MIN FLOW: The pur pose of this calibration parameter is to
prevent the system from applying below the recommended
minimum rate for the nozzles. Enter the minimum flow rate
in gal lons per minute (li ters per minute) based
on the nozzles being used, for the en tire boom
on the sprayer. DO NOT
enter the actual flow rate
of your spray application.
For example, if the min i-
mum flow rate for the nozzle you are using is .22 GPM at their
minimum recommended pres sure and your boom has 20
nozzles, enter 4.4 as the MIN FLOW value (.22 x 20 = 4.4). The
system WILL NOT ap ply at a rate lower than this value when
spraying in AUTO. This value should be checked/changed for
each different nozzle that you use.
APPLICATION NOTE: In certain situations, your ground
speed may be slow enough to result in over application. In
other words, based on ground speed, the actual flow rate
has dropped to the calibrated minimum flow rate.
20
Drive Shaft Speed Sensor Calibration
NOTE: If you have mounted the magnetic speed sen sor on
a wheel, skip this step and go on to Fine Tuning Speed/
Distance Calibration Values.
Because of the difference in wheel-to-drive shaft ra tios, it is
difficult to determine a calibration value for installation on
a drive shaft by measuring a wheel. You must start with an
estimated calibration value and then fine-tune the cal i bra-
tion.
1. Place the console in HOLD.
2. Press and hold the “CAL” key for three sec onds to
en ter the cal i bra tion mode. Turn the dial to “CIRC”
po si tion. The display will alternate between the wheel
circumference (CIRC) and dis tance values at about three-
sec ond intervals. (When the word “CAL” appears, the
num ber dis played is the wheel cir cum fer ence (CIRC)
value. When “CAL” does not appear, this is the dis tance
value.)
3. When the display shows wheel circumference (“CAL” is
displayed) , use the “+” or “-” key to adjust the displayed
value to any number be tween 10 and 15 (255mm to
380mm). When the num ber shown on the dis play
match es the de sired value, you have ar rived at the
estimated calibration val ue. Exit “CAL” by press ing and
holding the “CAL” key for three seconds.
NOTE: If you let go of the “+” and “-” keys while you are
ad just ing the CIRC value, the console will wait to make
sure you are finished. After 64 sec onds, the dis play will
start al ter nat ing be tween the wheel cir cum fer ence (CIRC)
and distance values again. Make sure you know which
value you are adjusting.
NOTE: For fine-tuning the wheel cir cum fer ence (CIRC) value,
turn to page 26.
Calibration (cont)
Entering Calibration Values (cont)
MIN
FLOW
FLOW
RATE
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