Wma Airsense Analysentechnik Gmbh

Stefan Dohren

Andreas Walte

Gerhard Matz

Wolf Munchmeyer

Torsten Hunte

The invention relates to a device for identifying gaseous compounds, comprising a sensor array ( ) having, for instance, ten gas sensors ( ) in the form of semiconductor gas sensors. Said sensor array ( ) has a supply line ( ) with an inlet ( ) and an outlet ( ). A switchable three-way valve ( ) is located in the supply line ( ), to which a selective collector unit ( ) is attached. Said collector unit ( ) comprises a special adsorber ( ), a heater ( ) and a separate feed pump ( ) with a flow sensor ( ). A secondary line ( ), in which a dilution unit ( ) is arranged, discharges into the feed line ( ) between the three-way valve ( ) and the sensor array ( ). A feeding and control unit ( ) also having a feed pump ( ) with a flow sensor ( ) is located in the area of the outlet ( ) of the sensor array ( ). An electrical line ( ) leading to an evaluation computer ( ) branches off from the sensor array ( ).

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Tangstedt, Germany

Stefan Dohren