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Electrochemical sensor apparatus and method

  • US 5,165,406 A
  • Filed: 09/13/1990
  • Issued: 11/24/1992
  • Est. Priority Date: 09/13/1990
  • Status: Expired due to Term
First Claim
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1. An electrochemical electrode assembly for measuring the characteristics of a fluid flowing through the assembly, the assembly having a housing with a fluid flow pathway and with at least one electrode cavity in the housing located adjacent to the fluid flow pathway, and at least one electrode embedded in a bottom wall of the electrode cavity, the assembly further comprising:

  • separation means for dividing the electrode cavity into two sub-cavities comprising a selectively-permeable material portion and a reference material portion that is contained within the selectively-permeable material portion, and for defining a sharp corner in the electrode cavity between the two portions;

    an internal reference material deposited in the reference material portion; and

    an ion-selective material deposited in the selectively-permeable material portion.

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