Campbell ET101, Instruction Manual, Page: 27 / 38

4-1
SECTION 4. ET101 REDUCED SENSOR SET INSTALLATION
4.1 REDUCED SENSOR SET
INSTALLATION COMPONENTS
(1) ET101 Sensor Set
4.2 INSTALLATION
The ET101 Reduced Sensor Set is normally
pre-installed. If necessary, install it as shown in
Figure 4.2-1 before mounting the enclosure on
the tower.
FIGURE 4.2-1. Mounting the Reduced
Sensor Set Onto the ET Enclosure
Place the sensor set on top of the enclosure, lining
up the three leveling screws with the three pre-
threaded holes in the top of the enclosure. Install
the ET Enclosure as described in Section 4.
4.3 SENSOR CONNECTION
Refer to Section 3.2 for sensor connection
details. Connect the temperature sensor to the
ET Enclosure connector labeled "Temp / RH"
and the solar radiation sensor to the connector
labeled "Solar Radiation."
4.4 PYRANOMETER
Level the pyranometer as indicated in Figure
4.2-2. Adjust the three leveling screws until the
bubble level indicates plumb. Remove the red
cap from the pyranometer.
FIGURE 4.2-2. Leveling the Pyranometer
4.5 SOIL TEMPERATURE SENSOR
(OPTIONAL)
Bury the soil temperature sensor at the desired
depth. To minimize solar loading of the sensor
cable, bury the cable between the tower base
and the sensor.
Leveling
Screws