14
Quality for Professionals
7.7
Regulation of the seed rate (spread rate)
Proceed as follows:
The required settings can be found in the
corresponding setting chart.
Loosen the knurled nut and set the metering slider to
the required scale position.
Position 0: closed; Position 10: fully open.
Fix the knurled nut again.
7.8
Calibration test
1.
Determine the required spread rate using the following formula:
desired spread rate [kg/ha] x forward speed [km/h] x working width [m]
= Weight
[kg/min]
600
Example:
To use imperial units (e.g. in the U.S.), use the following formula:
2.
To perform the calibration test, the transport box or a bag can be used, which is
then put on at the front over the spreader. If you use the box, cut out one of the
side walls and put the spreader in it.
3.
The required settings can be found in the corresponding setting chart (see Chapter
9 Setting charts).
4.
Using the control box, set the approximate speed of the spreading disc that should
be used to spread on the field. Pre-select the required scale value for the metering
slider.
Selection of the correct speed is important because it also affects the calibration
quantity.
5.
Press and hold the On/Off button of the control box.
6.
Press the plus button.
The spreading disc is already running at the currently set speed. The slider will
be opened for exactly 1 minute.
During the calibration process, the set speed will be shown flashing on the
digital display.
The calibration test will now be performed while the spreading material is
collected without losses.
By pressing one of the "Plus", "Minus", "Slider open" or "Slider closed" buttons, the
calibration procedure can be stopped.
While the calibration procedure is active, the control box
CANNOT
be switched
off using the On/Off button.
5 [kg/ha] x 12 [km/h] x 12 [m] = 1.2 [kg/min]
600
desired spread rate [lbs/acre] x forward speed [mph] x working width [ft]
= Weight
[lbs/min]
495
Example:
30 lbs / acre x 10 mph x 20 ft
= 12.12 lbs/min
495
Fig.: 9
