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Electrochemical sensor for determining the oxygen concentration in gas mixtures

  • US 5,630,920 A
  • Filed: 01/19/1996
  • Issued: 05/20/1997
  • Est. Priority Date: 03/14/1994
  • Status: Expired due to Term
First Claim
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1. A sensor for determining the oxygen concentration in gas mixtures, having a solid electrolyte, with oxygen ionic conductivity, which has a measuring electrode that does not catalyze establishment of equilibrium of the gas mixture and is exposed to the gas mixture, wherein there is added to a platinum-containing measuring electrode (11) a material which is capable of inhibiting the catalytic action of the measuring electrode (11), in such a way that it is possible to set up at the measuring electrode (11) a potential which at least approximately corresponds to the free oxygen content.

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