108
Volumetric metering
Go to a nozzle and collect the water for
exactly 60 seconds with the prepared
measuring cup.
Write down the amount of water applied.
Repeat the last two steps on at least 3
nozzles with different part-width sec-
tions.
Compare the amount of water applied by
the individual nozzles.
If the output quantities of the measured
nozzles are equal and the l/min value cor-
responds to the value of the nozzle table:
Calibrate the flowmeter.
If the output quantities of the measured
nozzles are the same and the l/min value
deviates from the value in the nozzle table:
Adjust spray pressure.
Example:
According to the nozzle table, at 2.5 bar
the nozzle output is 1.5 l/min.
If the measured value is only 1.2 l/min,
spray pressure is increased until the in-
tended single nozzle output of 1.5 l/min
is measured.
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