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OPERATION MANUAL
Technical changes reserved
0141 0316-112 31.08.2020
Level controller for conducting liquits
WLS-GEH230V
2.
Description
2.1
Functional description
The control device is used for regulating level of conducting liquids like supply line water, rain water or condensate. The measurement of level in the
reservoir is done with the help of electrodes, for which either contact surface of the reservoir walls or self made rod type electrodes can be used.
With two independent circuits, simultaneous monitoring of both minimum and maximum liquid levels and control of two actuators are possible, for
example, two valves („fillinge valve“ and „drain valve“).
In liquid reservoir, four electrodes (E1..E4) are mounted in the medium, at heights corresponding to the required switching point.
According to water contact, the fill level is indicated through 4 green LED´s L1 to L4. If the reservoir is completely empty, the red LED glows.
For example, the lower pair of electrodes (E1,E2) can be used to control a filling valve at the inlet. After release of the lowest electrode E1, the filling
valve is switched ON and switched OFF again on wetting of the second electrode E2 (Hysteresis).
For example, the upper pair of electrodes can be used to control a drain valve or a pump. During contact with the topmost electrode E4, the drain
valve is switched ON and again switched OFF after release of the lower electrode E3 (Hysteresis).
The switching behaviour of the system (Filling/Empty) is to be configured over two jumper plugs. The sensitivity of the electrodes can be adjusted
through potentiometers (approx. 15 kΩ... 80 kΩ).
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