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Chapter 6
CALIBRATION
Manual Rate Control - Calibration
Spraying is a complex task, that is affected by many
variables. It is the responsibility of the operator to
be familiar with spraying variables and to understand
the spraying process prior to operation.
In general, the operator should know:
• The target application rate
• The required operating (spray) pressure
• The speed of travel
• The desired droplet size
To make the spray application as accurate as
possible, it is critical that your spray equipment is
regularly calibrated.
As the sprayer is moving, the ground speed and
flow rate must be considered to achieve the desired
application rate per area. Flow adjustments are made
via the control box in the cabin.
As the ground speed increases, the flow to the
booms required to maintain the application
volume needs to be increased. Increasing the flow
will result in the pressure (as displayed on the
gauge) increasing. Conversely, as the ground speed
decreases, the required flow to the booms, as well
as the pressure must be decreased to maintain a
constant application rate.
Refer to your nozzle charts for more specific details
on determining the variables required to meet your
desired application rate.
Prairie 1500-3000L Operator's Manual MY17-MY19 - REV 0
Chapter 6 - Calibration - 15
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