ANDREOLI
ENGINEERING
Operator’s Manual
Self-propelled sprayer ATOM
91/166
5.2
SPRAY RATES PARAMETERS SELECTION CRITERIA
The spray rate selection is based on formulas explained in the following tables.
To select the correct parameters it is necessary to know the following data:
1)
quantity of mixture (chemicals) per surface unit: [liters/hectare] or [gallons/acre];
2)
quantity of mixture sprayed by each nozzle per minute [liters/min] or [gallons/min];
3)
row spacing distance [m] or [feet];
4)
working speed [km/h] or [miles/h].
Example of calculation
Spray rate required = 600 litres/hectare
Working speed = 100 m/minute
Row spacing = 4 m
1 hectare = 10000 m²
10000 / row spacing = 2500 linear m
2500 / working speed = 25 minutes of spray
Spray rate required / 25 = 24 litres/minute = total nozzle emission flow
Number of active nozzles = 14
Total nozzle emission flow / 14 = 1,71 litres/minute per each nozzle
CHECK THE NOZZLE CORES TABLES
Nozzle to be used = red
Working pressure = 8 bar
5.2.1
Spray rates table for Albuz pink ceramic discs cores
Pressure [bar]
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
P.0,8 C.c.
1.01
1.04
1.07
1.10
1.13
1.15
1.18
1.21
1.23
1.26
1.28
1.31
1.33
1.35
1.38
1.39
P.1,0 C.c.
1.41
1.44
1.48
1.52
1.55
1.60
1.62
1.66
1.69
1.72
1.76
1.79
1.82
1.85
1.88
1.93
P.1,2 C.c.
1.87
1.93
1.98
2.04
2.09
2.14
2.19
2.24
2.28
2.33
2.37
2.42
2.46
2.50
2.54
2.57
P.1,5 C.c.
2.49
2.56
2.63
2.70
2.77
2.84
2.90
2.96
3.01
3.07
3.12
3.18
3.23
3.28
3.33
3.41
P.1,8 C.c.
3.11
3.19
3.27
3.36
3.44
3.54
3.59
3.66
3.73
3.80
3.86
3.93
3.99
4.05
4.11
4.26
P.2,0 C.c.
3.64
3.75
3.86
3.96
4.07
4.17
4.27
4.36
4.46
4.55
4.64
4.72
4.81
4.89
4.97
5.06
P.2,2 C.c.
3.87
3.99
4.11
4.23
4.35
4.46
4.58
4.69
4.80
4.90
5.01
5.11
5.21
5.31
5.41
5.49
P.2,5 C.c.
4.38
4.52
4.66
4.79
4.92
5.04
5.17
5.29
5.41
5.53
5.64
5.75
5.86
5.96
6.07
6.15
P.1,0 C.1,0
1.82
1.86
1.92
1.97
2.02
2.09
2.11
2.15
2.20
2.24
2.27
2.31
2.35
2.38
2.42
2.53
P.1,2 C.1,0
2.75
2.82
2.90
2.97
3.05
3.14
3.19
3.25
3.32
3.38
3.44
3.50
3.56
3.61
3.67
3.78
P.1,5 C.1,2
4.27
4.37
4.47
4.57
4.67
4.79
4.86
4.95
5.04
5.13
5.22
5.30
5.39
5.47
5.55
5.66
P.1,8 C.1,5
5.77
5.95
6.11
6.27
6.43
6.57
6.73
6.88
7.02
7.15
7.29
7.42
7.54
7.66
7.78
7.86
P.2,0 C.1,8
6.95
7.13
7.30
7.47
7.64
7.77
7.96
8.12
8.28
8.43
8.59
8.74
8.89
9.05
9.20
9.24
P.2,2 C.2,0
8.34
8.51
8.72
8.94
9.15
9.26
9.56
9.76
9.96 10.16 10.35 10.54 10.73 10.91 11.09
11.34
P.2,5 C.2,2
9.26
9.34
9.47
9.66
9.88
10.15
10.46 10.79 11.15 11.53 11.92 12.33 12.75 13.16 13.57
13.96
P
= ceramic disc nozzle
C
= Swirl plate with central hole
C.c.
= Swirl plate without central hole
