General Description

The cable can be installed under raised floors, along walls, around pipes, in drip trays or close to air-conditioning systems. This makes it possible to protect large or difficult-to-access areas where a single point detector may fail to identify a leak at an early stage.

Its high sensitivity allows the detection of even small amounts of conductive liquid. When connected to a compatible WLD monitoring device, the detection event can trigger an alarm, helping users react early and reduce the risk of damage to equipment, stored goods and infrastructure.

The sensing cable is designed for long-term use and offers high resistance to movement, twisting and localised pressure under normal installation conditions. After a leak event, it can be cleaned, dried and reused, provided it has not been mechanically damaged.

Key Features and Benefits

Continuous and Early Detection

Detection takes place along the complete length of the sensing cable, making it possible to identify a leak even when the water appears far from the monitoring device. Only a small amount of conductive liquid may be required to trigger an alarm.

High Flexibility – No Defined Bending Radius Limit

The WLD Type A sensing cable is not restricted by a defined bending radius. It can be bent, twisted and adapted to the installation route while retaining its functionality. This simplifies installation in confined spaces, around pipes and along irregular routes.

Resistant to Localised Pressure

Detection functionality is not limited by localised pressure within reasonable operating conditions. The cable can be stepped on or pressed during normal installation without those mechanical effects necessarily causing false alarms. It can also be routed under a door threshold.

Reusable After a Leak Event

After detecting a leak, the sensing cable can be cleaned and dried. Provided it has not been damaged, it can be returned to service, helping reduce the long-term maintenance costs of the WLD system.

Easy and Cost-Effective Installation

The sensing cable can be installed even after other electrical cabling has already been fitted and does not require specialised training. Combining sensing sections with non-sensing extension cables allows the sensing cable to be concentrated only in the areas where leakage is most likely, helping optimise installation costs.

Recommended Applications

• Data centres: water detection under raised floors, near racks and close to cooling systems.
• Technical rooms: protection of electrical, electronic and communications equipment.
• Industrial facilities: monitoring around pipes, water circuits and technical equipment.
• Warehouses: protection of stored goods and storage areas.
• Laboratories and healthcare facilities: early leak detection in areas containing sensitive equipment.
• Hotels and buildings: water detection in technical areas and difficult-to-access locations.
• Archives and museums: protection of documents, collections and assets sensitive to water damage.
• Wooden constructions: early detection of leaks and water ingress.
• Drip trays: monitoring of water originating from pipes or equipment.
• Integration into building security and technical monitoring systems.

How does a WLD system work?

A WLD system uses a sensing cable to detect the presence of conductive liquid and a compatible monitoring device to interpret the status of the WLD zone and communicate alarms when required.

The WLD system can distinguish three detection states:

A detected leak can be communicated through the functions available in the connected WLD device, including local alarms, email, SNMP or integration with a remote monitoring portal, depending on the system used.

WLD Zone Components and Configuration

A WLD installation can combine sensing cable sections and non-sensing extension cables to match the physical layout of the areas requiring protection.

• WLD Connecting Cable AB: 2 m connection cable with terminal connection to the WLD device and terminator.
• WLD-Sensing Cable A: sensing cable available in 2 m, 10 m and 50 m lengths.
• WLD Extension Cable AB: 5 m non-sensing extension cable.

The maximum sensing cable length within one zone is 85 metres. By combining sensing cable with non-sensing extension cable, the overall zone can reach up to 185 metres, depending on the connected WLD device. For the NB-WLD, the specified total limit is 60 metres.

A terminator is required at the end of the WLD zone. The terminator is included with the appropriate WLD connection cable.

Compatible HW group Devices

The WLD-Sensing Cable A can be used with HW group devices equipped with a compatible WLD input, including:

• WLD2: LAN and Wi-Fi water leak detection system with support for up to four WLD zones.
• SD-WLD: monitoring of one WLD zone via Ethernet or Wi-Fi and a remote portal.
• NB-WLD: water leak detection using NB-IoT communication.
• WLD Relay 1W-UNI: water leak detection with relay output and 1-Wire UNI interface.
• Perseus: Perseus models equipped with a compatible WLD input.

When integrated into the HW group ecosystem and platforms based on SensDesk Technology, the complete monitoring system can provide remote alarms, graphs, PDF reports, centralised management and open integration interfaces, depending on the connected hardware and service plan.

Technical Specifications – WLD-Sensing Cable A 2 m

FAQ – Frequently Asked Questions

What does the WLD-Sensing Cable A detect?

The cable detects water and other electrically conductive liquids, such as ethylene glycol, at any point along its sensing length.

What is the difference between a WLD sensing cable and a point flood detector?

A point flood detector only detects water at the specific location where the detector is installed. A WLD sensing cable detects liquid along its entire length and can therefore monitor a much larger area.

Can the WLD cable operate on its own?

No. The cable must be connected to a compatible WLD monitoring device that interprets the zone status and handles alarms or external communication.

What is the maximum length of a WLD zone?

The sensing cable itself can reach up to 85 metres per zone. By using non-sensing extension sections, the overall zone length can reach up to 185 metres, depending on the monitoring device. The specified limit for NB-WLD is 60 metres.

Can the sensing cable be reused after a leak?

Yes. The cable can be cleaned, dried and reused, provided it has not suffered physical damage that could affect operation.

Can the cable be installed under raised floors?

Yes. It can be installed under raised floors, along walls, around pipes and in other areas where water leakage may occur.

Can movement of nearby cables cause false alarms?

The WLD-Sensing Cable A is designed to tolerate normal movement, twisting and localised pressure. Small movements caused by surrounding cables are not intended to trigger false alarms.

Which devices can be used with this sensing cable?

The cable can be used with compatible HW group systems including WLD2, SD-WLD, NB-WLD, WLD Relay 1W-UNI and Perseus models equipped with an appropriate WLD interface. Cable-length limits and alarm capabilities depend on the selected device.