
52
Calibrating The Sprayer
Your sprayer will be equipped with one of two different control systems:
•
TeeJet Electric Control System (standard)
•
Raven Rate Control System (optional)
The two systems need to be calibrated in different ways.
TeeJet Electric Control System (standard)
1.
Make sure sprayer is clean.
2.
Select nozzle and pressure.
3.
Fill sprayer half full with water.
DO NOT
add chemical.
4.
Set up two stakes at the following measurements, depending on nozzle spacing:
•
272 feet apart for 15" nozzle spacing
•
204 feet apart for 20" nozzle spacing
•
136 feet apart for 30" nozzle spacing
•
102 feet apart for 40" nozzle spacing
5.
Under field conditions and at spraying speed, drive the distance and note both engine RPMs
and the time. Do this at least twice to get the average time.
6.
Stop the tractor. Put the tractor in park.
7.
Unfold the sprayer booms. (Refer to the “Hydraulic Booms” section of this manual for instruc-
tions).
8.
Start the sprayer and run at desired RPMs and pressure.
9.
While parked, collect the liquid from the nozzle. Hold a container (Miller Calibration Jar Part
No. 07.11360) graduated in ounces below a nozzle. Record the output for the same time
period as the average driving time determined in step 5. The average output in ounces is
equivalent to the application rate in gallons per acre (GPA).
NOTE:
Measuring the output from each tip helps assure balanced spraying from the tips. It will also
help you identify worn tips which may need replacement.
10.
Repeat the procedures for the remaining nozzles.
11.
Compare the actual application rate with the intended rate. If the actual rate varies from the
desired rate, you must adjust the pressure or speed or change tip size to compensate.
Raven Rate Control System (optional)
The rate controller is normally pre programmed from Miller for your sprayer. You should verify that
the programming matches your sprayer specifications. It is very important that the radar gun cali-
bration number is correct. Refer to the Raven owner’s manual.
Summary of Contents for 500 BW
Page 6: ......
Page 31: ...27 Spray Tip Wear...
Page 38: ...34 TeeJet Air Induction Spray Tips At Various Speeds And Pressures 20 Inch Tip Spacing...
Page 94: ......
Page 96: ...2007 by Miller St Nazianz Inc...