Dhanekar, Saakshi and Islam, Tarikul and Islam, S S and Sengupta, Kamalendu and Saha, Debdulal (2009) Effect of organic vapour on porous alumina based moisture sensor in dry gases. Sensors & Transducers Journal, 6 (SI). pp. 117-127. ISSN 1726- 5479

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A capacitive porous alumina based trace moisture sensor in the range of 50 to 500 ppm (V)was fabricated by low cost sol-gel technique. The cross-sensitivities due to the presence of organic vapours like ethanol, methanol, acetone and benzene were studied. The change in response and recovery time with ppm for moisture sensing was also calculated. The experimental results conclude that moisture sensor is responsive to the polar organic vapours but has almost negligible response to the nonpolar molecules like benzene. Response of the sensor to the organic vapours as compared to the moisture sensitivity is very less. The effect of ambient temperature was found to be negligible.

Item Type: Article
Uncontrolled Keywords: Sol-gel technique; Porous alumina; Traces moisture sensor; Cross-sensitivity; Response time; Recovery time
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 06 Mar 2012 13:00
Last Modified: 06 Mar 2012 13:00
URI: http://cgcri.csircentral.net/id/eprint/1169

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