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Gas sensor and control method therefor

  • US 20060048562A1
  • Filed: 08/25/2005
  • Published: 03/09/2006
  • Est. Priority Date: 09/03/2004
  • Status: Active Grant
First Claim
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1. A gas sensor comprising:

  • 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 first detection device which detects 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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