GREAT PLAINS YP1225A, Manual

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YP1225A and YP1625A Table of Contents Index Planting Overview
Great Plains | 401-625B | 6/19/19 11
Metric Units
Example: large round corn, 2800 seeds/kg (seed density)
Use the line on the right of the chart, under “Round Corn-Large” (based on the seed size).
Initial meter pressurization is 3.4 inches of water
The example is shown as dotted gray lines on the chart below.
Round Corn
Flat Corn
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
900 1100 1300 1500 1700 1900 2100 2300 2500 2700 2900 3100
Linear (Round Corn Large)
Linear (Round Corn Small)
Meter Pressure (in/w
a
ter)
5
4.5
3.5
3
2.5
2
1.5
1
0.5
0
88.9 72.7 61.5 53.3 47.1 42.1 38.1 34.8 32.0 29.6 27.6 25.8
4 817-794C & 817-796C
Round Corn-Large
817-795C & 817-797C
Round Corn-Small
Meter Pressure (in/w
a
ter)
Disks
Disks
Example
Exam
ple
6800 6400 6000 5500 5100 4600 4200 3700 3300 2900 2400 2000
Seeds Per Kilogram
29725
Meter Pre
ssurization
in
in
ches of W
a
te
r
Meter Pressurization
in
in
ch
es
of
W
ate
r
Pressure/Seed Comparison
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
900 1100 1300 1500 1700 1900 2100 2300 2500 2700 2900 3100
Meter Pressure (in/w
a
ter)
Linear (Flat Corn Large)
Linear (Flat Corn Small)
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
88.9 72.7
61.5
53.3
47.1 42.1
38.1 34.8 32.0 29.6 27.6 25.8
817-836C & 817-838C
Flat Corn-Large
817-795C & 817-797C
Flat Corn-Small
Meter Pressure (in/w
a
ter)
Disks
Disks
29726
6800 6400 6000 5500 5100 4600 4200 3700 3300 2900 2400 2000
Seeds Per Kilogram
Meter Pre
ssurization
in
in
ches of W
a
te
r
Meter Pressurization
in inches
of W
ater