Great Plains TSF1290 Operator Manual - Manual (Page 39)

Great Plains Manufacturing, Inc. Preparation and Setup 35
05/10/2012 500-641M
5. Check the area rate. You need:
the nozzle spacing (inches or cm) from the sprayer,
the intended field speed from step 4, and
the nozzle GpM or LpM from step 4.
The above procedure assures you of accurate applica-
tion in the event there is an error in the gauge, nozzle
spacing, nozzle height, tractor speed or nozzle wear.
Since all tabulations are based on spraying clean water,
conversion factors must be used when spraying solutions
which are heavier or lighter than water, or which signifi-
cantly change the viscosity of water. Consult material
supplier documents for assistance.
Do not calibrate with actual agricultural chemicals. There is
extreme hazard in sample collection, and excess material
would be applied where the sprayer is parked. Instead, rely on
the Rate Controller monitoring, and observed tank consump-
tion rate over the acres/hectares applied.
If sprayer is equipped with a Raven SCS 450 Automatic
Rate Controller, this simple calibration procedure will
also work for verifying speed and proper nozzle output.
All Raven SCS 450 Control Systems require either wheel
drive speed sensor magnets or a radar speed sensor.
Calibration procedures for the speed sensor magnets
can be found in the Raven SCS 450 manual. Calculation
procedures for radar speed sensors are included with
each radar unit dependent on make and model. Make
sure to follow initial programming instructions (Step 3) of
the Raven manual to select either
SP1-(wheel drive sensor), or
SP2-(radar sensor).
Example:
Nozzle rate: 0.34 GpM
Speed 5.05 Mph
Spacing: 20ini
Area Rate = 20 Gallons Per Acre
0.34 5940
Ч
5.05 20
Ч
-------------------------- 20 =
GpA
NozzleGpM 5940
×
Mph SpacingIn
×
--------------------------------------------- =
LpHa
NozzleLpM 60000
×
Kph SpacingCm
Ч
----------------------------------------------- =