title: Platform for a hydrocarbon exhaust gas sensor utilizing a pumping cell and a conductometric sensor.
abstract: Very often, high-temperature operated gas sensors are cross-sensitive to oxygen and/or they cannot be operated in oxygen-deficient (rich) atmospheres. For instance, some metal oxides like Ga(2)O(3) or doped SrTiO(3) are excellent materials for conductometric hydrocarbon detection in the rough atmosphere of automotive exhausts, but have to be operated preferably at a constant oxygen concentration. We propose a modular sensor platform that combines a conductometric two-sensor-setup with an electrochemical pumping cell made of YSZ to establish a constant oxygen concentration in the ambient of the conductometric sensor film. In this paper, the platform is introduced, the two-sensor-setup is integrated into this new design, and sensing performance is characterized. Such a platform can be used for other sensor principles as well.
authors.affiliation: Bayreuth Engine Research Center, Functional Materials, University of Bayreuth, 95440 Bayreuth, Germany.
authors.forename: Diana
authors.initials: D
authors.lastname: Biskupski
authors.forename: Andrea
authors.initials: A
authors.lastname: Geupel
authors.forename: Kerstin
authors.initials: K
authors.lastname: Wiesner
authors.forename: Maximilian
authors.initials: M
authors.lastname: Fleischer
authors.forename: Ralf
authors.initials: R
authors.lastname: Moos