ABB CM-ENS.21S LIQUID LEVEL MONITORING RELAY 0.1-1000kΩ 3 ELECTRODES CONTROL 24-240VAC 1CO

The Liquid Level Monitoring Relay is designed for filling or draining monitoring. It has a measuring range of 0.1 to 1000 kohm and uses three electrodes. The relay operates with a rated control supply voltage of 24-240 V AC/DC and features a 1 CO (SPDT) output. It is equipped with double-chamber cage connection terminals. This relay is specifically designed to monitor liquid levels of conductive fluids. It serves as a protection mechanism for pumps against dry running and tanks against overflow. The relay can operate according to the open- or closed-circuit principle, depending on the desired working principle and sensitivity. To adjust the working principle and sensitivity, simply use the front-face potentiometers provided.