Design and function
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6.16 Flow meter
The flow meter (1) records the amount of
spraying liquid which flows to the nozzles.
The control terminal displays the litres per
minute (l/min) which are sprayed.
6.17 Pressure measuring device
The pressure measuring device is provided
for monitoring the spray pressure (Auto-
matic mode) and for the indirect indication
of filter contamination.
The pressure measuring device (1) meas-
ures the spray pressure and displays this
on the control terminal.
6.18 Feeding
On the basis of the speed pulses which are detected by the wheel, the control
terminal calculates a programmed target value (l/ha) for the total output (l/min).
This is measured by the flow meter. In Automatic mode, the electric control valve
is actuated while driving until the calculated target value corresponds to the actual
value in l/min which is measured by the flow meter.
An alarm signal is triggered if the control terminal cannot achieve correspondence.
The switch-off of segments is also detected by the control terminal and the quan-
tity is re-adjusted according to the programmed target value (l/ha).
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