:: Product Information



The CNR2 features a unique design with separate outputs for short-wave (solar) and long-wave (atmospheric and terrestrial) radiation. The CNR2 fits in the Kipp & Zonen product line between the single output NR-LITE and the four-component CNR1. The glass domes and silicon windows protect the thermopile detectors from environmental factors, minimize the effects of wind and rain on measurements, and are easy to clean.


Kipp & Zonen's CNR2 Net Radiometer measures the energy balance between incoming short-wave and long-wave infrared radiation versus surface-reflected short-wave and outgoing long-wave infrared radiation. It consists of a pyranometer and pyrgeometer pair that face upward and a complementary pair that face downward. The pyranometers and pyrgeometers measure short-wave and far infrared radiation, respectively. Field-of-view is 180 degrees for the upper pyranometer, and 150 degrees for the lower pyranometer. Both upper and lower pyrgeometers provide a 150-degree field-of-view. The CNR2 uses drying cartridges to prevent condensation. Please note that the CNR2 is not compatible with our CR200-series dataloggers.


Spectral Range
Pyranometer: 310 to 2800 nm
Pyrgeometer: 4.5 to 42 μm
Response Time: <10 seconds
Temperature Dependence of Sensitivity: <5 % (-10° to + 40ºC)
Sensitivity Range: 10 to 20 μV W-1 m2
Output Range
Pyranometer: 0 to 50 mV
Pyrgeometer: ±5 mV
Sensitivity Change per Year: <1%
Tilt Error: <1%
Uncertainty in Daily Total: <10%
Sensor Asymmetry: <5%
Directional Error: <20 W m-2 (pyranometer)
CE Compliance: Conforms to the CE guideline 89/336/EEC 73/23/EEC

Producing Area:USA

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