Description

The NR Lite 2 is used for measuring solar and far infrared radiation balance, the net (total) radiation. The upward facing sensor measures the incoming Ultraviolet (UV) and Far InfrarRed (FIR) radiation coming from the entire atmosphere, The paired downward facing sensor measures the radiation reflected from the surface below. The two readings are then automatically subtracted and the resulting output from the NR Lite 2 shows the net radiation at that location in Watts per square meter (Wm²).

The NR Lite 2 is designed for continuous outdoor use with the sensor surfaces coated with PTFE. This allows for a wide spectral range from 200nm up to 100µm, whilst providing a long life and easy maintenance. The sensor is not protected and is in direct contact with weather conditions. Therefore it cools down a lot faster due to wind and the top sensor can be covered by snow and ice. Additional wind speed monitoring can be used to correct for the wind speed sensitivity. Correction factors are included in the manual supplied with the unit to correct for a given wind speed.

Applications

• Agricultural Meteorology: Evapotranspiration calculations, crop damage prevention.
• Glacier and ice field Monitoring: Particular interest to global warming studies
• Building Physics: Study of thermal stress and heat balance.
• Road Safety: Highway condition monitoring.

Diagram

Specifications