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Selective sensor construction

  • US 4,620,918 A
  • Filed: 05/03/1985
  • Issued: 11/04/1986
  • Est. Priority Date: 05/03/1985
  • Status: Expired due to Fees
First Claim
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1. For inclusion in a chemically selective sensor of the kind in which two spaced electrodes are bridged by an electrolyte and separated from the external environment by a membrane which is permeable by selected ions or molecules, in combination:

  • an electrode and electrolyte container having a wall formed with an opening of given size;

    a membrane disposed to cover said opening, the membrane being fixed to said container at the margins of said opening entirely around said opening;

    a cover formed with a through hole and fixed to the container overlying the membrane such that said hole overlies a central region of said membrane;

    said container comprising a generally cylindrical tube one open end of which forms said opening;

    said cover forming a closure for said one open end; and

    said container comprising a second tube telescoped into the first mentioned tube such that an open end of said second tube is sealed against said membrane.

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