SPREADMAX TPL750
8
Phone 0800 4 VOGAL (0800 486 425)
E:
W:
www.rataindustries.co.nz
CALIBRATION
To precisely calibrate the machine, carefully read and perform the following instructions:
1.
Place a measured amount of fertiliser in the hopper, e.g. ……..kg (A)
2.
Choose an aperture setting to suit the rate required for the type of fertiliser being used e.g. Setting
6 (B).
3.
Obtain the desired travel speed (12 to 15 km/hr) and open the aperture to preset setting 6, e.g.
200 metres (C). Note: Maintain a constant speed and coverage width, e.g. 8 metres (D).
4.
Check the effective spread coverage width, e.g. 8 metres (D).
5.
Measure the amount of fertiliser left in the hopper, e.g. 4kg (E).
6.
Then perform the following calculations:
Measured amount of fertiliser initially loaded in hopper (A)
10kg
Deduct any remaining fertiliser (E)
4kg
Balanced used
6kg
Multiply width of spread (D)
8 metres
By the meters traveled (C)
x 200 metres
= 1,600 square metres
Divide 10,000 by the answer (1,600)
10,000 ÷ 1,600 = 6.30
Multiply the sum (6.30) by the test quantity used (B)
6kg (B) x 6.30 = 37.80kg
The figure achieved is the sowing rate per hectare at the constant speed selected for the test.
Due to the variations of seeds and fertiliser types, it is recommended the test be carried out for each
product being used.
CALIBRATION SETTINGS
Tractor P.T.O. run at 450rpm (kg/ha) Ground Speed 15kph
Setting
1
2
3
4
5
6
7
Urea
-
-
10.00
25.00
40.00
57.50
75.00
Super
-
-
11.65
26.64
46.62
68.26
84.91
DAP
-
-
17.50
32.50
52.50
72.50
95.00
Tractor P.T.O. run at 500rpm (kg/ha) Ground Speed 15kph
Setting
1
2
3
4
5
6
7
Urea
-
-
10.00
25.00
42.50
62.50
80.00
Super
-
-
11.65
29.97
49.95
69.93
93.24
DAP
-
-
12.50
27.50
50.00
77.50
95.00
Tractor P.T.O. run at 550rpm (kg/ha) Ground Speed 15kph
Setting
1
2
3
4
5
6
7
Urea
-
-
12.50
27.50
50.00
65.00
85.00
Super
-
-
14.98
33.30
56.61
81.58
96.57
DAP
-
-
12.50
30.00
52.50
72.50
100.00
Note: These calibrations are a guide only and should be checked to confirm accuracy.
