For even safer working, particularly in areas where there are stringent safety requirements such as refineries, chemical plants and industrial systems with a risk of explosion. The gas concentration of the suction air and the ambient air is continuously measured and evaluated by means of two sensors.
A visual and audible signal is made when an advance warning stage is reached (20% of the lower explosion limit). The vehicle is shut down completely when the main alarm threshold is reached (40% of the lower explosion limit). All inflammable gases and hydrogen are analysed. A hand-held measuring instrument and charging station are also included.