10.
SOWING CHART
Fig. Sowing chart.
A field test is by far the most reliable way of doing a calibration test. By carrying out the field test
the effect of variations of tyre diameter to the sowing quantity can be taken into account.
Procedure
Measure up an operating distance equivalent to one are, for small seeds 2 or 3 area, which for the 2
models in question is as follows
CK3000
CK 4000
Distance, 1 a
33,3 m
25 m
Distance, 2 a
66,7 m
50 m
Distance, 3 a
100 m
75 m
Drive the machine to the start of the distance. Place the calibration test troughs under the feeding
chambers. Rotate the drawing wheel some turns to make sure that the feeding chambers are feeding
Empty the contents of the trough into the hoppers.
Lower the machine to its working position and drive over the measured distance. Weigh the amount
of seed collected in the trough and multiply it to give the rate in kg/ha.
Should adjustments prove to be necessary, proceed in the manner described in the cranking test.
NOTE! The manufacturer takes no responsibility for the effect of wheel dimension tolerances on
the sowing amount. An error can be proved by a field test. When sowing small seeds the vibration
of the machine during the operation can effect on the sowing amount. That is why carry out always
the field test when sowing small seeds, e.g. turnip rape and rape.
