Erreur ! Style non défini.
Erreur ! Style non défini.
40
1/2
Working width
1/2
1
2
3
•
Make sure individual containers are level. Containers set at an angle can
lead to measuring errors.
•
Set the fertiliser spreader at the same height on the left- and right-hand si-
des in accordance with the information in the spreading charts, paying at-
tention that the mounting height is taken from the top edge of the collecting
trays.
•
Before testing, check the functioning and condition of the spreading ele-
ments (discs, vanes, metering slides).
•
Carry out a calibration check. Adjust the left- and right-hand metering slides
according to results obtained, and lock in place. Undertake the spread pat-
tern test using this aperture setting. If it is felt that the fertiliser collected in
the trays is not enough for a clear analysis, merely travel over the trays twi-
ce. Do not change the metering slide aperture.
•
Select only a tractor speed of between 3 and 4 km/h so as to keep tractor
and spreader as steady as possible. Keep the metering slides to the same
setting. It is irrelevant to the test that the actual application rate is higher,
as this is only a result of the slower tractor speed for test purposes. Keep
the speed of the tractor constant throughout the test.
•
Spread along the tramlines 1 - 3, one after the other. Open the open/close
shutter slides approx. 10 m before reaching the collecting trays and close
approx. 30 m after passing them. If the collected volume is insufficient, re-
peat all 3 passes.
•
Pool the contents of each pair of containers and pour into the respective
measuring tubes i.e. left-hand pair in left-hand tube, middle pair in middle
tube, right-hand pair in right-hand tube. The evenness of the spread pattern
can now be judged from the level in each tube.
