Row sample calibration – Great Plains YP40F Operator Manual User Manual
Page 30
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YP2425F/YP4025F
Great Plains Manufacturing, Inc.
403-362M
2013-03-25
Row Sample Calibration
This method requires 16 or 24 containers each with a
capacity of about 1% of a hectare or acre, and a scale
capable of precisely weighing the heaviest empty
container plus the sample size (or all the containers at
once).
7.
Turn on the seed monitor system. Although not used
for calibration, you need the monitor to display fan
rpm.
8.
Weigh the empty sample containers (the “tare”).
Refer to Figure 12
9.
Place the collection containers under each coulter
applicator.
Refer to Figure 13
10. Start the hydraulic fan. Adjust the rpm to normal field
values.
Machine Damage Risk:
Do NOT turn the crank clockwise, or the gearbox may be
damaged. Turn the crank only counter-clockwise (as seen from
planter left, facing planter right).
11. Turn the crank counter-clockwise until material is
consistently appearing in the collection containers.
Stop cranking.
12. Empty the collection containers.
13. Turn the crank for the number of revolutions
necessary to simulate the area to sample, as shown
in chart on page 25.
14. Calculate the material rate per the instructions and
15. If the results differ from your target by more than a
few percent, adjust the gearbox setting per the
instructions on page 28.
Then measure another sample starting at step 13.
Row Sample Close-Out
16. Pin the gearbox adjuster
in position
17. Remove the calibration crank.
Figure 12
Row Sample Collection
31102
Figure 13
Calibration Crank (Row)
31000
3
3