Journal of Sensors and Sensor Systems
Journal of Sensors and Sensor Systems
JSSS
Articles | Volume 4, issue 2
Articles | Volume 4, issue 2
https://doi.org/10.5194/jsss-4-281-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/jsss-4-281-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 4, issue 2
Regular research article
 | 
08 Sep 2015
Regular research article |  | 08 Sep 2015

A new low-cost hydrogen sensor build with a thermopile IR detector adapted to measure thermal conductivity

M. Liess

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Short summary
Hydrogen detection for purposes such as smart gas metering or fuel cell safety can be done by using a low-cost off-the-shelf thermopile IR radiation sensor and by driving it as a TCD (thermal conductivity detector). The MEMS thermopile sensor element is exposed to the measured gas environment. By applying an AC heating voltage to the thermopile structure and by measuring its DC output voltage, the hydrogen concentration of its gas environment can be measured with a resolution of up to 3.7ppm.
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