2 pyranometer specifications, 3 pyrgeometer specifications, Installation – Campbell Scientific CNR2 Radiometer User Manual
Page 6
CNR2 Net Radiometer
FIGURE 2-1. The Dimensions of the CNR2
2.2 Pyranometer Specifications
Spectral range:
310 to 2800 nm
Zero offset: Type A; 200 W/m
2
FIR
<15 W/m
2
Field of view for upper detector:
180
°
Field of view for lower detector:
150
°
Directional error:
<20 W m
-2
Non-linearity (0-1000 W m
-2
) net
irradiance:
<2.0%
2.3 Pyrgeometer Specifications
Spectral range:
4.5 to 42 µm
Field of view of upper detector:
150
°
Field of view of lower detector:
150
°
Non-linearity (-250 to +250 W m
-2
)
net irradiance:
<1%
3. Installation
For measurement of the net radiation, it is important that the instrument is
located in a place that is representative of the entire study region.
Install the CNR2 such that no shadow is cast on the net radiometer at any time
during the day. In the Northern Hemisphere, mount the CNR2 south of the
mast. In the Southern Hemisphere, mount the CNR2 north of the mast (see
Figure 3-1).
2