Water Vapor Analyzer (H2O-Analyzer) The H2O-Analyzer operates with two different measuring principles: a cryocooled chilled mirror condensation type hygrometer (Buck Research Instruments, Boulder, USA) and a laser based dual channel photoacoustic water vapor detector (WaSulTM- Hygro, Hilase Ltd., Szeged, Hungary). The instrument is supervised by Institute for Meteorologie and Climate Research (IMK), Forschungszentrum Karlsruhe, Germany.

Front plate of the Water Vapor Analyzer. The instrument is constructed as standard 19'' plug in unit for the CARIBIC container.