25
Subject to technical change without notice
09.2003 09.2003
46
47
44
45
Now move the marker arrow to the
line ‘NUDGE CAL. FACTOR’ and press
<ENTER>.
Next enter the expected value for 1 ha, in
our example 200 kg (g. 44).
Conrm the value with <ENTER>.
The actual amount used is now requested:
Now enter the previously calculated value
(208 in the current example).
Complete the entry by pressing <ENTER>.
The control system now displays a sowing
error due to mechanical effects, and asks
whether it should compensate for the
current seed type. The following display
appears (g. 45):
In the measurement in the example, there
has therefore been 4% too much used.
Press <ENTER> now to conrm the value.
The display changes back to the seed type
selection, and displays the current seed
type.
Note the value for ‘kg/rev’ in g.
46compared with g. 47:
The value has now been automatically
corrected for the current seed type. This
measurement is not absolutely necessary,
as the errors which occur are relatively
small. Even during the calibration test, the
difference will be difcult to ascertain.
It is however sensible to use the
measurement over long runs, where the
seed hopper needs to be lled several times,
and where signicant deviations in the feed
(ow behaviour) over large areas, caused by
the mechanical effect of the seed type, are
observed in comparison to the calibration
test.
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