Method and semiconductor gas sensor device for detecting fire or explosion hazards

摘要

The invention relates to a method and a device for detecting fire or explosion hazards or open or concealed fires in a building or the like, for example in industrial installations and there, in particular, in the case of dust pollution, the development of gas by substances which develop gases depending on their state being determined and evaluated in relation to a hazard state by at least two semiconductor gas sensors, preferably SnO2 sensors, which react differently to gases due to their basic resistance characteristics. IMAGE