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XR8001VS X 20 .07 5.3 4.3 2.8 2.2
25 .08 5.9 4.7 3.1 2.4
30 .09 6.4 5.1 3.4 2.6
40 .10 7.4 6.0 4.0 3.0
XR80015VS X 20 .11 7.8 6.3 4.3 3.2
25 .12 8.8 7.1 4.7 3.6
30 .13 9.7 7.7 5.2 3.9
40 .15 11.1 8.9 6.0 4.5
XR8002VS X 20 .14 10.5 8.4 5.6 4.2
25 .16 11.8 9.4 6.3 4.7
30 .17 12.9 10.3 6.9 5.2
40 .20 14.8 11.8 7.9 5.9
XR8003VS X 20 .21 15.7 12.6 8.4 6.3
25 .24 17.6 14.1 9.4 7.1
30 .26 19.0 15.4 10.3 7.7
40 .30 22.0 17.8 11.8 8.9
XR8004VS X 20 .28 21.0 16.8 11.2 8.4
25 .32 24.0 18.7 12.5 9.4
30 .35 26.0 21.0 13.7 10.3
40 .40 30.0 24.0 15.8 11.9
XR8005VS X 20 .35 26.0 21.0 14.0 10.5
25 .40 29.0 23.0 15.7 11.7
30 .43 32.0 26.0 17.2 12.9
40 .50 37.0 30.0 19.8 14.9
XR8006VS X 20 .42 31.0 25.0 16.9 12.6
25 .47 35.0 28.0 18.7 14.1
30 .52 39.0 31.0 21.0 15.5
40 .60 45.0 36.0 24.0 17.8
XR8008VS X 20 .56 42.0 34.0 22.0 17.0
25 .63 47.0 37.0 25.0 19.0
30 .69 52.0 41.0 27.0 21.0
40 .80 59.0 48.0 32.0 24.0
8010SS X 20 .70 53.0 42.0 28.0 21.0
25 .78 59.0 47.0 31.0 24.0
30 .86 64.0 51.0 34.0 26.0
40 1.00 74.0 59.0 40.0 30.0
Gallons Per Acre
Based on 20" Nozzle Spacing
4 5 7.5 10
MPH MPH MPH MPH
SPRAYER CALIBRATION PROCEDURES
Before calibrating your sprayer, first determine whether each nozzle is delivering at a uniform rate. Place
quart jars under all nozzles and watch as they fill up. The level should rise uniformly and take the same
time (within 10%) for all nozzles to fill the jars. Replace any nozzle showing a discharge rate different from
the others.
Guidelines For Sprayer Calibration
NOTE: To avoid wind drift, use lower pressure and higher spray volume.
1. Mark off 660 feet (1/8 mile).
2. Fill the tank with water.
3. Set the sprayer to your desired operating pressure.
4. Turn the sprayer on and drive at the constant speed you
will be spraying. Calibration on a road or unplowed field
will give different results than on soft cultivated ground.
Note tachometer reading so same speed can be main-
tained later.
5. Measure the amount of water it takes to refill the tank
completely.
6. Calculate the amount applied:
Number of gallons used x 66 (factor) Gallons applied
Spray Swath in Feet per acre
Example: If 10 gallons are used in 660 feet and the spray
swath is 40 feet, spraying rate is 16.5 gallons per acre.
7. To calculate the amount of chemical to put in the tank:
Example: If a 500 gallon tank is used and 16.5 gallons per
acre are applied, one tank will cover 30.3 acres. If three
pounds of chemical are required per acre, then 90 pounds
of chemical is required per tankful.
3 lbs. (gal.) x 30.3 = 90 lbs. (gal.) per tankful
To determine GPA at other nominal speed.
Tractor Multiply by
Speed Speed Factor
4 mph 1.25
5 mph 1.00
6 mph .83
7.5 mph .67
10 mph .50
=
10 x 66 660
40 40
=
or 16.5 gallons per acre
Sprayer Tank Size Acres
Desired GPA Covered
=
then;
Recommended amount
of chemical per acre
Acres
Covered
=
Amount of
chemical per
tankful
500
16.5
=
30.3 acres covered then;
Calibrating the Sprayer
Nozzle
No.
Nozzle
Capacity
in GPM
Liquid
Pressure
in PSI
To determine GPA for solutions other than water, deter-
mine the weight per gallon or specific gravity and use the
following conversion table.
Specific
Gravity
Multiply
By
Weight per
Gallon
7.0 lbs. .84 1.09
8.0 lbs. .96 1.02
8.34 lbs. (water) 1.00 1.00
9.0 lbs. 1.08 .96
10.0 lbs. 1.20 .91
11.0 lbs. 1.32 .87
12.0 lbs. 1.44 .83
FLAT SPRAY NOZZLE for Broadcast Spraying
Sprayer Tips
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