Forschungszentrum Julich Gmbh

Rwe-energie Aktiengesellschaft

Claus-Dieter Kohl

Hans Luth

Peter Kordos

Michael Josef Schoning

Marion Thust

Bernhard Weissbecker

Axel Schwarz

Hans Hummel

Jorg Kelleter

Armin Riemer

Heinz Petig

Stefan Schutz

In a biosensor system for detecting trace compounds resulting from a fire or from plants damaged by destructive insects, a live chemoreceptor is provided for sensing the trace compounds, and a semiconductor component is connected to the chemoreceptor for providing sensor signals when the chemoreceptor senses the presence of trace compounds.

Biosensor system for detecting organic trace compounds produced by

To eliminate the effects of semiconductive sensor aging in the use of a semiconductive sensor for measuring the state variables of a gas in a system in which a pair of electrodes are embedded in an active semiconductive layer so that the conductivity of the semiconductive layer varies as a function of the state variable, a field electrode is provided and superimposed upon the measurement voltage, a voltage pulse is applied intermittently and the characteristic of the resulting current pulse is used to compensate for changes resulting from aging of the sensor.

Apparatus for measuring a state variable in a gas with at least one

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Giessen, Germany

Claus-Dieter Kohl