Gas sensor and control method therefor
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United States of America Patent
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Sep 2, 2008
Grant Date -
Mar 9, 2006
app pub date -
Aug 25, 2005
filing date -
Sep 3, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gas sensor includes a gas detection chamber into which a detection gas is introduced, a detecting element and a compensating element each disposed in the gas detection chamber, a detection device which detects the concentration of a detection target gas contained in the detection gas, in accordance with a difference in electrical resistance values between the detecting element and the compensating element, and a dehumidifying element which is provided in the gas detection chamber, and reversibly absorbs water contained in the detection gas and drains off the water absorbed in the dehumidifying element.
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