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5 - Operation
• Nozzle Choice
• Nozzle Wear
• Spray Distribution
• Spray Pressure
• Water Volume Rates
• Weather Influence on Spraying
• Useful Formulae
For optional equipment - see other books delivered or contact HARDI.
Operating Limits
The following things are important when considering the performance of the sprayer.
• Maximum driving speed
• Pressure setting
• Minimum / maximum flow rate
The operating limits for your sprayer are closely related to:
1. Pump size
2. Boom width
3. Nozzle size
In the table below, the operating limits for volume rate are calculated, when driving at different speeds.
Nozzle size,
Min. volume
type HARDI ISO
rate (l/ha) at 4
F-110
km/h
02 (yellow)
171
025 (purple)
213
03 (blue)
255
04 (red)
339
05 (brown)
423
06 (grey)
510
08 (white)
678
10 (light blue)
849
÷
NOTE! The specified nozzle type is a standard flat fan nozzle. Other special nozzle types will show different results. Ask
your HARDI dealer if in doubt.
μ
ATTENTION! It is recommended not to drive faster than 16 km/h when spraying.
μ
ATTENTION! The pressure range for the nozzles are 1.5 - 5 bar (except for HARDI INJET nozzles, which are ranging from
3-8 bar). The spraying pressure should be within these limits.
128
Max. volume
Min. volume
Max. volume
rate (l/ha) at 4
rate (l/ha) at 8
rate (l/ha) at 8
km/h
km/h
km/h
309
86
387
107
465
128
621
170
774
212
930
255
1239
339
1548
425
Min. volume
Max. volume
rate (l/ha) at 12
rate (l/ha) at 12
km/h
km/h
155
57
194
71
233
85
311
113
387
141
465
170
620
226
774
283
Min. volume
Max. volume
rate (l/ha) at 16
rate (l/ha) at 16
km/h
km/h
103
43
129
53
155
64
207
85
258
106
310
128
413
170
516
212
77
97
116
155
194
233
310
387
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