A complete new instrumentation for AOD detection made of robust components and long-lasting materials, perfectly combined with an easy-to-use software.
The ZEN system comprises a new radiometer (ZEN-R52) and a methodology for AOD retrieval (ZEN-LUT). The ZEN-LUT method is based on the comparison of the measured zenith sky radiance (ZSR) with a look-up table (LUT) of computed ZSRs.
The first version was jointly developed by us and IARC (Spain) and designed to obtain AOD from downwelling zenith sky radiation at different wavelengths. It incorporates collimating lenses and internal baffles to achieve a -2º field of view. The measurements, made simultaneously in all channels, are amplified and processed. Inside the device there are internal sensors for humidity and temperature monitoring.
|Number of channels||5|
|Wavelengths||440.500.675.870 and 940 nm|
|Field of view||2º|
|Measurement rate||1 minute|
|Stray light||Better than 10-5|
|Dark noise||<5 raw counts|
|Thermal noise||<5 raw counts|
|Data Output||Raw countsStandard devitationWatt/m2AODInternal temperatureInternal humidity
Sun position data
|Software||CaptureProcessingData graphsDatabaseExport DataFTP Backup
|Communications||Gigabit PoE LAN|
|Power Supply||Input: 90 – 240V (**)
Output: 15V, 25W PoE Passive
|Window||75mm diameter borosilite window, 6.5 mm thickness|
|Case||Top: anodized aluminiumBody: power coated aluminum|
|Internal extra heater||10W|
|Operating temperature||-40º to 55º (with internal extra heating)|
|Dimensions||170mm height, 180 mm diameter|
|Weight||6 kgs (ZEN), 11.5 kgs (total system packed)|