844-AB Sprayer control
12
Software 4.03
NOTE:
Once the automatic speed calibration
process has been activated, no other
functions will operate until the console
receives speed pulses for calibration. To
deactivate automatic calibration mode,
press the Plus key twice.
During the automatic calibration process,
the 844-AB will automatically sense
whether a proximity/magnetic or radar
ground speed sensor is installed. If a
manual entry is preferred, refer to MANUAL
CALCULATION.
Manual Calculation:
To manually calculate the proper value for
Wheel Speed Sensor pulses, the
circumference of the wheel to which the
sensor is mounted must be known. It can be
measured by marking the tire and measuring
the distance covered as the mark makes one
full revolution. Once the number is known, use
the following formula:
The result can be entered instead of using the
automatic calibration method. Use the Plus or
Minus keys to adjust the value. Press the
Program key to save the value and advance to
the next program step.
Radar Speed Pulses
AUTOMATIC CALIBRATION:
To automatically calibrate the radar 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 to activate auto calibration mode.
Once auto calibration mode is activated,
“RAD” will be displayed on the lower left of the
screen.
Figure 4-17: Radar Speed Sensor Automatic
Calibration
rad
rad
rad
rad
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P
RO
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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 radar speed calibration number.
NOTES:
The radar 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 radar
speed calibration process at least twice
and use an average of the speed
calibration numbers.
MANUAL CALCULATION:
It is not possible to manually calculate the
calibration value of a radar. However, the
value can be entered manually if it is known
from a prior calibration. To manually enter the
radar calibration value, press the Auto/Man
key to enter Radar mode. Once radar
calibration mode is activated, “RAD” will be
displayed on the lower left of the screen. Use
the Plus or Minus keys to adjust the value.
Press the Program key to save the value and
advance to the next program step.
Summary of Contents for 844-AB
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