TeeJet 844-AB, User Manual

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844-AB Sprayer control 11
Software 4.03
NOTE:
If a pressure transducer is not installed on
the system, skip this step by pressing the
Program key. Leave the default value at
“145 PSI/10 Bar”.
Speed Sensor Calibration
NOTE:
During Speed Calibration, the 844-AB will
automatically sense whether a Wheel
Speed or Radar Speed Sensor is being
used.
Proximity/Magnetic Pulses
The speed sensor must be calibrated in order
to provide the proper speed and area
readings. The value is determined by the
number of pulses generated by the speed
sensor in 300 feet (100 meters), or by
manually entering the number.
Figure 4-14: Proximity/Magnet Pulses
250 250 250 250
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Automatic Calibration:
To automatically calibrate the speed sensor,
mark a distance of exactly 300 feet (100
meters). Press the Plus and Minus keys
simultaneously to clear the contents of the
display and activate auto calibration mode.
“CAL” will be displayed on the lower right
of the screen.
Figure 4-15: Speed Sensor Automatic
Calibration
cal cal cal cal
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Drive toward the initial point of the of
designated 300 feet (100 meters). At the
starting location, press the Plus key once to
begin the calibration process. Continue driving
the course. The 844-AB will count the pulses
as the sprayer moves. The speed at which the
vehicle travels is not important. As the ending
point is reached, press the Plus key again.
The console will display the speed calibration
number.
NOTES:
The auto speed calibration process should
take place in a field-like environment with
the sprayer tank at least half full.
It is recommended to repeat the automatic
speed calibration process at least twice
and use an average of the speed
calibration numbers.
Figure 4-16: Speed Sensor Automatic
Calibration (Continued)
157
157 157
157
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cal cal cal cal