User's Manual

7
SystemCalibrationMode
The sensor system will be automatically calibrated within 24–48 hours
after the initial installation. Calibration is required to establish the maxi-
mum amount of usable moisture in the soil. The sensor system will then
recognize this soil moisture level as the maximum capacity. From this xed
reference point, the sensor system can decide when the soil moisture has
dropped enough to allow watering.
To manually calibrate the Precision Soil Sensor at any time, for example, if
the sensor has been moved to a dierent location in the landscape, or has
been replaced since the initial installation, use
the following procedure:
• Approximately2to4hourspriortoperform-
ing calibration, run an automatic or manual
watering operation to thoroughly irrigate the
sensor zone.
Note: The objective is to apply as much water
as possible to the sensor zone – up to the point
of runo, then allow the soil drain down 2 to 4
hours to establish the maximum moisture-
retention capacity.
• PresstheMenu button to display CA(sys-
tem calibration mode).
• PresstheMinus button to display 00.
• PressandholdthePlus button (several
seconds) until the Green LED indicator and
hourglass symbol begins ashing. The Red
LED will be on.
•
The new calibrated moisture % value will be
displayed automatically within 10 minutes.
SensorLearnMode
The Precision Soil Sensor receiver has been paired (matched) at the factory
to a unique sensor identication code, to prevent communication with
other sensors that may be installed within reception range. If either the
receiver or sensor is replaced, the frequency pairing procedure is required
to enable wireless communication. The receiver Learn mode is provided to
accomplish the pairing procedure.
To pair the receiver to the sensor, use the following procedure:
•
Press and hold the Bypass button
(without releasing) until the receiver switches
to the Learn mode and the display shows LE.
The Green LED will turn on, and the Red and
Yellow LEDs will begin blinking.
• If the sensor is operational (batteries installed),
paring will occur automatically the next
time a signal is sent from the sensor (within
10 minutes). The receiver will automatically
return to the Normal Operating mode when
communication is established.
• If the sensor batteries have not been installed,
automatic pairing will occur upon battery
installation. Press the Bypass button
to return to the Normal Operating mode.
SensorSystemCalibrationandLearnModes