B7.4 - YSZ Thick Film Oxygen Gas Sensor Using the Direct Ionic Thermoelectric Effect
- Event
- SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg - Band
- Proceedings SENSOR 2009, Volume II
- Chapter
- B7 - Gas and Humidity
- Author(s)
- U. Roeder-Roith, F. Rettig, K. Sahner, R. Moos - University of Bayreuth, Bayreuth, Germany, T. Roeder, J. Janek - Justus-Liebig-University Gießen, Gießen, Germany
- Pages
- 129 - 132
- DOI
- 10.5162/sensor09/v2/b7.4
- ISBN
- 978-3-9810993-5-5
- Price
- free
Abstract
The introduced thick-film sensor determines the oxygen partial pressure by measuring the thermopower over an oxygen ion conductor. The measurand is a voltage, which means that the sensor signal is independent on geometry. That is advantageous for long-term stability because the influence of aging effects like cracks or sintering is low. Another advantage of this method compared to the measuring of a Nernst voltage (e.g. in a λ-probe) is that no reference atmosphere is needed. So, the sensor setup can be designed easier.