Read AG_400_0206_SprayTip_Catalog.qxp text version

Spray Tip Information Guide

Spray quality is the first requirement to fill. Determine what type of function is to be performed, under what conditions, and the results expected. Spray tips are, by design, multipurpose. You may find that more than one spray tip quality will meet your needs. Flow form of the spray tip varies with pressure. This requirement is very straightforward. The pressure at which you plan to use the spray tip is interrelated to all the other requirements. It takes a four-fold increase in pressure to double the flow from any set point. Spray angle is also affected by pressure. Pressure is responsible for changes in the spray angle and effective coverage. Spray tips used below the recommended pressure produce a narrow, weak pattern and coverage. If you use a pressure that exceeds the spray tip's pressure range, you run the risk of uncontrollable drift. You should always pick a spray tip that will perform at the complete range of pressure with which you will be applying your liquid.

Theoretical Coverage (inches) at Various Distance (inches) from the Spray Tip

Spray Angle

15° 25° 40° 50° 65° 80° 110° 120° 140°

8" 2.1" 3.5" 5.8" 7.5" 10.2" 13.4" 22.8" 27.4" 43.8"

10" 2.6" 4.4" 7.3" 9.3" 12.7" 16.8" 28.5" 34.6" 54.8"

12" 3.2" 5.3" 8.7" 11.2" 15.3" 20.2" 34.3" 41.6" 74.5"

15" 3.9" 6.6" 10.9" 14.0" 19.2" 25.2" 42.8" 52.0" 82.2"

18" 4.7" 8.0" 13.1" 16.8" 22.9" 30.3" 51.4" 62.4" 98.6"

20" 5.2" 8.8" 14.6" 18.6" 25.4" 33.9" 57.0" 69.2" 105.6"

30" 7.9" 13.3" 21.8" 28.0" 38.2" 50.4" 85.6" 104.0" 164.4"

40" 10.4" 17.6" 29.2" 37.2" 50.8" 67.8" 114.0" 138.4" 211.2"

48" 12.6" 21.2" 34.9" 44.8" 61.2" 80.6" 137.2" 166.4" 263.0"

Factors Affecting Spray Tip Performance Summary The information in the chart below applies to most spray applications. However, because there are so many different types and sizes of spray tips, the effects may vary in a specific application. Hypro is glad to assist you with any specific application questions. Increase In

Operating Pressure Capacity (Flow Rate) Spray Angle Droplet Size Pattern Quality Wear Impact Velocity Increases

Increases then Decreases

Specific Gravity Decreases Negligible Negligible Negligible Negligible Decreases Decreases

Viscosity · Decreases Increases Deteriorates Decreases Decreases Decreases

Fluid Temperature ·· Increases Decreases Improves Increases Increases Increases

Surface Tension No Effect Decreases Increases Negligible ­­ Negligible Negligible

Decreases Improves Increases Increases Increases

· Full Cone and hollow cone increases, flat fan spray decreases · · Depends on fluid being sprayed and spray tip used

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Spraying Solutions other than Water

When spraying liquids that have a different specific gravity than water, multiply GPA (or L/ha) by the conversion factor so that you can choose the right spray tip to use. Standard U.S. Weight of Solution per Gallon 7.0 lbs. 8.0 lbs. 8.34 lbs. water 9.0 lbs. 10.0 lbs. 10.65 lbs. (28% nitrogen) 11.0 lbs. 12.0 lbs. 14.0 lbs. 16.0 lbs. Specific Gravity 0.84 0.96 1.00 1.08 1.20 1.28 1.32 1.44 1.68 1.95 Conversion Factor 0.92 0.98 1.00 1.04 1.10 1.13 1.15 1.20 1.30 1.40

Example: Desired application rate of 28%N is 30 GPA. GPA (28%N) x Conversion Factor = GPA (water) 30 GPA (28%N) x 1.13 = 33.9 GPA (water) Choose a spray tip from a table that will supply you with 33.9 GPA at the speed and pressure you want to apply the 28% N solution.

Metric Weight of Solution per Gallon 0.85 kg/L 0.90 kg/L 1.00 kg/L (water) 1.10 kg/L 1.20 kg/L 1.28 kg/L (28% nitrogen) 1.40 kg/L 1.50 kg/L 1.75 kg/L 2.00 kg/L Specific Gravity 0.85 0.90 1.00 1.10 1.20 1.28 1.40 1.50 1.75 2.00 Conversion Factor 0.92 0.95 1.00 1.05 1.10 1.13 1.18 1.22 1.32 1.41

Example: Desired application rate of 28%N is 300 L/ha. L/ha (28%N) x Conversion Factor = L/ha (water) 300 L/ha (28%N) x 1.13 = 339 L/ha (water) Choose a spray tip from a table that will supply you with 339 L/ha at the speed and pressure you want to apply the 28%, N solution.

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Formula & Conversion Tables

Suggested Minimum Spray Heights (Flat Fan Spray Tips)

Spray Angle 80 Degree (TR) 110 Degree (TR) 120 Degree (ULD) 140 Degree (HF) Standard Metric Standard Metric Standard Metric Standard Metric

15" (40 cm) Spacing 13"-14" 33-36 cm 10"-11" 25-28 cm 8"-10" 20-25 cm 5"-7" 13-18 cm

20" (50 cm) Spacing 17"-19" 43-48 cm 15"-18" 38-46 cm 12"-15" 30-38 cm 7"-9" 18-23 cm

30" (75 cm) Spacing 26"-28" 66-71 cm 20"-22" 51-56 cm 16"-20" 41-52 cm 10"-14" 25-35 cm

40" (100 cm) Spacing** NR* NR* NR* NR* 24"-30" 61-76 cm 14"-18" 35-45 cm

* Not Recommended ** 40" tip spacing is prone to off-target trespass, under certain conditions that affect drift.

Optimum Spray Heights (Flat Fan Spray Tips)

Spray Angle 80 Degree (TR) 110 Degree (TR) 120 Degree (ULD) 140 Degree (HF) Standard Metric Standard Metric Standard Metric Standard Metric

15" (40 cm) Spacing 22" 56 cm 15" 38 cm 15" 38 cm 10" 25 cm

20" (50 cm) Spacing 30" 76 cm 20" 51 cm 20" 51 cm 12" 30 cm

30" (75 cm) Spacing 43" 109 cm 30" 76 cm 30" 76 cm 16" 40 cm

40" (100 cm) Spacing** NR* NR* NR* NR* 40" 102 cm 22" 55 cm

* Not Recommended ** 40" tip spacing is prone to off-target trespass, under certain conditions that affect drift.

20 inch Tip Spacing

30 inch Tip Spacing

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Tip Spacing To calculate a conversion factor for spacing not listed below, use the following formula: Tip Spacing in Table (inches) Your Tip Spacing (inches) Metric Conversion Factor = Tip Spacing in Table (cm) Your Tip Spacing (cm)

Standard Conversion Factor =

Standard U.S.

Your Spacing 8 in 10 in 12 in 14 in 15 in 16 in 18 in 20 in 22 in 24 in 26 in 28 in 30 in 32 in 34 in 36 in 38 in 40 in 42 in 44 in 48 in Conversion from Charts 20 in 30 in 40 in 2.50 3.75 5.00 2.00 3.00 4.00 1.67 2.50 3.33 1.43 2.14 2.86 1.33 2.00 2.67 1.25 1.88 2.50 1.11 1.67 2.22 1.00 1.50 2.00 0.91 1.36 1.82 0.83 1.25 1.67 0.77 1.15 1.54 0.71 1.07 1.43 0.67 1.00 1.33 0.63 0.94 1.25 0.59 0.88 1.18 0.56 0.83 1.11 0.53 0.79 1.05 0.50 0.75 1.00 0.48 0.71 0.95 0.45 0.68 0.91 0.42 0.63 0.83

Metric

Your Spacing 10 cm 15 cm 20 cm 25 cm 30 cm 33 cm 40 cm 45 cm 50 cm 55 cm 60 cm 65 cm 70 cm 75 cm 80 cm 85 cm 90 cm 95 cm 100 cm 110 cm 120 cm Conversion from Charts 50 cm 75 cm 100 cm 5.00 7.50 10.00 3.33 5.00 6.67 2.50 3.75 5.00 2.00 3.00 4.00 1.67 2.50 3.33 1.52 2.27 3.03 1.25 1.88 2.50 1.11 1.67 2.22 1.00 1.50 2.00 0.91 1.36 1.82 0.83 1.25 1.67 0.77 1.15 1.54 0.71 1.07 1.43 0.67 1.00 1.33 0.63 0.94 1.25 0.59 0.88 1.18 0.56 0.83 1.11 0.53 0.79 1.05 0.50 0.75 1.00 0.45 0.68 0.91 0.42 0.63 0.83

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Measuring Traveling Speed & Application Formulas

Standard U.S.

Speed (MPH) = Distance (ft) x 60 Time (Seconds) x 88 Time Required in SECONDS (min:sec) to travel a distance of:

Speed in MPH

0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10

100 feet

136 (2:16) 68 (1:18) 45 34 27 23 19 17 15 14 12 -

200 feet

273 (4:33) 136 (2:16) 91 68 55 45 39 34 30 27 25 23 21 19 18 17 16 15 12 14

300 feet

409 (6:49) 205 (3:25) 136 (2:16) 102 (1:42) 82 (1:22) 68 (1:08) 58 51 45 41 37 34 31 29 27 26 24 23 22 21

Application Formulas ­ Standard U.S.

GPM ­ Gallons per minute GPA ­ Gallons per acre GAL/1000FT 2 ­ Gallons per 1000 square feet MPH ­ Miles per hour W Tips spacing (inches) for broadcast spraying Spray width (inches) for single-tip band spraying or boomless spraying Row spacing (inches) divided by the number of tips per row for directed spraying GPM = GPA x MPH x W 5,940 GAL/1000FT2 x MPH x W 136 5,940 x GPM (per spray tip) MPH x W 136 x GPM (per spray tip) MPH x W

(per spray tip)

(per spray tip)

GPM

=

GPA

=

GAL/1000FT2 =

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Metric

Speed (kmph) = Distance (m) x 3.6 Time (Seconds)

Time Required in SECONDS (min:sec) to travel a distance of:

Speed Km/h

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

50 m

180 90 60 45 36 30 26 23 20 -

75 m

270 135 90 68 54 45 39 34 30 27 25 23 21 -

100 m

360 180 120 90 72 60 51 45 40 36 33 30 28 26 24 23 21 20 19 18

Application Formulas ­ Metric LPM ­ Litres per minute L/ha ­ Litres per hectare Kmph ­ Kilometres per hour W - Tips spacing (m) for broadcast spraying - Spray width (m) for single-tip band spraying or boomless spraying - Row spacing (m) divided by the number of tips per row for directed spraying

L/ha x Kmph x W 600 600 x LPM Kmph x W

LPM

=

L/ha

=

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Volume of Chemical Required ­ Band Spraying

Standard U.S.

Volume of Band Width (inches) Chemical Solution = [Band Width + Spacing between Bands] Required in Gallons (inches) (inches) Label Rate of Carrier (GPA) Field X Area (Acres) X

Height Requirement ­ Band Spraying Band Width 8" 10" 12" 15" 18" 20" 30" Height over Target 80° 5" 6" 7" 9" 11" 12" 18" Height over Target 110° 3" 4" 4" 5" 6" 7" 11" GPA 30-inch conversion factors 3.80 3.00 2.50 2.00 1.70 1.50 1.00

Gallons per Acre = Gallons per Acre X GPA 30-inch conversion factor In BAND

To find GPA in the band, multiply the GPA in the tables on pgs. 53-54, or use the following equations-

GPA =

5940 x GPA x N MPH x W

GPA needed per Tip: GPM = GPA x MPH x W 5940 x N

GPA = Gallons per field acre GPM = Gallons per minute MPH = Speed in miles per hour W = Band width in inches N = Number of tips to create band width

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Metric

Volume of Band Width (m) Chemical Solution = [Band Width + Spacing between Bands] Required in Litres (m) (m) Label Rate of Carrier (L/ha) Field X Area (ha)

X

Height Requirement ­ Band Spraying Band Width 20 cm 25 cm 30 cm 40 cm 45 cm 50 cm 75 cm Height over Target 80° 12 cm 15 cm 18 cm 24 cm 27 cm 30 cm 45 cm Height over Target 110° 7 cm 9 cm 11 cm 14 cm 16 cm 18 cm 26 cm L/ha 75-cm conversion factors 3.75 3.00 2.50 1.88 1.67 1.50 1.00

Litres per hectare = Litres per hectare X L/ha 75 cm conversion factor In BAND

To find the GPA in the band, use the following equations

L/ha =

600 x LPM x N Kmph x W

LPM needed per Tip: LPM = L/ha x Kmph x W 600 x N

L/ha = Litres per field hectare LPM = Litres per minute Kmph = Speed in kilometres per hour W = Band width in metres N = Number of tips to create band width

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Conversion Factors (US Standard and Metric)

Area Multiply Known Acres Acres Acres Hectares Inches Inches Inches Feet Miles Gallons Gallons Gallons Liters Gallons Imperial Gallons Gallons/hour (GPH) Gallons/minute (GPM) Gallons Per Acre (GPA) Liter Per Hectare (L/ha) Pounds/In2 (PSI) Bar Pounds/In2 (PSI) Kilopascals (kPA) Miles Per Hour (MPH) Kilometres/Hour (km/h) By 43,560 43.56 0.4047 2.471 25.4 2.54 0.0254 0.3048 1.609 128 8 3.785 0.2641 0.833 1.201 3.785 3.785 9.353 0.1069 0.06895 14.5 6.895 0.145 1.609 0.62137 To Obtain square feet 1000FT2 blocks Hectares Acres Millimeters (mm) Centimeters (cm) Meters (m) Meters (m) Kilometres (km) Ounces Pints Liters Gallons Imperial Gallons Gallons Liters/hour (L/h) Liters/minute (L/min) Liters/Hector (L/ha) Gallons Per Acre (GPA) Bar Pounds/In2 (PSI) Kilopascals (kPA) Pounds/In2 (PSI) Kilometres/Hour (km/h) Miles Per Hour (MPH)

Length

Volume

Flow Rate Application Rate Pressure

Speed

Treated Area Per Field For Banding Applications

Band Width Row Spacing 7 in 8 in 10 in 12 in 15 in in inches 18 cm 20 cm 25 cm 30 cm 38 cm and cm 20" 0.350 0.400 0.500 0.600 0.750 50 cm 0.360 0.400 0.500 0.600 0.760 22" 0.318 0.363 0.454 0.545 0.681 60 cm 0.300 0.333 0.417 0.500 0.633 30" 0.233 0.266 0.333 0.400 0.500 75 cm 0.240 0.267 0.333 0.400 0.507 36" 0.194 0.222 0.278 0.333 0.416 90 cm 0.200 0.222 0.278 0.333 0.422 40" 0 .175 0.200 0.250 0.300 0.375 100 cm 0.180 0.200 0.250 0.300 0.380 48" 0 . 45 0.166 0.208 0.250 0.321 1 120 cm 0.150 0.167 0.208 0.250 0.317

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20 in 50 cm 1.000 1.000 0.909 0.833 0.666 0.667 0.555 0.556 0.500 0.500 0.417 0.417

24 in 60 cm 1.200 1.200 1.090 1.000 0.800 0.800 0.666 0.667 0.600 0.600 0.500 0.500

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