horsch Maestro 24 SW, Operating Instructions Manual

Page: 64 / 115

Nozzles
Two nozzle sizes are supplied with the machine,
sizes 39 and 51. Size 39 is mounted on the
machine.
The system pressure should be in the range of
2-4 bar (30-60 psi) to ensure uniform distribution
across all rows.
¾
Use a smaller nozzle if the system pressure
for the placed fertiliser quantity lies below
this value.
¾
Use a larger nozzle if the system pressure is
too high.
¾
Use the same nozzles for all rows.
¾
Use the following formula to determine the
fitting nozzles for the intended use and ap -
plication quantity:
¾
After determining the fitting nozzle, use the
table of nozzle discs from TeeJet to determine
the required pressure.
¾
Adjust the required pressure.
Nozzle selection
1. Formula
𝑑𝑑 ∶ = 𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷ℎ𝑓𝑓𝑓𝑓𝐷𝐷𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
𝑓𝑓 ∶ = 𝐴𝐴𝐷𝐷𝑓𝑓𝐴𝐴𝐷𝐷𝑖𝑖𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / ℎ𝑎𝑎
𝑎𝑎 ∶ = 𝑅𝑅𝑓𝑓𝑖𝑖ℎ𝑓𝑓𝑓𝑓𝑎𝑎𝐴𝐴𝑓𝑓𝑒𝑒𝑎𝑎𝑓𝑓𝑑𝑑 𝑖𝑖𝑓𝑓 𝐷𝐷𝑓𝑓
𝑣𝑣 ∶ = 𝐺𝐺𝑓𝑓𝑓𝑓𝐷𝐷ℎ𝑤𝑤𝑖𝑖𝑓𝑓𝑑𝑑𝑖𝑖𝑓𝑓𝑤𝑤𝑓𝑓𝑖𝑖𝑒𝑒 𝑖𝑖𝑓𝑓 𝑤𝑤𝑓𝑓 / ℎ
𝑑𝑑 =
𝑓𝑓 ∙ 𝑎𝑎 ∙ 𝑣𝑣
60000
𝑓𝑓 =
𝑑𝑑 ∙ 60000
𝑎𝑎 ∙ 𝑣𝑣
Beispiel:
𝑑𝑑 =
100 𝑙𝑙 / ℎ𝑎𝑎 ∙ 12 𝑘𝑘𝑘𝑘 / ℎ ∙ 70 𝑐𝑐𝑘𝑘
60000
=
84000
60000
𝑓𝑓 / min = 𝟏𝟏 , 𝟒𝟒 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
Flow rate in l/min
Placing quantity in l/ha
Row spacing in cm
Travel speed in km/h
𝑑𝑑 ∶ = 𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷ℎ𝑓𝑓𝑓𝑓𝐷𝐷𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
𝑓𝑓 ∶ = 𝐴𝐴𝐷𝐷𝑓𝑓𝐴𝐴𝐷𝐷𝑖𝑖𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / ℎ𝑎𝑎
𝑎𝑎 ∶ = 𝑅𝑅𝑓𝑓𝑖𝑖ℎ𝑓𝑓𝑓𝑓𝑎𝑎𝐴𝐴𝑓𝑓𝑒𝑒𝑎𝑎𝑓𝑓𝑑𝑑 𝑖𝑖𝑓𝑓 𝐷𝐷𝑓𝑓
𝑣𝑣 ∶ = 𝐺𝐺𝑓𝑓𝑓𝑓𝐷𝐷ℎ𝑤𝑤𝑖𝑖𝑓𝑓𝑑𝑑𝑖𝑖𝑓𝑓𝑤𝑤𝑓𝑓𝑖𝑖𝑒𝑒 𝑖𝑖𝑓𝑓 𝑤𝑤𝑓𝑓 / ℎ
𝑑𝑑 =
𝑓𝑓 ∙ 𝑎𝑎 ∙ 𝑣𝑣
60000
𝑓𝑓 =
𝑑𝑑 ∙ 60000
𝑎𝑎 ∙ 𝑣𝑣
Beispiel:
𝑑𝑑 =
100 𝑙𝑙 / ℎ𝑎𝑎 ∙ 12 𝑘𝑘𝑘𝑘 / ℎ ∙ 70 𝑐𝑐𝑘𝑘
60000
=
84000
60000
𝑓𝑓 / min = 𝟏𝟏 , 𝟒𝟒 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
𝑑𝑑 ∶ = 𝐷𝐷𝐷𝐷𝐷𝐷𝐷𝐷ℎ𝑓𝑓𝑓𝑓𝐷𝐷𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
𝑓𝑓 ∶ = 𝐴𝐴𝐷𝐷𝑓𝑓𝐴𝐴𝐷𝐷𝑖𝑖𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓𝑓 𝑖𝑖𝑓𝑓 𝑓𝑓 / ℎ𝑎𝑎
𝑎𝑎 ∶ = 𝑅𝑅𝑓𝑓𝑖𝑖ℎ𝑓𝑓𝑓𝑓𝑎𝑎𝐴𝐴𝑓𝑓𝑒𝑒𝑎𝑎𝑓𝑓𝑑𝑑 𝑖𝑖𝑓𝑓 𝐷𝐷𝑓𝑓
𝑣𝑣 ∶ = 𝐺𝐺𝑓𝑓𝑓𝑓𝐷𝐷ℎ𝑤𝑤𝑖𝑖𝑓𝑓𝑑𝑑𝑖𝑖𝑓𝑓𝑤𝑤𝑓𝑓𝑖𝑖𝑒𝑒 𝑖𝑖𝑓𝑓 𝑤𝑤𝑓𝑓 / ℎ
𝑑𝑑 =
𝑓𝑓 ∙ 𝑎𝑎 ∙ 𝑣𝑣
60000
𝑓𝑓 =
𝑑𝑑 ∙ 60000
𝑎𝑎 ∙ 𝑣𝑣
Beispiel:
𝑑𝑑 =
100 𝑙𝑙 / ℎ𝑎𝑎 ∙ 12 𝑘𝑘𝑘𝑘 / ℎ ∙ 70 𝑐𝑐𝑘𝑘
60000
=
84000
60000
𝑓𝑓 / min = 𝟏𝟏 , 𝟒𝟒 𝑓𝑓 / 𝑓𝑓𝑖𝑖𝑓𝑓
60 61