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Quality for Professionals
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7.8 Calibration test for seed rate / regulating the seed volume
To determine the required sowing volume, you should calibrate the seed rate.
Proceed as follows to carry out a seed rate calibration test:
1. Remove the turning plate located above the
partitioning plates and below the fan (see
illustration).
2. Attach the turning plate to the seed drill and secure
it with the star knob bolts. (see illustration).
3. When calibrating the seed rate, please use a sack
or another container to catch the seed.
4. Using the formula under Point 7.7, calculate the
required sowing volume per minute.
5. Please refer to the respective sowing tables for the
speed required to reach the desired sowing rate
(Seed rate calibration test / Regulating the seed
volume).
6. Use the control module to set the calculated speed
for the sowing wheel (you can find precise
instructions in the original operating instructions for
the control module 5.2).
7. The seed rate calibration test is now run automatically (for exactly one
minute), during which time the seed runs over the turning plate without loss.
8. You must now weigh the turned and caught seed.
9. The required setting can be found by correcting the speed for the sowing
wheel and by turning the seed once more.
10. You can also adjust the sowing volume slightly using the ground flap (for
sweeper adjustment, see Ground flap (sweeper adjustment).
11. The points listed must be repeated until the required sowing volume has been
reached.
12. After commencing work, you should field check the quality of sowing. Special
attention should be paid to the driving speed, the sowing volume and the
distribution of the baffle plates.
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