Toro 41440, Operator Instructions Manual

Page: 6 / 32

6
NOZZLE SELECTION:
See the nozzle charts on page 7 or 8 to be sure
that your spray nozzles have the capacity
necessary to achieve the application rate selected.
To select the proper nozzle, you need to know:
1. Recommended chemical application rate in
gallons per acre, gallons per 1000 sq. ft. or liters
per hectare.
2. Average Vehicle speed in Miles per hour or
kilometers per hour.
3. Nozzle spacing (20 inches or 50 centimeters.)
With this information you can calculate the volume
per minute per nozzle, using the formulas below.
US FORMULA:
G.P.M. = G.P.A. x M.P.H. X 20 ins.
(Per Nozzle) 5940
TU (Turf) FORMULA:
G.P.M. = G.P.K. x M.P.H. x 20 ins.
(Per Nozzle) 137
SI (METRIC) FORMULA:
lit/min = lit/ha x km/h x 50 cm
(Per Nozzle) 60,000
Use G.P.M. (lit/min) and Pressure to select
appropriate nozzle from chart on page 7 or 8.
EXAMPLE (US FORMULA):
Application Rate = 75 Gallons/Acre
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
75 G.P.A. x 4 M.P.H. x 20 = 1.00 G.P.M.
5940 (per nozzle)
With 1.00 G.P.M. and a pressure of 40 P.S.I. you
would select Nozzle No. 95-9188.
EXAMPLE (TU FORMULA):
Application Rate = 1.70 Gal./1000 sq. ft.
Vehicle Speed = 4 M.P.H.
Nozzle Spacing = 20 inches
1.70 G.P.K. x 4 M.P.H. x 20 = 1.00 G.P.M.
137 (per nozzle)
EXAMPLE (SI FORMULA):
Application Rate = 907 lit/hectare
Vehicle Speed = 5 km/h
Nozzle Spacing = 50 cm
907 lit/ha x 5 km/h x 50 = 3.78 lit/min.
60,000 (per nozzle)
With 3.78 lit/min and a pressure at 275 kPa you
would select nozzle No. 95-9188
SYMBOL DEFINITIONS:
GPM - Gallons per minute
lit/min - Liters per minute
dl/min - Deciliter per minute
PSI - Pounds per square inch
kPa - Kilopascal
GPA - Gallons per acre
lit/ha - Liter per hectare
ml/ha - Milliliter per hectare
GPK - Gallons per 1,000 sq. ft.
mm - Millimeters
cm - Centimeters
dm - Decimeters
m - Meter
MPH - Miles per hour
km - Kilometers
km/h - Kilometers per hour
US - Volume per ACRE
SI - Volume per HECTARE
TU - Volume per 1,000 sq. ft.
LIQUID CONVERSIONS
U.S. Gallons x 128 = Fluid Ounces
U.S. Gallons x 3.785 = Liters
U.S. Gallons x 0.83267 = Imperial Gallons
U.S. Gallons x 8.34 = Pounds (Water)
LENGTH
1 millimeter (mm) = 0.039 inch
1 centimeter (cm) = 0.393 inch
1 meter (m) = 3.281 feet
1 kilometer (km) = 0.621 mile
1 inch = 25.4 millimeters; 2.54 centimeters
1 mile = 1.609 kilometers
PRESSURE
1 psi = 6.89 kPa
AREA
1 square meter = 10.764 sq. feet
1 hectare (ha) = 2.471 acres; 10,000 sq.meters
1 acre = 0.405 hectare; 43,560 sq. ft.
1 sq. mile = 640 acres; 258.9 hectares
BEFORE SPRAYING