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Device and method for sensing water and/or acid in the presence of water in non-aqueous media

  • US 5,331,287 A
  • Filed: 07/31/1992
  • Issued: 07/19/1994
  • Est. Priority Date: 07/31/1992
  • Status: Expired due to Term
First Claim
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1. A device for sensing water content in a nonaqueous medium comprising:

  • an insulating substrate;

    interdigitated electrodes deposited on said substrate; and

    an insulating form of a conductive polymer, the conductive polymer deposited over the interdigitated electrodes to bridge between adjacent digits of the electrodes, wherein the insulating form is converted to its conductive form by hydration with the water to provide a current which is proportional to the amount of water and which is measurable.

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