Three-electrode electrochemical gas sensor
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United States of America Patent
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Aug 8, 2000
Grant Date -
N/A
app pub date -
Sep 8, 1998
filing date -
Sep 11, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A simple, reliable, and leak-proof three-electrode electrochemical sensor for detection of toxic gases. The sensor comprises a housing having an electrochemical gas sensor cell with an electrolyte and sensing, counter and reference electrodes bonded to conductive plastic. Each of the electrodes is a membrane formed from a fluoropolymer film having a layer adhered thereto of a fluoropolymer-impregnated catalyst. The layers of each of the electrodes are bonded to conductive plastic, and are separated by an absorbent material having an electrolyte absorbed therein. The sensor is particularly intended for detection of carbon monoxide, but may be used to detect other gases.
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