DOMESTIC GAS-DETECTION SYSTEM USING 2 SNO2 INTEGRATED SENSORS

Authors
DEMARNE V ROMANOWICZ B GRISEL A FOURNIER J
Citation
V. Demarne et al., DOMESTIC GAS-DETECTION SYSTEM USING 2 SNO2 INTEGRATED SENSORS, Sensors and actuators. B, Chemical, 19(1-3), 1994, pp. 658-660
Citations number
2
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
Sensors and actuators. B, Chemical → ACNP
ISSN journal
09254005
Volume
19
Issue
1-3
Year of publication
1994
Pages
658 - 660
Database
ISI
SICI code
0925-4005(1994)19:1-3<658:DGSU2S>2.0.ZU;2-I
Abstract
The use of SnO2 sensors in selective alarm systems and gas measurement devices is complicated by the presence of significant cross-sensitivi ty to various gases, mainly alcohol vapours. This paper presents a sim ple approach employing analog electronic circuitry which allows the de tection of methane above a threshold concentration (2000-5000 ppm) in a domestic environment, while the interference of alcohol vapours is e liminated. The device uses two integrated semiconducting gas sensors a nd is based on a differential measurement of these two sensors.