Security products

Water leak detection systems

Cable and spot sensing under floors and along pipe routes, so a leak is an alarm at the desk rather than a discovery on Monday.

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Installation photo — water sensing cable under a raised floor

Scope: Survey → commissioning → AMC
Typical use: Data centres, plant rooms, basements

What it is

Water finds the equipment before anybody finds the water

A weeping CRAC unit, a chilled water joint, a blocked condensate tray or a failed valve puts water under a raised floor where nobody is looking. It spreads along the void, finds a cable transit or a power distribution unit, and the first anyone knows about it is equipment tripping — usually at a weekend. The cost is almost never the water; it is what the water reached.

Leak detection makes that a monitored condition. Sensing cable runs along the pipe routes, under the CRAC units, around the tank and in the low points of the floor void, and reports as soon as it is wetted; spot sensors do the same in trays, sumps and drip points. On a locating system the panel reports the distance along the cable, so somebody is sent to the right tile rather than lifting the whole floor.

It is cheap relative to what it protects and it is straightforward to retrofit during a shutdown window, which is why it is usually the first thing recommended on an existing data hall that has had a scare. We survey the routes and the low points, lay out the sensing accordingly, interface the panel to the BMS or the security desk so an alarm reaches a person, and test it with water at commissioning rather than with a shorting link.

Equipment

What the installation is built from

Sensing along the routes water will actually take, and a panel wired to somewhere a person will see it.

Water sensing cableRun along pipe routes, under CRAC units and around the low points of the floor void.

Spot and probe sensorsIn drip trays, sumps, tank bunds and drain pits where a cable run would not sit properly.

Locating controllerReports the distance along the cable, so the leak is found without lifting the whole floor.

Zone controller and repeat panelsFor simpler installations, and for a repeat indication at the security desk.

Fixings and route layoutCable held clear of standing condensate and laid where water will run, not where the drawing is tidy.

BMS and security desk interfaceVolt-free contacts or network integration, so the alarm reaches somebody on a Sunday.

Valve shut-off interfaceWhere a motorised valve can isolate the supply on a confirmed leak instead of waiting for a person.

Wet test at commissioningTested with water at the far end of each run, with the reported location checked against the actual one.

Tell us about the project

Send the drawings or the BOQ and we will price it line by line. Most enquiries start with a site visit, because the site decides the system — not the catalogue.

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