Great Plains Air-Pro Meter Ultra Test Stand Kit - Manual (Page 7)

Meter Pressurization Front Page Part Lists Great Plains Manufacturing, Inc. 7
09/27/2011 Front Page Part Lists 403-533M
Meter Pressurization
Note: These are suggested initial (starting) pressures.
Higher or lower pressure adjustments can be
expected to maximize singulation.
Initial Meter Pressurization: Cotton
1.5 inches of water (any seed density)
Initial seed inlet Shutter: 2
Initial Meter Pressurization: Milo
1.5 inches of water (all disk, any seed density)
Initial seed inlet Shutter: 1
Initial Meter Pressurization: Soybeans
2.0 inches of water (84 cell disk, any seed density)
3.0 inches of water (168 cell disk, any seed density)
Initial seed inlet Shutter: 2
Initial Meter Pressurization: Sunflowers
817-851C Sunflower Oil Large
8500 seeds/pound (or fewer)
8500-7000 s/lb 1.25 inches of water
7000-5500 s/lb 1.75 inches of water
5500 s/lb and fewer 2.25 inches of water
Adjust pressure as needed to achieve desired population.
Initial seed inlet Shutter: 2
Null4:
Initial Meter Pressurization: Round Corn
Reading a Corn Pressure Chart
1.
Pick the chart based on seed shape (flat, round).
Example: large round corn
2. Pick a line based on seed size (large, small).
Example: the right line below
3. Find the seed density on the bottom scale.
Example: 1260 seeds/pound
4. Read the suggested starting pressure on the left
scale, where the line (example shown as dotted
gray) intersects the density.
Example: 3.4 inches of water
Initial seed inlet Shutter for corn is: 3
29725
( y )
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
Seeds Per Pound
Unit Weight (80K)
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
Example
Null4:
Meter Pressur
ization in inches of W
ater
Null4:
Meter Pressur
ization in inches of W
ater
Null4:
29725