GS9.2 - Hydrogen sensor based on a delay path SAW transducer and a nanostructured catalyst
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- Gas Sensors 9 - Hydrogen Sensing
- T. Mazingue, L. Perez-Cortes, C. Hernandez-Rodriguez, M. Lomello-Tafin - Univ. Savoie Mont Blanc, Annecy (France), F. Sarry, G. Lengaine - Institut Jean Lamour, Université de Lorraine-CNRS, Vandoeuvre les Nancy (France), J. Rousset, F. Morfin - Institut de Recherches sur la Catalyse et l’Environnement de Lyon, Villeurbanne Cedex, (France)
- 324 - 325
Hydrogen sensors are of increasing importance as hydrogen gas is a promising alternative as an energy carrier. Unfortunately, hazardous leaks have to be detected quickly and safely since hydrogen is highly explosive for concentrations in the air within 4 and 75%. This article reports the experimental results of a new scheme of hydrogen detection based on a nanostructured catalyst PdPt/Al2O3, a Surface Acoustic Wave (SAW) transducer in a differential configuration, and a signal conditioning circuit. The results show that the scheme of detection presents a linear response, a sensitivity of 5,41V/%(H2) and a low drift, in the range of 0.2 – 2%, with a response time estimated to 10 seconds.