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Sensor Installation
TSM-3 (Type 3) Soil Sensors
To Install the Sensors:
Using a spade (or other suitable tool), carefully cut and
remove turf area where the sensor(s) will be located.
Dig sensor holes as deep as the depth of the lower
sensor (if two will be used) as shown in Figure 9.
Cut trenches for sensor cables, perpendicular to the
green edge and running from the sensor hole to 1-2
feet past the edge of the green at valve box location.
NOTE: Sensor cable should be placed deep enough
to avoid damage from deep tine aerifi cation.
Set sensor(s) into the bottom of the hole and run each
sensor cable into the trench and back to valve box
location.
Push one sensor into the soil at the bottom of the
hole. Push the other sensor into the side of the hole at
the root zone (typically about 3" below grade).
CAUTION: Be sure to push all four sensor probes
completely into the undisturbed soil. Otherwise, air
pockets may be created when the hole is fi lled in that
cause inaccurate sensor readings.
74
Integrated Sensor System
Carefully replace soil and turf over the sensor hole and
wire path trench.
Trench
to Valve
Box
Figure 9 - Type 3 Sensor Installation
Root
Zone
Sensor
Hole
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