Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 61)

UT20 and UT30 Tower-based Weather Stations
8.5.15 237 Leaf Wetness Sensor
Mounting and orientation considerations are left to the user to determine.
Consult the 237 manual for preparation and other information. Normally, the
sensor is mounted away from the meteorological tower in or near a plant
canopy.
FIGURE 8-30. 237 Leaf Wetness Sensor
51