Find your chart and rate, Dual hopper considerations, High rate flute considerations – Great Plains NTA3007HD Operator Manual User Manual
Page 77: Adjustment for dual metering / high rate flutes, Chartrate fieldrate lookupfactor, Calrate fieldrate twinfactor ч, Adjustments 73, Target rate adjustments, 2 stars (std.), 3 stars
Adjustments 73
04/04/2011
166-207M
Find Your Chart and Rate
Standard “2 star” rates are in the main section of the
Seed Rate manual. “3 star” and “4 star” rates are in the
Appendix.
If you are planning to operate both hoppers, perform the
setup steps separately for each hopper, as the configura-
tions (including stars) may be completely different.
1.
Confirm that the chart is for the material and star
configuration you have.
2.
Find your target population or application rate.
Note: If you have a choice of charts, for most consistent
results, pick one that results in a variable rate gear-
box value between 30 and 70.
Dual Hopper Considerations
If you are applying the same material from both hoppers,
what chart rate to start with depends on whether you will
run both meters simultaneously, or sequentially (run one,
then the other).
The charts do not account for “twin” hopper operation. If
both hoppers are metering the same material, at the
same rate, and at the same time, the output is twice the
chart rate. If run sequentially, or metering different mate-
rials at the same time, treat them as single-hopper oper-
ation.
High Rate Flute Considerations
“High Rate” charts are provided for some seeds, but the
charts do not cover all possible combinations of high-rate
flutes. You can use any standard-rate single-hopper
chart.
Adjustment for Dual Metering / High Rate Flutes
To find the initial chart rate for dual hopper and/or alter-
nate flutes:
To find the rate to check at calibration:
Null4:
Great Plains Man
ufactur
ing, Inc.
Seed Rates
27
04/23/2010
167-085B
Wheat (2 Star
s)
Higher r
ate Wheat char
ts, requir
ing optional flutes
, are on page
37 and page
38
Notes:
Stated
seed
density
is measured,
and not
customar
y commodity
call
weight. If y
our seed has a significantly diff
erent density
, see “
Den-
sity Adjustment
” on page
30.
Table rates are f
or application from a single hopper at a time
(whether or not both are loaded with the same mater
ial). F
or appli-
cation of the same mater
ial from both hoppers sim
ultaneously
, do
not use the target r
ate data. First divide the target r
ate b
y two, and
use the setting f
or that half r
ate. Use that target r
ate for calibr
ating
each meter
.
Final Drive Range Gear
s
Stars Per Outlet
Seed Density
Remarks:
l
e
h
s
u
b
r
e
p
s
d
n
u
o
p
5
.
1
6
2
e
g
n
a
R
h
g
i
H
See table footnotes
.
54T Driving; 17T Driven
(standard)
0.79 kg/liter
Seed Rate
e
t
a
R
d
e
e
S
e
t
a
R
d
e
e
S
a
h
/
g
k
c
a
/
s
b
l
a
h
/
g
k
c
a
/
s
b
l
a
h
/
g
k
c
a
/
s
b
l
0
0
0
-
100.2
112.3
46
77955
238.5
267.3
73
81929
16.4
18.4
20
75699
104.7
117.3
47
77990
243.7
273.1
74
82307
18.4
20.6
21
75902
109.2
122.4
48
78027
248.8
278.9
75
82712
20.5
23.0
22
76092
113.9
127.6
49
78067
253.8
284.5
76
83146
22.7
25.4
23
76268
118.5
132.9
50
78110
258.8
290.1
77
83610
25.0
28.0
24
76431
123.3
138.2
51
78159
263.6
295.5
78
84106
27.4
30.7
25
76582
128.2
143.7
52
78212
268.4
300.8
79
84636
29.9
33.5
26
76722
133.1
149.2
53
78272
273.0
306.1
80
85202
32.5
36.4
27
76850
138.0
154.7
54
78338
277.6
311.1
81
85806
35.2
39.5
28
76967
143.1
160.4
55
78411
281.9
316.0
82
86451
38.0
42.6
29
77074
148.2
166.1
56
78493
286.2
320.8
83
87138
40.9
45.9
30
77172
153.3
171.8
57
78583
290.2
325.3
84
87871
43.9
49.2
31
77260
158.5
177.6
58
78684
294.1
329.7
85
88653
47.0
52.7
32
77341
163.7
183.5
59
78794
297.8
333.9
86
89486
50.2
56.3
33
77413
169.0
189.4
60
78916
301.4
337.8
87
90374
53.5
60.0
34
77479
174.3
195.4
61
79050
304.6
341.5
88
91322
56.9
63.7
35
77538
179.6
201.3
62
79197
307.7
344.9
89
92332
60.4
67.6
36
77591
185.0
207.4
63
79357
310.5
348.1
90
93410
63.9
71.7
37
77640
190.4
213.4
64
79532
313.1
350.9
91
94560
67.6
75.8
38
77683
195.8
219.4
65
79723
315.4
353.5
92
95789
71.4
80.0
39
77723
201.2
225.5
66
79930
317.4
355.8
93
97102
75.2
84.3
40
77760
206.5
231.5
67
80155
319.1
357.7
94
98506
79.2
88.7
41
77795
211.9
237.6
68
80398
320.5
359.2
95
100008
83.2
93.3
42
77828
217.3
243.6
69
80660
321.5
360.4
96
101617
87.3
97.9
43
77859
222.7
249.6
70
80943
322.2
361.1
97
103342
91.5
102.6
44
77891
228.0
255.5
71
81248
322.5
361.5
98
105194
95.8
107.4
45
77923
233.3
261.5
72
81576
322.4
361.4
99
107184
Wheat
(2 St
ars)
31308
Gearbox
Setti
ng
Cal.
Const.
Gearbox
Setti
ng
Cal.
Const.
Gearbox
Setting
Cal.
Const.
Target Rate Adjustments
Hoppers for This Material
Single or
Sequential
Dual
Simultaneous
2 Stars
(std.)
Chart would be 1x rate
LookupFactor = 1.0
TwinFactor = 1.0
Chart would be 2x rate
LookupFactor = 0.5
TwinFactor = 0.5
3 Stars
Chart would be 1.5x rate
LookupFactor = 0.67
TwinFactor = 1.0
Chart would be 3x rate
LookupFactor = 0.33
TwinFactor = 0.5
4 Stars
Chart would be 2x rate
LookupFactor = 0.5
TwinFactor = 1.0
Chart would be 4x rate
LookupFactor = 0.25
TwinFactor = 0.5
Null4:
For Example:
Drill: NTA907HD-4875
Crop: Barley (no high rate flute chart available)
Field rate: 500 kg/ha (above 2 flute chart coverage)
Flutes: 3 star
Metering: simultaneous dual hopper
165 = 500 x 0.33
Lookup the settings for 165 kg/ha
ChartRate
FieldRate
LookupFactor
×
=
Null4:
Continuing the example:
Field rate: 500 kg/ha
250 = 500 x 0.5
Calibrate each meter to 250 kg/ha
CalRate
FieldRate
TwinFactor
Ч
=