A solid-state potentiometric CO2-sensor in thick film technology for breath analysis

Titelangaben

Wiegärtner, Sven ; Hagen, Gunter ; Kita, Jaroslaw ; Moos, Ralf ; Glaser, Eckard ; Spallek, Johannes ; Bolz, Armin ; Schmaus, Christa ; Kießig, André:
A solid-state potentiometric CO2-sensor in thick film technology for breath analysis.
2013
Veranstaltung: Sensor 2013 , 14.-16.05.2013 , Nürnberg, Deutschland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Sonstige Präsentationstyp)
DOI: https://doi.org/10.5162/sensor2013/P2.3

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Abstract

In this work, a planar solid-state potentiometric CO2 sensor for medical applications of the type CO2, O2, Au, Li2CO3-BaCO3 | Nasicon | Na2Ti6O13-TiO2, Au, O2, CO2 was developed in thick-film technology. Due to an integrated screen-printed platinum heater on the rear side, the sensor can be applied without changing its working temperature of 525°C in the main flow of the respiratory air of an injured person during intubation. The sensor is insensitive to oxygen variations and its signal follows strictly and reproducible the Nernst equation. Thus, the correct installation of the endotracheal tube can be controlled by detecting the CO2-concentration in the exhaled air.