CNR4 Net Radiometer
The CNR4 net radiometer consists of two first-class pyranometers, one facing upward, the other facing downward, and two pyrgeometers positioned similarly.
The pyranometers measure short-wave radiation. The pyrgeometer pair measures long-wave radiation.
The upper long-wave detector of CNR4 has a meniscus dome to ensure water droplets role off easily. The dome also improves the field of view to nearly 180°.
All 4 sensors are integrated directly into the instrument body in a neat compact design.
For optimal accuracy the individual sensors are calibrated individually.
|Spectral range (50% points)||0.3 to 2.8 µm = 300 to 2800 (short wave) nm|
|Spectral range (50% points)||4.5 to 42 µm = 4500 to 42000 (long wave) nm|
|Sensitivity||5 to 20 µV/W/m²|
|Temperature dependence of sensitivity (-10 ºC to +40 ºC)||< 4 %|
|Response time||< 18 s|
|Non-linearity||< 1 %|
|Operating temperature||-40 to 80 °C|
|Ventilation power||(of the optional CNF4 ventilation unit) 10 W|