Used in conjunction with 3 conductive probes connected to terminals 5 (high), 6 (middle/low) and 7 (bottom/common). Filling: When the liquid drops below the middle probe, the relay energises. The relay remains energised until the level reaches the high level probe and then deenergises. Emptying: When the liquid rises above the high probe, the relay energises. The relay de-energises when the liquid falls below the middle probe. Sensitivity – 50k
Use Avanti AEL hanging probes
