11.3 Deviations between the preset and actual sowing rates
Possible causes that can lead to a deviation between the preset and
actual sowing rates:
• In order to record the worked area and the required seed spread
rate, the AMATRON 3 requires the radar impulses over a cali-
bration distance of 100 m.
The field surfaces change during the work - for example, chang-
ing from dry, light ground to wet, heavy ground.
As a result, the calibration value "Imp./100 m" may change.
If there are differences between the preset and actual sowing
rates, the calibration value "Imp./100 m" has to be re-
by travelling a measured distance (see the AMATRON 3 operat-
ing manual).
• When seeding with moist dressed seeds, differences between
the preset and actual sowing rates can come about, if there is a
period of less than 1 week (2 weeks recommended) between the
dressing and seeding.
• A defective or wrongly set dosing lip (Fig.
192/1) will cause dosing errors.
Set the dosing lip so that it is lying lightly up
against the dosing roller (Fig. 192/2).
192
174 Cirrus BAH0049-1 09.14
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