Micron Technology Turbofan User Manual
Page 22
DRAFT
21
SPEED
km/hr
4
6
8
10
15
20
25
30
4
0.03
0.04
0.05
0.07
0.10
0.13
0.17
0.20
6
0.04
0.06
0.08
0.10
0.15
0.20
0.25
0.30
8
0.05
0.08
0.11
0.13
0.20
0.27
0.33
0.40
10
0.07
0.10
0.13
0.17
0.25
0.33
0.42
0.50
12
0.08
0.12
0.16
0.20
0.30
0.40
0.50
0.60
14
0.09
0.14
0.19
0.23
0.35
0.47
0.58
0.70
SWATH WIDTH (metres)
This is converted to hectares by dividing by 10,000:
Area treated
=
1000 x S x W =
S x W ha/minute
60 x 10,000
600
This gives the standard formula for calculating the coverage of a sprayer:
Area/min =
swath width (m) x speed (km/hr)
ha/min
600
Example:
Speed
: 8km/hour
Swath
width:
12
m
Therefore:
Area treated
=
S x W
=
8 x 12
=
0.16 ha/min
600 600
Table 2 shows the coverage of the sprayer for various swath widths and spraying
speeds.
4. Calculate the required output from the sprayer in litres/minute to give the correct
application rate for the chemical being used.
The output rate of chemical is given by the area sprayed (in hectares) per minute
multiplied by the required application rate in litres per hectare.
Example:
Coverage:
0.16
ha/min
Application rate:
100 l/ha
Output =
0.16 x 100
=
16 l/min
Table 2 – Coverage of sprayer in ha/min