion barrier to restrict the access of gas to the cell, and a chemical species with which the gas reacts ensue to form a product which is more electrochemically active than the gas, wherein said chemical species is one of:

  • a) iodine;

    b) Nesslers reagent; and

    c) a solution of manganous and silver nitrates.

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