Electrical resistance variation, caused by the presence of a liquid between two electrodes, converted by level relay as ON/OFF signal (see data-sheets relay ES 2001, 530-01 and 233-01 for RXM).
Electrode length is adjusted according to distance of trigger point.

• Level control or regulation, on open tanks or closed tanks, piping, open channels, etc.
• Detection of presence or lack of liquid (leaks, empty piping, dry run detection for pumps).

Each probe has three parts:
- Cast aluminum head (IP 55) with screw terminals and cable gland (Excepted on MINITEV)
- Fitting: AISI 316 L with PTFE insulator(s).
- Electrodes: AISI 316 L, 1 to 4 electrodes (according the model) at necessary length.
Electrical connection: with end tip to the terminal.
A ground connection is available inside the housing IP55.