Dräger Safety Ag&co. Kgaa

Malte Baesler

Burkhard Stock

Jürgen Osswald

Sandra Balhorn

Tom Poethig

Tobias Reier

A gas detection device and a process monitor an area for a combustible target gas. A heating segment of a detector () is heated when electrical current flows therethrough. A heating segment of a compensator () is heated when electrical current flows therethrough. An electrical voltage is applied to both the detector and the compensator. The heating of the detector () causes a combustible target gas to be oxidized in an interior of the gas detection device. A detection variable, which depends on the temperature (Temp_) of the detector, and a detection variable, which depends on the temperature (Temp_) of the compensator, are measured. A presence and/or a concentration of a target gas are determined as a function of the detection variables. A quality parameter is measured and increases as the detection variable depending on the detector temperature increases and as the detection variable depending on the compensator temperature decreases.

Gas detection device with a detector and a compensator and gas detection process

A device and a process detects alcohol in a gas sample, especially in an exhaled breath sample. A measuring chamber () receives the gas sample to be tested. Two IR radiation sources () are configured to transmit an IR beam each into the measuring chamber (). Two IR detectors () generate a measured value each depending on an incident IR beam. An analysis unit () automatically makes a decision on whether or not the gas sample contains alcohol, doing so depending on the two measured values from the two IR detectors ().

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Bargteheide, Germany

Malte Baesler