Great Plains TSF1290 Operator Manual - Manual (Page 38)

34 TSF1080, TSF1090, TSF1280 & TSF1290 Great Plains Manufacturing, Inc.
500-641M 05/10/2012
Rate Calibration
Current TSF1080, TSF1090, TSF1280 & TSF1290
sprayers include a Raven SCS 450 controller as stan-
dard equipment, and the SCS 450 system includes a
flow rate sensor in the boom plumbing. This supports
direct real-time readout of the current application rate.
For a newer sprayer, perform the rate calibration proce-
dures from the Raven SCS 450 manual.
For an older sprayer without an SCS 450, perform the fol-
lowing steps.
1. Determine the nozzle rate (gpm or liters/min) at
which your chemical should be sprayed. In determin-
ing the rate, and which spray nozzles to use with
your sprayer, you need to know:
2. Using this information, calculate the nozzle rate, per
nozzle, per a formula below:
Using 0.34 gpm and pressure 30 psi, you would
select a nozzle from your nozzle chart that comes
closest to providing the desired output.
3. Turn on your sprayer and adjust the pressure.
4. While operating the sprayer at desired pressure,
catch the discharge in the calibration container for
one minute. For U.S. customary units, divide the
number of ounces caught by 128 to determine gal-
lons per minute (GpM) per nozzle. 128 fluid ounces
equals one gallon.
Parameter Units Your value Data Source
Nozzle SpacingIn or SpacingCm inch or cm from sprayer configuration (page 17)
Target GpA or LpHa g/ac or liters/Ha From material container or supplier
Intended Mph ok Kph mph or kph From course trial above
Nominal application psi or kg/cm
2
psi or kg/cm
2 from GP slide chart
Example:
Nozzle Spacing: 20 in
Speed: 5.05 mph
Pressure: 30 psi
Nozzle Rate = 0.34 Gallons Per Minute
20 5.05 20
Ч Ч
5940
------------------------------- 0.34 =
NozzleGpM
GpA Mph
×
SpacingIn
×
5940
---------------------------------------------------------- =
NozzleLpM
LpHa Kph
×
SpacingCm
×
60000
-------------------------------------------------------------- =
Example:
Sample: 44 U.S. Fluid Ounces in 1 minute
Nozzle Rate = 0.34 Gallons Per Minute
44
128
------- 0.34 =
NozzleGpM
SampleOuncesPerMinute
128
-------------------------------------------------------------- =