CNR2

Kipp & Zonen Long & Short Wave Net Radiometer

The CNR2 radiometer features a unique design with individual 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, minimise 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.


Features

  • Measures net radiation
  • Is the mid range radiometer in the Kipp & Zonen range
  • Consists of two pyranometers to measure short-wave radiation and two pyrgeometers to measure infrared radiation
  • Minimises the effects of environmental factors on measurements
  • Not compatible with CR200 data loggers

Specifications

  • 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