Electrochemical gas sensor with wraparound reference electrode
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United States of America Patent
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Feb 8, 1994
Grant Date -
N/A
app pub date -
Jan 4, 1993
filing date -
Jan 4, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrochemical sensor for detecting gas includes stacked reference, counter and sensing electrodes within a body and having a quantity of a liquid electrolyte in an electrolyte chamber therein. A support is provided for holding the electrodes and mats in contact with each other and at an inner end of a cavity within the sensor. A gas passage, such as a diffusion limiter, is provided through the sensor body and permits gas to reach the sensing electrode. The reference electrode is formed in a wraparound structure, with the reference electrode provided with a plurality of integral extensions which extend around the support and the counter electrode and into contact with the liquid electrolyte, thereby providing a large reference electrode fitted into a small body.
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