Operator`s manual

Operation
Simplicity Australia Page 3.10 Version 1.0
Step 3. Determine Corrected Tyre Circumference
Corrected Tyre Circumference is the Actual Tyre Circumference
divided by the ‘step up’ ratio of the ground drive mechanism of the
Air Seeder. Record the Corrected Tyre Circumference in the space
provided on this page.
The ‘step up’ ratio (which is usually 3.0) is
stamped on the Serial Number plate
located on the rear left corner of the Air
Seeder
Step 4. Determining the number of Calibration Handle
turns per hectare.
The number of calibration handle turns per hectare is needed to
accurately measure and set the desired sowing rates.
To determine the distance traveled in metres to cover one hectare,
divide 10000 by the implement working width in metres
Divide the distance traveled by the corrected tyre circumference in
metres to obtain the number of calibration handle turns per hectare.
Calibration handle turns per hectare equals
10000 ÷ Implement Planting Width (m)
Corrected Tyre Circumference (m)
Calibration Summary Record Results
Implement Planting Width
Actual Tyre Circumference
Corrected Tyre Circumference
Calibration Turns per Hectare
1 hectare = 10000
square metres