Product Manual

Appendix A –Boom Spray Calibration Tables
43
Below are some guidelines to help you calibrate your tow behind broadcast sprayer. This is a very
important step in operating the tow behind broadcast sprayer such that too much or too little chemical
may be applied.
1. Using Table 1, find a table that corresponds with the chemical manufacturer's suggested application
rate (gallons per acre, gallons per 1000 sq. ft., or gallons per 100 sq. ft.).
2. Find the application rate that is closest to the chemical manufacturer's recommendations.
3. The speed to drive your ATV is listed below the application rates.
TABLE 1
Spray
Pressure
Flow
GALLONS PER ACRE - based on 40 foot spray pattern
Height
(PSI)
(GPM)
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
6 MPH
7 MPH
36"
20
1.7*
50
25
17
12
10
8
7
36"
30
2.0*
58
30
19
15
12
10
8
36"
40
2.5*
73
36
24
18
15
12
10
Spray
Pressure
Flow
GALLONS PER 1000 SQUARE FEET – based on 40 foot spray pattern
Height
(PSI)
(GPM)
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
6 MPH
7 MPH
36"
20
1.7*
1.15
.53
.38
.29
.23
.18
.16
36"
30
2.0*
1.33
.67
.44
.33
.28
.22
.18
36"
40
2.5*
1.68
.83
.55
.41
.35
.28
.24
Spray
Pressure
Flow
GALLONS PER 100 SQUARE FEET – based on 40 foot spray pattern
Height
(PSI)
(GPM)
1 MPH
2 MPH
3 MPH
4 MPH
5 MPH
6 MPH
7 MPH
36"
20
1.7*
.115
.053
.038
.029
.023
.018
.016
36"
30
2.0*
.133
.067
.044
.033
.028
.022
.018
36"
40
2.5*
.168
.083
.055
.041
.035
.028
.024
*Approximate flow from one nozzle
4. Use Table 2 to choose the throttle setting on your ATV.
TABLE 2
5. The coverage area can be found by dividing tank size by the application rate.
Example: 31 gallons divided by 12 gallons/acre = 2.58 acre of coverage per tank
Speed
(MPH)
Time required in seconds to travel a distance of:
100 ft.
200 ft.
300 ft.
1
68
136
205
2
34
68
102
3
23
45
68
4
17
34
51
5
14
28
41
6
11
23
34
7
9.5
19
29