objectives and innovation
Installation of equipment at Cabauw tower
At the start of November 2004 the new equipment was installed at Cabauw tower. Shown here is an overview of the equipment in the cellar of the tower building.
The sampling system layout is shown here..
The flow controllers and sampling valves are mounted on the wall in easy to maintain positions.
The sample air is dried to dew points of -60 °C using a double automatically regenerating cryo cooler, the switching and selection of sample height and calibration samples is completely automated by a single PC program (called CabauwTER) that also reads the data from Licor and GC on-line. Furthermore the software stores the data in a SQL database and performs the calibration of the raw data using the on-line calibration data. The data is plotted automatically in graphs and transferred on a hourly basis to Petten through an internet link.