One to Four Zone Water Leak Detection Alarm With Distance To Leak Measurement Type DMWD

Sized at 180mm wide x 180mm high x 80mm deep, 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