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4
OPERATION AND ADJUSTMENTS
ARBUS 400 Spray calibration
12. With the sprayer stopped on a lev-
eled surface, preferentially where it was
lled, complete the tank and measure the
volume used.
13. Calculate the pulverization volume in
Liter/hectares, using the formula:
Q = Vol x 43560
A
Where:
GPA = spraying volume in gallons/acre.
Vol = volume used on sprayed area (in
galons)
A= sprayed area (165 feet x determined
spray swath (s) = ft
2
)
Example:
Vol = 5 gallons
A = 165 x 20 ft (s) = 3300 ft
2
Q = 5 x 43560 Q= 66 GPA
3300
50m
swath
ATTENTION!
Should the spray volume is
not the desired one, increase
or decrease the flow, through
the regulating valve, or in-
crease or decrease the speed.
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