B7.2 Influence of the Gas Velocity on the Temperature Homogeneity of Transducers for Gas Sensors

Event
SMSI 2021
2021-05-03 - 2021-05-06
digital
Band
SMSI 2021 - Sensors and Instrumentation
Chapter
B7 Sensor Materials I
Author(s)
J. Herrmann, T. Kern, G. Hagen, R. Moos - University of Bayreuth, Bayreuth (Germany)
Pages
147 - 148
DOI
10.5162/SMSI2021/B7.2
ISBN
978-3-9819376-4-0
Price
free

Abstract

High-temperature gas sensors need homogeneous heating in the functional sensing area. Varying gas flow characteristics lead to cross-effects and signal instability. Utilizing a special sensor transducer, these effects can be proven experimentally. FEM modelling further supports the understanding. Proper protection caps solve cross-sensitivity problems but also cause decreasing sensor response.

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