Kverneland Electrical Control EC, Operation Manual

Page: 45 / 69

Control box
Flowmate Control FMC
45
§5.17 A
NTICIPATION REGULATION
The anticipation regulation is only necessary if the spraying system is not equipped with a pressure
equalising system.
The anticipation regulation corrects the pressure regulator for example if the main valve is still
closed and sections are switched on or off while turning at the end of the field. This has the benefit
that the regulator is practically in the correct position when the main valve is opened and does not
need to regulate for some time before the required application rate is reached again.
The running time of the regulator in anticipation regulation depends, amongst other things, on the
regulator (regulation characteristics) and the nozzle size. Depending on the regulator type and the
nozzle size, there are experimentally determined values. In
Screen 21 the 4 values (Q/s) for the 4
nozzles pre-selected in Screen 21 can be input (basic setting = 10 Q/s).
§5.18 A
N UNKNOWN NOZZLE
When a nozzle type is used that is not in the large nozzle list of the Flowmate Control ("unknown"),
this nozzle can be characterised in
Screen 22.
It is necessary to insert two values: one value of pressure and another value for the corresponding
nozzle output. The pressure has to be in the pressure range of the nozzle. While measuring the
through flow, the computer can calculate the corresponding pressure. The user chose between
pressure and flow on the display in
Main Screen 2 .
When the minimum and maximum value for pressure (P-min and P-max) are inserted, the
computer can give a warning signal when the minimum or maximum value is exceeded
To activate the defined "unknown nozzle" on Main Screen 2 , it must be pre-selected in Screen 20
like other nozzle types. To this, select the dotted line at one of the four positions in screen 20. The
dotted line is at the end of the list (see Screen 20 ).
§5.19 A
DJUSTMENT OF THE THROUGH FLOW MEASUREMENT
In Screen 23 it is easily possible to amend the calibration of the through flow measurement as a
percentage without having to convert the number of impulses (basic setting = 100 %).
The flow meter is calibrated for the use of water. On the other hand, if liquid fertiliser is applied, the
higher viscosity results in a deviating number of impulses per litre. If you now alter the setting of
the through flow measurement from 100 % to, for example, 93 %, the flow meter again registers
the correct number of litres.
In principle: If the actual through flow quantity is smaller than the displayed value, a value under
100 % is to be selected, if the actual through flow quantity is larger than the
displayed value, a value above 100 %.