×

Electrochemical measuring cell

  • US 5,723,036 A
  • Filed: 09/13/1996
  • Issued: 03/03/1998
  • Est. Priority Date: 09/13/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrochemical measuring cell for simultaneously detecting oxygen and carbon monoxide components of a gas sample, the electrochemical measuring cell comprising:

  • a housing having first and second openings directed toward the gas sample and defining an electrolyte chamber;

    an aqueous electrolyte contained in said chamber;

    a plurality of measuring electrodes disposed in said aqueous electrolyte;

    a first diffusion membrane covering a first one of said measuring electrodes and a second diffusion membrane covering the remaining ones of said measuring electrodes;

    a reference electrode common to said measuring electrodes;

    a counter electrode common to said measuring electrodes;

    said reference electrode and said counter electrode being disposed in said electrolyte so as to be in spaced relationship to each other and to said measuring electrodes;

    first and second diaphragms corresponding to said first and second openings, respectively, for limiting the flow of said gas sample to individual ones of said measuring electrodes;

    said first diaphragm being provided for a first one of said measuring electrodes for facilitating the detection of a first one of said components;

    said second diaphragm being provided for a second one of said measuring electrodes for facilitating the detection of said second one of said components;

    a third one of said measuring electrodes being connected to said second measuring electrode via said second diffusion membrane with said second diffusion membrane defining a gas diffusion path between said second and said third measuring electrodes;

    said first and second diffusion membranes being separate from each other and conjointly defining a gap therebetween; and

    said electrolyte filling said gap whereby said gap and said electrolyte in said gap conjointly defining a barrier to prevent transverse diffusion between said first measuring electrode and said remaining ones of said measuring electrodes.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×