Leakage Sensor for Water/Pipe Break Detection

The Leakage sensor Leak includes an evaluation unit and a probe. If there is water between the electrodes of the probe, the evaluation unit produces an acoustic alarm.
Additionally, the alarm output of the evaluation unit switches on. The output can be used to transmit the alarm signal to other systems (e.g. klaxons, light indicators, stop valves, building control system, alarm system). The changeover contact design of the output makes it possible to detect wire breakage in the alarm line by suitable systems.

  • Leak Leak
  • Detailed view probe Detailed view probe
  • Detection of water on the probe
  • Acoustic alarm signal by the evaluation unit during a water alarm (sustained beeping tone). Short beeping during the follow-up time (1 minute after the end of the alarm)
  • Output for alarm reporting (potential-free changeover contact)

Analysis unit:

Casing Plastic
Colour Grey
Installation Surface mounted
Protection category IP 20
Dimensions approx. 118 × 86 × 65 (W × H × D, mm),
Weight approx. 460 g
Ambient temperature Operation -20…+70 °C, storage -55…+90°C.
Ambient humidity max. 95 % RH, avoid condensation
Operating voltage 230 V AC, 50 Hz
Power consumption no alarm: approx. 1 W
with alarm: approx. 4 W
Probe input 1 x electrode probe,
plug-in BNC terminal
Alarm output 1 × potential-free changeover contact,
max. 230 V AC / 3 A,
max. 30 V DC / 3 A,
Connector NC/Com/NO


Casing Polished stainless steel
Installation for placing on the floor
Protection category IP 68
Electrode chemical resistanceWater
Dimensions Diameter: approx. 77 mm
Cable length approx. 140 mm (plus cable grip and plugs)
Weight approx. 200 g