Monitoring Relays for level monitoring

The 3UG4 monitoring relays also detect non-electrical parameters. Our 3UG4501 level monitoring relays ensure reliable 1- or 2-point control and the generation of alarm messages in case of overflow or dry running on the basis of a simple principle: Almost all liquids are conductive, which is utilized for the monitoring of filling levels.
Current flows as long as the probes are immersed in the liquid – once the probes fall dry no current flows.

Advantages at a glance

  • Global applicability thanks to wide voltage range from 24 to 240 V AC/DC

  • Individually trimmable 2- and 3-pole wire electrodes for easy mounting from the top/bottom

  • Bow electrodes for lateral installation for higher filling levels and minimum space requirements

  • Flexible adjustability to various conductive liquids thanks to analog sensitivity setting from 2 to 200 kOhm

  • Compensation of wave movements thanks to tripping delay times from 0.1 to 10 seconds

  • Selectable feed or discharge function