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Quality for Professionals
7.5 Calibration test for seed rate / regulating the seed volume
When performing the seed rate calibration test, the calibration bag, which comes as
standard, is used. This allows you to very easily and conveniently carry out the
calibration test. Instructions on attaching the calibration bag are given under point
5.7.
Note: To determine the required sowing volume, you should calibrate the seed rate.
Proceed as follows to carry out a seed rate calibration test:
1. Attach the calibration bag to the spreader and
secure it with the magnets and the cord (see
illustration).
2. Using the formula below, calculate the required
sowing volume per minute.
3. The speed required to reach the required
sowing rate is contained in the appropriate
setting charts (see point 8).
4. The determined speed for the spreader plates and the slide valve opening is
adjusted via the control module (see point 6.3).
5. The seed rate calibration test then runs automatically (for exactly one minute),
and the seed runs into the calibration bag, without loss.
6. The calibrated and collected spreading material must now be weighed.
7. The required setting can be found by adjusting the slide valve opening and by
calibrating the seed once more.
8. The points listed must be repeated until the required sowing rate has been
reached.
9. Once work has begun, you should field check the sowing rate. Special
attention should be paid to the driving speed, the sowing rate and lateral
distribution.
Fig.: 15
