Patent ID: 8586383

Claim:
Device ( 10 ) for detection of harmful substances in a gas mixture comprising a measurement unit ( 28 ) for measuring at least one harmful substance and an evaluation unit ( 30 ) for determining the concentration of the at least one harmful substance, wherein the measurement unit ( 28 ) comprises at least two sensor elements ( 34 ) for simultaneous measurement of different harmful substances, and the sensor elements ( 34 ) are interchangeably arranged and reversibly connectable with the evaluation unit, wherein the sensor elements ( 34 ) comprise a microcontroller system by which the sensor elements ( 34 ) are contacted with the evaluation unit ( 30 ), and are interchangeably connected by way of a plug-in connection ( 40 ) and wherein the device comprises a modulator ( 48 ) for decomposition of detected harmful substances into measurable chemical substances.