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Journal of Sensors and Sensor Systems An open-access peer-reviewed journal
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Thimble-type lambda probes that are known for their robustness in harsh exhausts can also be used as an NOx sensor by applying the pulsed polarization technique. This study evaluates in detail the influence of temperature on the NO sensitivity, so that an optimum operating point can be derived. Stepwise NO concentration changes between 0 and 12.5 ppm in synthetic exhausts demonstrate the high potential of this concept.
Articles | Volume 4, issue 2
J. Sens. Sens. Syst., 4, 321–329, 2015
https://doi.org/10.5194/jsss-4-321-2015

Special issue: High-temperature sensors and materials

J. Sens. Sens. Syst., 4, 321–329, 2015
https://doi.org/10.5194/jsss-4-321-2015

Regular research article 23 Nov 2015

Regular research article | 23 Nov 2015

Influence of operation temperature variations on NO measurements in low concentrations when applying the pulsed polarization technique to thimble-type lambda probes

S. Fischer et al.

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Short summary
Thimble-type lambda probes that are known for their robustness in harsh exhausts can also be used as an NOx sensor by applying the pulsed polarization technique. This study evaluates in detail the influence of temperature on the NO sensitivity, so that an optimum operating point can be derived. Stepwise NO concentration changes between 0 and 12.5 ppm in synthetic exhausts demonstrate the high potential of this concept.
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