Finder 072.11 – 72 Series Level control relays – Accessory

Why Choose the Finder 072.11 Floor Water Sensor?

The Finder 072.11 is a compact and reliable floor water sensor and flood detection probe designed to detect the presence of water on floor surfaces and other suitable mounting areas. As part of the Finder 72 Series liquid level monitoring accessories, it provides an effective solution for identifying water leaks, surface flooding and unwanted condensation in industrial, commercial and building services installations.

Designed for use with compatible Finder 72.01 and 72.11 liquid level control relays, the Finder 072.11 uses conductive sensing electrodes to detect the presence of water. When connected to a suitable monitoring relay, the sensor enables the control system to respond to detected moisture through an alarm, indication or connected control function. This makes it particularly useful for leak detection and flood prevention systems where early identification of unwanted water is essential.

Featuring stainless steel sensing electrodes, compact dimensions of approximately 44 × 32 × 26.5 mm and a maximum liquid temperature rating of +100 °C, the Finder 072.11 is suitable for a wide range of water monitoring applications. Its electrodes are positioned approximately 1 mm above the floor, enabling the detection of shallow surface water when installed correctly.

Key Advantages

• Compact floor water sensor designed for leak detection and flood monitoring.
• Compatible with Finder 72.01 and 72.11 liquid level control relays.
• 1 mm electrode-to-floor clearance supports detection of shallow surface water.
• Stainless steel sensing electrodes provide corrosion resistance and dependable operation.
• Supports water leak alarms and automated flood protection systems when connected to a suitable relay.
• Maximum liquid temperature of +100 °C for suitable monitoring applications.
• Supports sensor-to-relay cable lengths of up to 200 m, subject to cable capacitance requirements.
• Compact housing enables installation in restricted spaces and equipment enclosures.
• Suitable for detecting floor water, condensation and water leakage.
• Simple surface mounting with a fixing screw up to M5.

Key Features

• Finder 72 Series floor water detection accessory.
• Conductive water sensing technology for detecting water on surfaces.
• Designed for use with Finder 72.01 and 72.11 monitoring relays.
• Stainless steel sensing electrodes.
• 1 mm distance between electrodes and floor.
• Maximum liquid temperature of +100 °C.
• Maximum sensor cable length of 200 m with cable capacitance of 100 nF/km.
• Maximum cable diameter of 10 mm.
• Maximum M5 floor fixing screw.
• 9 mm wire stripping length.
• 0.8 Nm maximum terminal tightening torque.
• Compact sensor housing measuring approximately 44 × 32 × 26.5 mm.
• Connects to the B1 and B3 electrode terminals of a compatible Finder level control relay.
• Suitable for flood detection, leak monitoring and condensation sensing applications.

Reliable Water Leak Detection and Flood Monitoring

Water leakage and surface flooding can cause significant damage to electrical equipment, machinery, buildings and valuable assets. Early detection is essential for reducing the risk of equipment failure, operational disruption and water-related damage. Conductive floor water sensors provide a practical method of monitoring areas where unwanted water may accumulate.

The Finder 072.11 floor water sensor operates by detecting electrical conductivity between its sensing electrodes when water is present. Under normal dry conditions, the electrodes remain electrically separated. When conductive water reaches both electrodes, the connected Finder liquid level control relay detects the change and responds according to its configured operating function.

The sensor is designed to operate with Finder 72.01 and 72.11 liquid level monitoring relays. It connects to the relay's B1 and B3 electrode terminals, with the relay configured for the appropriate emptying function. The monitoring relay can then be incorporated into an alarm or control circuit to provide an indication of detected water or initiate a suitable protective response.

The 1 mm electrode clearance enables the sensor to detect shallow accumulations of conductive water when installed on a suitable level surface. Its compact design allows positioning near equipment, pipework, refrigeration systems and other locations where water leakage or condensation may occur.

For larger installations, the Finder 072.11 supports connection distances of up to 200 m between the sensor and compatible monitoring relay, provided the specified cable capacitance conditions are satisfied. This allows sensors to be installed at remote monitoring points while the associated control relay remains inside a protected electrical cabinet.

The Finder 072.11 is a passive sensing accessory rather than a standalone flood alarm. It requires a compatible monitoring relay and suitable external control or alarm equipment to provide an output response. Detection depends on the conductivity of the liquid, so it should not be treated as a universal sensor for non-conductive fluids.

Typical Applications

• Floor water leak detection in commercial and industrial buildings.
• Flood monitoring in electrical control rooms and equipment enclosures.
• Water leakage detection around pumps, valves and pipework.
• Condensation monitoring in refrigeration and cooling installations.
• Leak detection beneath air conditioning and HVAC equipment.
• Water monitoring in plant rooms and building services areas.
• Flood warning systems for basements and utility rooms.
• Industrial machinery protection against unwanted water accumulation.
• Water detection near washing and processing equipment.
• Monitoring of refrigeration cabinets and condensate collection areas.
• Leak detection in automated manufacturing and production facilities.
• Integration into building management and industrial alarm systems using compatible monitoring relays.