LCP Series Liquid Level Control Relays detect and control levels of conductive liquids (tap water, seawater, sewage, chemical solutions, coffee, ice cream, etc.) in dual probe pump up or pump down applications. The conductive properties of the liquid complete a circuit between a probe and common when the liquid comes in contact with both. These relays compare the value of the measured resistance between probes with the setpoint of the adjustable potentiometer provided on the product. The output of the relay is used to control pumps, solenoids or valves to lower, raise or maintain the level of the liquid in the tank. Probes are pulsed with a DC voltage to prevent potential electroplating issues.
Two versions of Dual Probe products are available:
Pump Up (Fill): The relay energizes when the liquid level falls below the low probe and remains energized until the liquid level comes in contact with the high probe.
Pump Down (Drain): The relay energizes when the liquid level comes in contact with the high probe and remains energized until the liquid level falls below the lower probe.
