title: High-Performance Gas Sensing of CO:  Comparative Tests for Semiconducting (SnO(2)-Based) and for Amperometric Gas Sensors.
abstract: A comparison of the stability and sensitivity for two different sensor types (semiconductor SnO(2) devices, amperometric electrochemical sensors) has been performed. Sensitivities and drifts in the signal and in the background for various concentrations of CO have been studied for thick-film SnO(2) sensors (Pt and Pd doped) for a period in excess of 8 months. Similar performance data have been recorded for commercial amperometric sensors for a period in excess of 4 years. The two different sensor types investigated here were also compared to the well-known commercial Figaro TGS 822 sensor at similar concentrations. An objective approach for comparing different types of sensors has been developed using the "analytical sensitivity".
authors.affiliation: Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany, BCPS Department, Illinois Institute of Technology, Chicago, Illinois 60616, and TSI Incorporated, P.O. Box 64394, St. Paul, Minnesota 64394.
authors.forename: N
authors.initials: N
authors.lastname: Bârsan
authors.forename: J R
authors.initials: JR
authors.lastname: Stetter
authors.forename: M
authors.initials: M
authors.lastname: Findlay
authors.forename: W
authors.initials: W
authors.lastname: Göpel