micro-trak MT-2400 LR, Справочное руководство

Страница: 31 / 52

Setting Individual Boom Width
In order to accurately measure the number of gallons (liters)
applied per acre (hectare) it is important to determine the
correct “working” width. The “working” width is the width
of ground being affected by any operation. This should be
measured to the nearest inch (millimeter).
Your “working” width will vary depending on the type of
equipment you are using and the method of application.
For example, if you are broadcast applying chemicals your
“working” width will be the number of nozzles times the
nozzle spacing in inches (mm). For example, if you have 20
nozzles spaced at 20 inches, the working width is 400 inches.
See Illustration 35.
31
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. Turn all boom switches OFF.
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 the word “CAL” does not appear, that 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 fine­tuning the wheel cir cum fer ence (CIRC) value,
turn to page 32 and 33.
Working Width
Illustration 36 Illustration 35
Calibration
(cont)
Drive Shaft Speed Sensor Calibration
Banding Application Calibration
In banding applications, you will still need to enter the
total width of each boom section so that area counts
correctly, but you must also calculate the percentage of
your total width the band is covering and reduce your target
rate to match. For example, if you are planting with an
eight-row planter with 30-inch spacing, your total working
width, regardless of the width of bands, is 240 inches (8 x
30 inches). Now, for purposes of this example, you have
eight 12” bands. Your total band coverage is 96 inches
(8 x 12 inches). Based on that, your band is covering 40
percent of your total width (96 divided by 240). If you want
to apply 20 GPA in the band, enter 8 GPA as your target rate
(40 percent of 20 GPA). See Illustration 36.
Working Width