OPERATION MANUAL
Technical changes reserved
0141 0316-112 31.08.2020
Level controller for conducting liquits
WLS-GEH230V
3.2
Switching point adjustment
The switching point is adjusted as per conductivity of water with the preset potentiometers. In normal practice, it is good enough to leave the poten
-
tiometer in the most sensitive position (left side limit). This corresponds to a switching point of approx. 12 µS. This works for most of the applica-
tions with clean rain water or tap water. If required, the sensitivity of each electrode can also be separately adjusted. By turning the potentiometer
in the anti-clockwise direction, the electronics become less sensitive and this gives better results with contaminated water. In normal practice, all
potentiometers should be kept at the same position and only for very diverse conditions of electrodes with respect to the reference electrode or for
different lengths of connection lines, it is practically required to separately adjust the sensitivity. After any change in cable length of the connection
lines, the adjustment should be checked again.
3.3
Light emitting diodes (LEDs)
The device status is indicated by a set of 8 LEDs which are placed at the lower edge of the PCB:
LED
Funktion
P
Power, Operating voltage 5 V
E
Container empty, none of the electrodes are in contact
1
E1 Level 1
2
E2 Level 2
3
E3 Level 3
4
E4 Level 4
R2
Status Relay 2, for upper electrode pair E3 and E4
R1
Status Relay 1, for lower electrode pair E1 and E2
The LEDs are also provided on the front side for display of device status. In addition, two pushbuttons are also provided by which the relays can
be manually switched ON.
3.4
Configuration of operating mode
The switching polarity of the relay (Fill/empty) can be adjusted by two jumper plugs. The jumper plug “MODE1“ is meant for Relay 1 (lower level)
and jumper plug “MODE2“ is for Relay 2 (upper level).If connected in position 1-2, the relay switches ON with rising level and in position 2-3, the
relay switches ON with falling level.
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