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3. Fill the hole with water and push the sensor down into the hole so it bottoms out.
• A length of 1/2" Class 315 PVC pipe (pipe inside diameter = 0.716", 18.18mm)
fits snugly over the sensor collar and can be used to push the sensor. A good snug
fit in the soil is important.
PVC Pipe Welded to Soil
Moisture Sensor Collar
4. You can solvent weld the 1/2" Class 315 PVC pipe to the sensor collar for easier
installation and removal. Use a PVC/ABS cement (IPS Weld-on #794 or equiva-
lent).
5. Carefully backfill the access hole with soil to eliminate any air pockets which
could allow water to channel down to the sensor.
6. If you are using temperature sensors, install the temperature sensor next to the
soil moisture sensor.
Note:
Soil moisture sensors will provide better accuracy after one or two irrigation cycles, during which
time they "break-in" and acclimate to the soil conditions.
"Planting" Sensors in Turf or Lawns
1. Cut a slight "V" shaped trench about 5" wide at the top, and about 6" deep into
the turf, and about 6" long.
2. Lift out the turf plug piece you just cut.
3. Press the sensors into the soil at about a 45 degree angle into the side of the
trench to set the sensors about 3"-5" below the soil surface. Make sure they are
set snugly in the soil.
4. Replace the plug removed from the trench and compact it back into place. It will
repair itself in short order.
5. Run the wires to the Soil Moisture Station and connect them as described in
"Connecting the Sensors" on page 1.
Tape
Sensor
Wires
1/2" Class 315 PVC Pipe
(inside diamter = 0.716",
18.18mm)
Pipe welded to
sensor collar with
PVC/ABS cement
Soil Moisture
Sensor
3
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