Dräger Safety Ag&co. Kgaa

Lucas Pfennig

Tim Blöcker

A photo-ionization detector () and a process detect an ionizable substance in a gas (G). At least two measuring cells () are mounted on a measuring cell carrier (). A radiation source () emits ionizing electromagnetic radiation towards the measuring cell carrier (). The gas (G) reaches at least one measuring cell (). Ionization of the gas causes a measurable electrical property of the measuring cell () to be changed. Depending on the electrical property, the measuring cell () generates a signal. This signal correlates with the presence and optionally the concentration of ionizable substance in the gas (G). Preferably, the measuring cell carrier () can be rotated relative to the radiation source ().

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Lübeck, Germany

Lucas Pfennig