The DMWD has been designed to monitor up to four independent zones for water leaks in critical areas via linier detection cables and display the source of the leak as a distance. Each zone can be fitted with a minimum of 10m to a maximum of 50 metres of pre-made linier water detection cable. Once a leak has been detected the system activates the distance measurement circuit to ascertain the distance to the leak from the start of the detection cable run. The unit also comes as standard with monitoring for disconnection / damage to any or all of the four zone water detection cables including the interconnecting cable. Any disconnection of any detection cable from the controller will instigate a Sensor Fault alarm. The unit contains an audible warning device, Mute push button, and volt free contacts for onward signalling optional equipment can include: water shutdown in an alarm, sounder beacon, text messaging and individual alarm volt free contacts.

The DMWD has been designed to monitor up to four independent zones for water leaks in critical areas via linier detection cables and display the source of the leak as a distance from the start of the detection cable. The system can be factory configured between 1 and 4 zones. Each zone can be fitted with a minimum of 10m to a maximum of 50 metres of pre-made linier water detection cable. Unlike some other systems on the market, the DMWD detects leaks by using a conventional AC current detection circuit to stop erosion of the sensors by electrolysis. Once a leak has been detected the system activates the distance measurement circuit to ascertain the distance to the leak from the start of the detection cable run. Having determined and displayed the distance the unit will automatically revert back to the AC detection circuit to allow the system to automatically reset once the leak has been cleaned up. The unit also comes as standard with monitoring for disconnection / damage to any or all of the four zone water detection cables including the interconnecting cable. Any disconnection of any detection cable from the controller will instigate a Sensor Fault alarm. The unit contains an audible warning device, Mute push button, and volt free contacts for onward signalling.

  • The unit can be supplied as a 1, 2, 3 or 4 zone system
  • Distance measurement in metres to the source of a leak
  • Large back lit alpha numeric display
  • Internal Zone Alarm and Fault lamps
  • With the exception of mains power, all terminals are of the plug and socket type
  • Bi-directional DC signal in the sensors to stop electrolyses and polarisation
  • Individual Zone sensitivity adjustment allowing any zone to be set for high to low sensitivity
  • Monitoring of each zone cable and sensor to ensure continuity and integrity
  • On board audible warning device to alert local operators of a problem
  • Alarms latched until Mute operated to give indication of transient water leaks
  • Zone signal isolation to stop multiple alarms due to sensors coming into contact with Earth
  • Common alarm relay contact for onward signalling to a BMS
  • Common cable Fault and power fault relay contact for onward signalling to a BMS
  • Optional water shutoff valve control with internal valve closed lights
  • Optional individual zone alarm relay contacts for onward signal to a BMS
  • Optional zone alarm water shutoff valves to turn off the water source when a leak is detected
  • Optional alarm output to a flashing Beacon
  • Optional alarm output to a flashing Beacon and Mutable Sounder
  • Optional SMS text messaging to two phone numbers
  • Optional 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.

DMWD information pdf data sheet.

 

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 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

Individual alarm relays for each zone
Individual zone alarm relays can be provided to give a volt free normally open, closed in alarm contact that operates when the zone goes into alarm. The contacts can be used to onward signal to Building Management Systems or to control individual water valves.

Individual alarm relays for each zone

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