It is used to control the level of conductive liquids in tanks and boreholes. It is connected to pendant type electrodes and mounted on a panel rail.<\/p>\n
Its operation is based on measuring the resistance of the liquid between the electrodes with the ability to adjust the measured conductivity from 5 - 50K\u03a9. The relay is activated when the liquid level reaches the upper electrode and is deactivated when the level \u201cfalls\u201d below the middle electrode.<\/p>\n
The lower of the three electrodes serves as a reference and can be replaced by ground when the tank is metallic. The use of a safe low alternating voltage between the electrodes prevents the phenomenon of electrolysis.<\/p>","protected":false},"excerpt":{"rendered":"
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