Great Plains 3S-5000HDF Material Rate - Manual (Page 23)

Great Plains Manufacturing, Inc. Table of Contents Main Box Rates Small Seeds Rate 21
2012-06-04 Table of Contents Main Box Rates 195-325B
9. Turn gauge wheel until one acre or hectare is tallied
on acremeter (see table at right). While turning,
check that cups have ample seed coming into them.
10. Weigh metered seed. Subtract initial weight of
container(s).
11. Divide the net seed weight by three. Multiply by
number of openers on your drill to determine the
total of pounds-per-acre seeded.
12. The Seed Rate Handle scale is a percentage of
meter opening, and is quite linear near scale center.
Calculate a new scale setting based on the test.
Note: You may want to repeat calibration procedure if
your results varied greatly from the Seed Rate
Chart, or if you must operate near the ends of the
Seed Rate handle scale (0-20 or 90-100).
13. Set the center and right drill sections to match the
now-calibrated left section.
14. With calibration complete, Reinstall fertilizer chain (if
removed), reconnect seed hoses, and lower gauge
wheel to ground.
When drilling, check seeding rate by noting acres drilled,
amount of seed added to drill and seed level in drill box.
If you are seeding more or less than desired, adjust rate
slightly to compensate for field conditions.
Calibration Gauge Wheel Rotations
Drill Model Per Acre Per Hectare
2S-2600/F/HD/HDF 203 502
3S-3000/F/HD/HDF 175 432
3S-4000/F/HD/HDF 130 321
3S-5000/F/HD/HDF 104 271
For example:
the three containers weighed a total 2.2 lbs after test:
0.7 lbs net
0.7 2.2 1.5 – =
NetWeight GrossWeight ContainerWeights – =
For example:
your 7.5 inch drill has 63 rows:
14.7 lbs/ac
14.7
0.7
3
------ 63 × = MeasuredRate
NetWeight
3
------------------------- RowCount
×
=
For example:
new scale:
34
34
10
14.7
--------- 50 × =
NewScale
TargetRate
MeasuredRate
--------------------------------- OldScale
Ч
=