Articles | Volume 17, issue 13
https://doi.org/10.5194/amt-17-4081-2024
https://doi.org/10.5194/amt-17-4081-2024
Research article
 | 
10 Jul 2024
Research article |  | 10 Jul 2024

Preparation of low-concentration H2 test gas mixtures in ambient air for calibration of H2 sensors

Niklas Karbach, Lisa Höhler, Peter Hoor, Heiko Bozem, Nicole Bobrowski, and Thorsten Hoffmann

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Cited articles

Aiuppa, A., Shinohara, H., Tamburello, G., Giudice, G., Liuzzo, M., and Moretti, R.: Hydrogen in the gas plume of an open-vent volcano, Mount Etna, Italy, J. Geophys. Res., 116, B10204, https://doi.org/10.1029/2011JB008461, 2011. 
Baron, R. and Saffell, J. R.: Amperometric Gas Sensors as a Low Cost Emerging Technology Platform for Air Quality Monitoring Applications: A Review, ACS Sensors, 2, 1553–1566, https://doi.org/10.1021/acssensors.7b00620, 2017. 
Barratt, R. S.: The Preparation of Standard Gas Mixtures, Analyst, 106, 817–849, https://doi.org/10.1039/AN9810600817, 1981. 
Benammar, M. A., Ahmad, S. H. M., Abdaoui, A., Tariq, H., Touati, F., Al-Hitmi, M., and Crescini, D.: A Smart Rig for Calibration of Gas Sensor Nodes, Sensors-Basel, 20, 2341, https://doi.org/10.3390/s20082341, 2020. 
Carmo, M., Fritz, D. L., Mergel, J., and Stolten, D.: A comprehensive review on PEM water electrolysis, Int. J. Hydrog. Energ., 38, 4901–4934, https://doi.org/10.1016/j.ijhydene.2013.01.151, 2013. 
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Short summary
The system presented here can accurately generate and reproduce a stable flow of gas mixtures of known concentrations over several days using ambient air as a dilution medium. In combination with the small size and low weight of the system, this enables the calibration of hydrogen sensors in the field, reducing the influence of matrix effects on the accuracy of the sensor. The system is inexpensive to assemble and easy to maintain, which is the key to reliable measurement results.
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