SPRAYER CALIBRATION PROCEDURES

NOTE: To avoid wind drift, use lower pressure and higher spray volume.

Guidelines For Sprayer Calibration

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.

Calibrating the Sprayer

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 maintained 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.

 

10 x 66

=

660

 

or 16.5 gallons per acre

 

FLAT SPRAY NOZZLE

 

40

40

 

 

 

 

 

 

 

 

 

 

 

FOR BROADCAST SPRAYING

7.

To calculate the amount of chemical to put in the tank:

 

 

 

 

Gallons Per Acre

 

Sprayer Tank Size

 

Acres

 

 

 

 

 

Liquid

Nozzle

Based on 20" Nozzle Spacing

=

 

 

then;

Nozzle

Presure Capacity

4

5

7.5

10

 

 

 

 

 

 

 

 

 

No.

In PSI.

In GPM.

MPH

MPH

MPH

MPH

Desired GPA

 

 

covered

 

 

 

 

 

 

 

 

 

8002

20

.14

10.5

8.4

5.6

4.2

Recom. amount of chemical

 

Acres

Amt. of chemical

 

25

.16

11.8

9.4

6.3

4.7

x

 

30

.17

12.9

10.3

6.9

5.2

 

40

.20

14.8

11.8

7.9

5.9

 

 

per acre

 

 

covered =

per tankful

 

 

 

 

 

8003

20

.21

15.7

12.6

8.4

6.3

Example: If a 500 gallon tank is used and 16.5 gallons per acre are applied, one

 

25

.24

17.6

14.1

9.4

7.1

 

30

.26

19.0

15.4

10.3

7.7

tank will cover 30.3 acres. If three pounds of chemical are required per acre, then

 

40

.30

22.0

17.8

11.8

8.9

8004

20

.28

21.0

16.8

11.2

8.4

90.0 pounds of chemical are required per tankful.

 

25

.32

24.0

18.7

12.5

9.4

 

30

.35

26.0

21.0

13.7

10.3

500

 

 

 

 

 

 

 

 

 

 

 

 

40

.40

30.0

24.0

15.8

11.9

=

30.3 acres covered

 

 

 

then;

 

8005

20

.35

26.0

21.0

14.0

10.5

16.5

 

 

 

 

 

25

.40

29.0

23.0

15.7

11.7

 

 

 

 

 

 

 

 

 

 

 

 

 

30

.43

32.0

26.0

17.2

12.9

3 lbs. (gal.) x 30.3 =

90.0 lbs. (gal.) per tankful

 

40

.50

37.0

30.0

19.8

14.9

 

 

 

 

 

 

 

FLOODJET TIPS

FOR BROADCAST SPRAYING

 

 

 

 

Liquid

Capacity

 

 

Gallons Per Acre

 

Nozzle

 

Orifice

Pressure

 

In

4

 

5

6

8

10

No.

 

Dia.

In PSI.

GPM.

MPH

MPH

MPH

MPH

MPH

TKSS2

 

.046"

10

.20

7.4

 

6.0

4.9

3.7

3.0

 

 

 

 

20

.28

10.5

 

8.4

6.9

5.2

4.2

 

 

 

 

30

.35

12.9

 

10.3

8.7

6.5

5.2

 

 

 

 

40

.40

14.8

 

11.8

9.9

7.5

5.9

TKSS2.5

 

.052"

10

.25

9.3

 

7.4

6.1

4.6

3.7

 

 

 

 

20

.35

12.9

 

10.3

8.7

6.5

5.2

 

 

 

 

30

.43

15.9

 

12.8

10.6

8.0

6.4

 

 

 

 

40

.50

18.6

 

14.9

12.4

9.3

7.4

TKSS3

 

.057"

10

.30

11.1

 

8.9

7.5

5.6

4.5

 

 

 

 

20

.42

15.7

 

12.6

10.4

7.8

6.3

 

 

 

 

30

.52

19.3

 

15.4

12.8

9.7

7.7

 

 

 

 

40

.60

22.0

 

17.8

14.8

11.2

8.9

TKSS4

 

.065"

10

.40

14.9

 

11.9

9.9

7.5

5.9

 

 

 

 

20

.57

21.0

 

16.8

13.9

10.5

8.4

 

 

 

 

30

.69

26.0

 

21.0

17.1

12.8

10.3

 

 

 

 

40

.80

30.0

 

24.0

19.8

14.8

11.9

TKSS5

 

.073"

10

.50

18.6

 

14.9

12.4

9.3

7.4

 

 

 

 

20

.71

27.0

 

21.0

17.6

13.1

10.7

 

 

 

 

30

.87

33.0

 

26.0

21.7

16.1

13.1

 

 

 

 

40

1.00

38.0

 

30.0

25.2

18.6

15.1

TKSS7.5

 

.091

10

.75

28.0

 

22.0

18.7

14.0

11.1

 

 

 

 

20

1.10

39.0

 

32.0

26.4

19.8

15.8

 

 

 

 

30

1.30

49.0

 

39.0

31.9

24.1

19.3

 

 

 

 

40

1.50

56.0

 

45.0

37.4

27.5

22.0

 

 

 

 

 

 

 

40"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nozzle Spacing

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Floodjet tips are positioned as shown in the diagram by the chart below. When positioning the tip as shown in Figure A the tip can be operated closer to the ground, thereby reducing the chance of wind drift.

The chart below shows capacities in gallons per acre at various speeds and liquid pressures. Capacities are based on water at 70 degrees F. with nozzles spaced at 40 inches.

The rate chart is based on 40 inch row spacings. For other spacings of nozzles on the boom, multiply the tabulated GPA coverage by the conversion factors shown below.

 

 

Other Spacing

20

24

28

 

30

32

34

36

38

40

42

44

Conversion Factor

2

1.67

1.43

1.33

1.25

1.18

1.11

1.05

1.00

.95

.91

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure A

6" to 7"

Flat Uniform Sprayer Pattern

Page 29

Page 29
Image 29
Demco Sprayer Calibration Procedures, Flat Spray Nozzle For Broadcast Spraying, Floodjet Tips For Broadcast Spraying

Sprayer specifications

The Demco Sprayer is a leading solution for farmers looking for efficient and effective crop management. Renowned for its durability and versatile applications, the sprayer stands out with several key features and advanced technologies designed to enhance productivity.

One of the most notable characteristics of Demco Sprayer is its robust construction. Built with high-quality materials, the sprayer is engineered to withstand harsh agricultural conditions, ensuring longevity and reliability. The frame is designed to optimize weight distribution, which not only enhances stability during operation but also reduces soil compaction.

The Demco Sprayer is equipped with a state-of-the-art spray system that provides even and consistent coverage. This is vital for optimizing pesticide and fertilizer application. The sprayer features adjustable nozzles that can be tailored to specific crop requirements and environmental conditions. This adaptability reduces the risk of crop damage and ensures that chemicals are applied effectively, maximizing the yield.

Another significant advancement in Demco Sprayers is their user-friendly control system. Operators appreciate the intuitive design that simplifies adjustments to pressure and flow rates while in the field. This allows for real-time modifications that can improve efficiency and effectiveness without having to stop operations. Additionally, many models come with automatic shut-off features, helping to conserve resources and reduce waste.

The integration of modern GPS technology further elevates the performance of Demco Sprayers. This technology enables precise application by allowing farmers to map out fields and ensure that every area receives the necessary treatment. It significantly reduces overlaps and missed spots, which can lead to waste and under-application of critical nutrients.

Capacity is another hallmark of the Demco Sprayer lineup. With various tank sizes available, farmers can select the sprayer that best fits their operational needs, whether for small-scale applications or large farm acreage. Flexibility in tank sizes ensures that the sprayer can cater to different farming operations without compromising efficiency.

Finally, ease of maintenance is an essential aspect of the design. Demco Sprayers often feature accessible components that allow for quick inspections and repairs, minimizing downtime during critical farming seasons. Coupled with robust customer support and warranty options, owners can feel confident in their investment.

In summary, the Demco Sprayer combines advanced technologies, robust construction, user-friendly controls, and flexibility to provide an exceptional solution for modern agriculture. Its focus on efficiency, ease of use, and durability makes it an indispensable tool for farmers looking to enhance their productivity.