Demco 1250 - Fertilizer Applicator Calibration Procedures; Calibrating the Fertilizer Applicator

Page 34
FERTILIZER APPLICATOR CALIBRATION PROCEDURES
Guidelines For Fertilizer Applicator Calibration
1. Mark off 660 feet (1/8 mile).
2. Fill the tank with water.
3. Set the applicator to your desired operating pressure.
4. Turn the applicator 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
Swath in Feet per acre
Example: If 10 gallons are used in 660 feet and the 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 are required per tankful.
3 lbs. (gal.) x 30.3 = 90 lbs. (gal.) per tankful
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 Fertilizer Applicator
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
Stream Jet NOZZLE for Injection
Fertilizer Applicator Tips
x
To determine GPA for solutions other than water, determine
the weight per gallon or specific gravity and use the follow-
ing conversion table.
51
H1/4U-SS0004
TP0004-SS
H1/4U-SS0006
TP0006-SS
H1/4U-SS0008
TP0008-SS
H1/4U-SS0010
TP0010-SS
H1/4U-SS0015
TP0015-SS
H1/4U-SS0020
TP0020-SS
H1/4U-SS0030
TP0030-SS
H1/4U-SS0040
TP0040-SS
H1/4U-SS0050
H1/4U-SS0060
30
Spacing
PSI
CAPACITY
ONE
NOZZLE
IN GPM
GPA 30
4
MPH
6
MPH
8
MPH
10
MPH
12
MPH
14
MPH
16
MPH
18
MPH
20
MPH
10 0.20 9.9 6.6 5.0 4.0 3.3 2.8 2.5 2.2 2.0
20 0.28 13.9 9.2 6.9 5.5 4.6 4.0 3.5 3.1 2.8
30 0.35 17.3 11.6 8.7 6.9 5.8 5.0 4.3 3.9 3.5
40 0.40 19.8 13.2 9.9 7.9 6.6 5.7 5.0 4.4 4.0
10 0.30 14.9 9.9 7.4 5.9 5.0 4.2 3.7 3.3 3.0
20 0.42 21 13.9 10.4 8.3 6.9 5.9 5.2 4.6 4.2
30 0.52 26 17.2 12.9 10.3 8.6 7.4 6.4 5.7 5.1
40 0.60 30 19.8 14.9 11.9 9.9 8.5 7.4 6.6 5.9
10 0.40 19.8 13.2 9.9 7.9 6.6 5.7 5.0 4.4 4.0
20 0.57 28 18.8 14.1 11.3 9.4 8.1 7.1 6.3 5.6
30 0.69 34 23 17.1 13.7 11.4 9.8 8.5 7.6 6.8
40 0.80 40 26 19.8 15.8 13.2 11.3 9.9 8.8 7.9
10 0.50 25 16.5 12.4 9.9 8.3 7.1 6.2 5.5 5.0
20 0.71 35 23 17.6 14.1 11.7 10.0 8.8 7.8 7.0
30 0.87 43 29 22 17.2 14.4 12.3 10.8 9.6 8.6
40 1.00 50 33 25 19.8 16.5 14.1 12.4 11.0 9.9
10 0.75 37 25 19 14.9 12.4 10.6 9.3 8.3 7.4
20 1.06 52 35 26 21 17.5 15.0 13.1 11.7 10.5
30 1.30 64 43 32 26 21 18.4 16.1 14.3 12.9
40 1.50 74 50 37 30 25 21 18.6 16.5 14.9
10 1.00 50 33 25 19.8 16.5 14.1 12.4 11.0 9.9
20 1.41 70 47 35 28 23 19.9 17.4 15.5 14.0
30 1.73 86 57 43 34 29 24 21 19.0 17.1
40 2.00 99 66 50 40 33 28 25 22 19.8
10 1.50 74 50 37 30 25 21 18.6 16.5 14.9
20 2.12 105 70 52 42 35 30 26 23 21
30 2.60 129 86 64 51 43 37 32 29 26
40 3.00 149 99 74 59 50 42 37 33 30
10 2.00 99 66 50 40 33 28 25 22 20
20 2.83 140 93 70 56 47 40 35 31 28
30 3.46 171
114 86 69 57 49 43 38 34
40 4.00 198 132 99 79 66 57 50 44 40
10 2.50 124 83 62 50 41 35 31 28 25
20 3.54 175 117 88 70 58 50 44 39 35
30 4.33 214 143 107 86 71 61 54 48 43
40 5.00 248 165 124 99 83 71 62 55 50
10 3.00 149 99 74 59 50 42 37 33 30
20 4.24 210 140 105 84 70 60 52 47 42
30 5.20 257 172 129 103 86 74 64 57 51
40 6.00 297 198 149 119 99 85 74 66 59
Note: Always double check your application rates. Tabulations are based on spraying water at 70°F (21°C).
See pages 173–187 for useful formulas and information.
How to order:
Specify nozzle number and material.
Example: H1/4U-SS0010 Stainless Steel
Stainless Steel for
Banding Fertilizers
N
Permits banding fluids
at high rig speeds.
N
Large orifices with no
internal obstructions permit
non-clogging suspension
applications.
N
Lower drift potential.
N
See page 174 for liquid density
conversion factors.
Solid Stream Spray Nozzles
FERTILIZER NOZZLES
ENGLISH