One and two zone water leak detection alarm with shut off valve control to turn off the water supply when water is detected. Features include, valve shutoff override push button, large visual display, audible warning devise, mute alarm push button and individual onward signalling relays for alarm and fault.  This product also has an optional battery backup and output to beacon or beacon sounder.

Sized at 180mm x 130mm x 80mm deep, the one and two zone water detection units have been designed to monitor critical areas for water leaks via spot sensors or linier cable and shut down the water supply using 230VAC water shutoff valves when a leak is detected. A valve shutdown override push button is provided internally allowing the water services to be turned on whilst waiting for the cable to dry out.

Any number of spot sensors or a maximum of 50 metres of linier water detection cable can be connected to each zone. The range comes as standard with monitoring of the interconnecting cable between the sensors and the control unit. Any disconnection of the sensors from the controller will instigate a “Sensor Fault” alarm.

Once a water leak has been detected, the display will flash showing the leak location, the audible warning device will start and the common alarm relay will close.

Once a water leak has been detected, the controllers display will show the leaks location and start to flash, the audible warning device will start and the common alarm relay will close. The unit will remain in this condition even if the water is removed from the sensor.

Only muting the alarm will stop the sounder, stop the display flashing and de-latch the alarm. If water is removed from the sensor before pressing the “Mute Alarm” button, after Muting the display will revert back to the normal screen and the common alarm relay de-energise.

However, if water is still being detected only the audible warning will. Only when the water has been removed will the display change back to normal mode and the relay de-energise. The unit has a common alarm set of volt free contacts for onward signalling to Building Management Systems (BMS), telephone dialler, control systems.

Each zone is provided with a sensitivity potentiometer and has been provided to allow individual zones to be set to high sensitivity for sensitive areas or low sensitivity for areas known to experience high humidity or water splashes.

Unlike other water detection units on the market, our units use a bi-directional (AC) signal within the sensors. Using alternating current stops electrolyses which causes the sensors to disintegrate and a system unable to detect water.

The use of alternating current also allows the sensors to be continually monitored even when submersed in water. This allows the system to self-reset after water has been removed for the sensor and no further action to reinstate or reset the system is required from the operator.

Standard Features

  • Water leak detection cable or spot probe or a combination of both can be used
  • Alpha numeric display for ease of Alarm identification from a distance
  • On board audible warning device to alert local operators of a problem
  • Alarms latched until Mute operated to give indication of transient water leaks
  • As standard, a common zone fault or power fault relay for onward signalling to a BMS
  • As standard, a common water detected alarm relay for onward signalling to a BMS
  • Monitoring of each zone cable and sensor to ensure continuity and integrity
  • Individual Zone sensitivity adjustment allowing any zone to be set for high to low sensitivity
  • A Bi-directional DC signal in the sensors to stop electrolyses and polarisation
  • Zone Alarm test push button located inside to panel

Optional Features

The following options can be added to the standard unit, please advise options at the time of ordering;

  • Individual zone alarm volt free output contacts
  • Output to flashing Beacon
  • Output to Beacon sounder that stops when the “Mute” push button is operated
  • Text messaging when an alarm is generated
  • Remote repeat alarm unit with separate “Mute” push button type SCA
  • Water valve shutdown using our LD2-2V range
  • 12 hour Battery backup

Water detection cables
cable

The water detection cables for this product are made to order, any length of cables to a maximum of 100m signal and 50 metres of water detection can be manufactured. The signal cable (white above) is used to connect between the alarm panel and the start of the detection cable.

All of the information below is available in our Single and Two Zone Water Leak Detection Alarm Type LD2-3 and LD2-3V data sheet.

The LD2-3 range has been designed to monitor critical areas for water leaks via spot sensors or linier cable. Any number of spot sensors or a maximum of 50 metres of linier water detection cable can be connected to each zone. The range comes as standard with monitoring of the interconnecting cable between the sensors and the control unit. Any disconnection of the sensors from the controller will instigate a “Sensor Fault” alarm. Complete with an audible warning device, mute push button. The alarm type and location is displayed on a back lit alpha numeric display unit.

Standard Features

  • Water leak detection cable or spot probe or a combination of both can be used Alpha numeric display for ease of Alarm identification from a distance
  • On board audible warning device to alert local operators of a problem
  • Alarms latched until Mute operated to give indication of transient water leaks
  • As standard, a common zone fault or power fault relay for onward signalling to a BMS
  • As standard, a common water detected alarm relay for onward signalling to a BMS Monitoring of each zone cable and sensor to ensure continuity and integrity
  • Individual Zone sensitivity adjustment allowing any zone to be set for high to low sensitivity
  • A Bi-directional DC signal in the sensors to stop electrolyses and polarisation
  • Zone Alarm test push button located inside to panel

Optional Features

  • Zone 1 and or zone 2 alarm output relay contact for onward alarm signalling
  • Output to flashing beacon or sounder/beacon
  • SMS text messaging to one or two mobiles
  • Remote repeat alarm unit type SCA with independent “Mute” alarm button
  • Battery backup

Once a water leak has been detected, the display will flash showing the leak location, the audible warning device will start and the common alarm relay will close. The unit will remain in this condition even if the water is removed from the sensor. Muting the alarm will stop the sounder and stop the display flashing. Providing water has been removed from the sensor, after pressing the “Mute” alarm button the display will return to normal mode and the common alarm relay de-energise. However, if water is still being detected only the audible warning will stop leaving the display showing the location of the leak and the alarm relay energised. As standard all LD2-3 units have a common alarm and common zone fault / power fault set of volt free for onward signalling to Building Management Systems (BMS) or control system.

Optional Features

The following options can be added to the standard unit, please advise options at the time of ordering;

1)  Individual zone alarm volt free output contacts
2)  Output to flashing Beacon
3)  Output to Beacon sounder that stops when the “Mute” push button is operated
4)  Text messaging when an alarm is generated
5)  Remote repeat alarm unit with separate “Mute” push button type SCA
6)  Water valve shutdown using our LD2-2V range
7)  12 hour Battery backup

Each zone is provided with a sensitivity potentiometer, this has been provided to allow individual zones to be set to high sensitivity for sensitive areas or low sensitivity for areas known to experience high humidity or water splashes. Unlike some other water detection units on the market, the LD2-3 range from CMR electrical uses a bi-directional (AC) signal within the sensors. Using alternating current stops electrolyses which causes the sensors to disintegrate and a system unable to detect water. The use of alternating current also allows the sensors to be continually monitored even when submersed in water. This allows the system to self reset after water has been removed for the sensor.

Specification

  • Housing type – ABS, colour light grey similar to RAL7035
  • Mounting – Wall, flush or surface
  • Access into Housing – Bottom or bottom back
  • Size Standard unit – 180mm wide x 130mm high x 80mm deep
  • Input power – 50 Hz single phase 230VAC +10% – 6%
  • Burden – < 4VA
  • Power termination – Internal 3way terminal block
  • Voltage to sensor – Bi-directional 5VDC
  • Connections to sensor – Internal plug-in terminal block
  • Common Alarm output contacts – Changeover contact rated at 1amp 30VAC/DC
  • Common Fault output contacts – Changeover contact rated at 1amp 30VAC/DC
  • Individual Alarm output contacts – Changeover contacts rated at 1amp 30VAC/DC
  • Display character size – White backlit 5.95mm high x 3.2mm wide

Beacon for remote indication of an alarm
This 12VDC Flashing beacon can be used to advise of an alarm were noise is an issue such as hospital corridors or noisy environments.

Beacon

SMS Text Messaging alert unit
For unmanned areas or to advise maintenance staff of a problem. With the addition of our SMS Text Messaging alert unit, an alarm will also be sent in text form to one or two phones. This unit is usually added where the alarm unit is mounted remote from maintenance staff, or in unmanned areas.

SMS Text Messaging alert unit

Battery backup
With the addition of battery backup power the alarm system will operate up to 10 hours when the alarm units mains power is turned off or in a power cut. This is recommended for sensitive areas were a UPS and backup generator power is not available.

Battery backup

Water Valve
Water Valves to turn off the water supply when a water leak is detected 230VAC power open, slam shut water valves can be provided from ¼” to 2” BSP sizes. Pipe couplers are also available on request.

Water Valve

Repeat alarm type SCA
Outstations can be provided with a common water leak detected audible and visual indication unit type SCA. This unit being a standard double gang electrical blanking plate, is complete with an audible warning device, alarm lamp and “Mute” push button. The SCA unit can be manufactured in any type or style of double gang blanking plate allowing it to blend in with its surroundings.

Repeat alarm type SCA

Water Detection Cable Clips
Clips can be provided to keep the water detection cable in position.

Water Detection Cable Clips

Water L=Detection Cable
Cable designed to detect water along its entire length

Water Detection Cable

Signal Cable
Used as a low cost cable between the alarm unit and the water detection cable

Signal Cable

Water Detection Spot Probes
Used in areas were water detection cable could be damaged

Water Detection Spot Probes

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