Campbell Scientific LI190SB LI-COR Quantum Sensor - Manual (Page 7)

LI190SB Quantum Sensor
3. Installation
The LI190SB should be mounted such that it is never shaded by the
tripod/tower or other instrumentation. The sensor should be mounted with the
cable pointed towards the nearest magnetic pole, e.g. in the Northern
Hemisphere point the cable towards the North Pole.
Mounting height is not critical for the accuracy of the measurement. However,
pyranometers mounted at heights of 3 m or less are easier to level and clean.
To ensure accurate measurements, the LI190SB should be mounted using
LI2003S base/leveling fixture. This base incorporates a bubble level and three
adjustment screws. The LI190SB and base/leveling fixture are attached to a
tripod or tower using one of three mounting configurations (see Figure 3-1
through 3-3).
Tools required for installation on a tripod or tower:
Small and medium Phillips screwdrivers
5/32” Allen wrench for NU-RAIL (Figure 3-3)
1/2” open end wrench for 015ARM or CM225 (Figures 3-1, 3-2)
Tape measure
UV-resistant wire ties
Side-cut pliers
Compass
Step ladder
LI190SB Pyranometer
LI2003S
CM225 Stand
CM200 Series Crossarm
FIGURE 3-1. CM225 Pyranometer Mounting Stand
and CM202 Crossarm
3