Ground Drive - Calibration
Page
41
10/09
Introduction to Variator Setting Guide
The Variator Setting Guide should be
used to approximate the variator setting
when calibrating. Variations in product
weight and metering performance will
generally vary and for this reason it is
necessary to always calibrate before
seeding.
To use the ‘Variator Setting Guide’, turn
to the page for the appropriate material
being calibrated.
Special instructions relevant to the
particular material will be listed at the top of
each page. For example the Faba Beans
instruction tells the operator to use a
Large
Seeds/Broad Beans
metershaft assembly.
There are 3 charts on each page.
Each chart represents the appropriate
setting for the number of meterwheels fitted
to the SR Meterbox metershaft assembly.
Example
The approximate variator setting is
required for metering wheat at 60kg/ha from
a 12 metre width implement through a SR
Meterbox fitted with 6 meterwheels. By
referring to page 38 we can see that there
are no special changes required to the
metering system. The bottom chart labeled
‘SR Meterbox / 6 meterwheels fitted’ should
be used.
By reading across and up the chart we
can see that the recommended setting is
2.4.
This figure is a guide only and will
need to be checked by the normal
calibrating procedure
.
VARIATOR SETTING GUIDE
(INDICATIVE ONLY)
MATERIAL
WHEAT
MATERIAL BULK DENSITY
850
(kg/cubic metre)
SPROCKET RATIO
STANDARD
SR Meterbox / 3 Meterwheels fitted
100
4.1
5.4
6.8
8.2
9.5
------- ------- ------- -------
APPLICATION
80
3.3
4.3
5.4
6.5
7.6
8.7
9.8
------- -------
RATE (kg/ha)
60
2.4
3.3
4.1
4.9
5.7
6.5
7.3
8.2
9.0
PER BIN
40
1.6
2.2
2.7
3.3
3.8
4.3
4.9
5.4
6.0
20
0.8
1.1
1.4
1.6
1.9
2.2
2.4
2.7
3.0
10
------- ------- ------- 0.8
1.0
1.1
1.2
1.4
1.5
6
8
10
12
14
16
18
20
22
PLANTING WIDTH (metres)
SR Meterbox / 4 Meterwheels fitted
100
3.1
4.2
5.2
6.2
7.3
8.3
9.4
------- -------
APPLICATION
80
2.5
3.3
4.2
5.0
5.8
6.7
7.5
8.3
9.2
RATE (kg/ha)
60
1.9
2.5
3.1
3.7
4.4
5.0
5.6
6.2
6.9
PER BIN
40
1.2
1.7
2.1
2.5
2.9
3.3
3.7
4.2
4.6
20
------- 0.8
1.0
1.2
1.5
1.7
1.9
2.1
2.3
10
------- ------- ------- ------- 0.7
0.8
0.9
1.0
1.1
6
8
10
12
14
16
18
20
22
PLANTING WIDTH (metres)
SR Meterbox / 6 Meterwheels fitted
100
2.0
2.7
3.4
4.1
4.8
5.4
6.1
6.8
7.5
APPLICATION
80
1.6
2.2
2.7
3.3
3.8
4.3
4.9
5.4
6.0
RATE (kg/ha)
60
1.2
1.6
2.0
2.4
2.9
3.3
3.7
4.1
4.5
PER BIN
40
0.8
1.1
1.4
1.6
1.9
2.2
2.4
2.7
3.0
20
------- ------- ------- 0.8
1.0
1.1
1.2
1.4
1.5
10
------- ------- ------- ------- ------- ------- ------- ------- 0.7
6
8
10
12
14
16
18
20
22
VARSETT1SR
PLANTING WIDTH (metres)
60kg/ha
application rate
12 metres
planting width
Fig. C11 Variator Setting Guide.
Fig. C12 Enlargement.
