SEUP 3ED CH09 CALIBRATING

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Tools required for calibration:

a. droplet size chart
b. stopwatch
c. measuring tape
d. wooden toothpick
e. calibrated container
f. magnifying glass
g. flowmeter
h. flagging tape

For sprayer calibration,
which four factors?

swath width,
size of treatment area,
travel speed,
sprayer pressure

nozzle height,
size of treatment area,
travel speed,
swath width

tank capacity,
travel speed,
swath width,
flow rate

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Which will help you
when determining
the amount of
pesticide needed for
a given application?

calculate nozzle output

measure the area being treated

ensure tank holds correct amount

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Increasing travel speed =

breaks spray up
into finer droplets

alters the pressure
of the system

reduces application rate

Changing nozzle size =

breaks spray up
into finer droplets

alters the pressure
of the system

reduces application rate

Increasing output pressure =

breaks spray up
into finer droplets

alters the pressure
of the system

reduces application rate

Three variables to
properly calibrate
dry application?

output rate, hopper size,
formulation type

swath width, output rate,
travel speed

formulation type,
travel speed
output rate

Rate controllers help
increase the accuracy
of applications only if
nozzles can _

handle a sufficient
range of pressures

preserve droplet size
if pressure changes

prevent leaks when
pressure rises

Where do rate
controllers get the
data they need to
adjust spray volume
accurately?

GPS units
nozzles
sensors