Rauch QUANTRON-A Instruction Manual - page 56
Operation QUANTRON-A
4
50
4.6.1
Forward speed calibration
The speed calibration is the basic requirement for an exact spreading result. Fac-
tors such as tyre size, a different tractor, all-wheel drive, slippage between tyres
and ground, ground characteristics and tyre pressure influence the speed meas-
urement and therefore the spreading result.
Preparing the speed calibration:
The exact calculation of the number of speed pulses over 100m is very important
for the precise discharge of the fertiliser quantity.
Conduct the calibration on the field. This reduces the influence of the ground
characteristics on the calibration result.
Determine a
100 m
long reference track as precisely as possible.
Switch on four-wheel drive.
Fill only half of the machine, if possible.
Access the forward speed calibration:
In the QUANTRON-A control unit, you can save up to
4 different profiles
for the
type and number of pulses. You can assign names to these profiles (e.g. tractor
name).
Before spreading, check that the correct profile is opened in the control unit.
Figure 4.15:
Tractor (km/h) menu
[1] Tractor type
[2] Transducer display for the speed signal
[3] Display of number of pulses over 100m
[4] New calibration submenu
[5] Icons for memory locations of profiles 1 to 4
1.
Open the
Machine settings > Tractor (km/h)
menu.
The displayed values for name, origin and number of pulses refer to the pro-
file highlighted in black.
2.
Press the function key (
F1-F4
) under the memory location symbol.
1
2
4
5
3