4 to 64 Zone Water Detection Alarm Type LD64

The LD64 water leak detection system has been designed to continuously monitor a large number of areas for water leaking from pipe work, air conditioning units, shower rooms, tea points, kitchens overflow systems damaged water tanks, overflowing sump tanks or ingress of water from outside the building.

The system consist of a control units containing a alphanumeric display, a Mute, Report, and back light push button, and a common alarm relay, new alarm relay and fault relay. The controller communicates using a 4 core data cable to between one and 16 remote outstations.

Each outstation will be factory configured as a one to four zone unit depending on the number of detection zones in an area, looking for water leaks or fault across the detection sensors. When water or a fault is detected by one of the outstation, the controller will display the type of alarm (“Water detected” or “Zone fault”) and location (“Floor 4 male toilets”), the audible warning device will start and the appropriate alarm relay will close.

The control unit will remain locked in this condition even if the water is removed from the sensor. Only Muting the alarm will unlock the display and stop the sounder. If the alarm is still active after muting, the display will continue to show the alarms location. If the alarm was cleared before the Mute button was operated, the display will revert back to its normal mode.

When the controller is detecting a number of alarms or faults, the “Report” push button can be used to view each one, one at a time. The system can also contains a 10 hour battery backup, water shut off valves, Text and or Email messaging and remote repeat alarm units.

All of the information below is available in our LD64 Water Detection Alarm pdf data sheet.

Standard Features

• Up to 64 zones using remote water leak detection 1, 2, 3 or 4 zone outstations
• Two Line 20 character alphanumeric display with Back Light for ease of Alarm identification
• On board audible warning device to alert local operators of a problem
• Alarms latched until Mute operated to give indication of transient water leaks
• Common Alarm, Common Fault and Power Fault output relay contacts to BMS
• Monitoring of each zone cable and sensor to ensure continuity and integrity
• AC sensing signal in the sensors to stop electrolyses and polarisation
• User defined alarm location wording shown in the display I.e. “4 Floor Male Toilets”

Optional Equipment

• Leak detected Lamps fitted inside the remote outstations giving local Alarm indication
• Water shutoff valve controlled from any or all of the outstation zones to stop a leak
• Electrical socket sized Remote audible and visual alarm unit for local alarm of a water leak
• 12 hour battery backup and power fault output relay to BMS

The LD64 water leak detection system has been designed to continuously monitor a large number of areas for water leaking from pipe work, air conditioning units, shower rooms, tea points, kitchens overflow systems damaged water tanks, overflowing sump tanks or ingress of water from outside the building.

Size 180 x 180 x 80mm

The system consist of a control units containing a alphanumeric display, Mute button, Report button, Back light button, common alarm and fault relays. The controller communicates to between one and 16 remote outstations that are designed to look for water leaks across the detection sensors, and report back to the controller if water has been detected or the zone has become faulty or disconnected. Each of the remote outstations can be factory configured as a 1, 2, 3 or 4 zone unit. When water or a fault is detected by one of the outstation zones, the controller will display the type of alarm (“Water detected” or “Zone fault”) and location (“4 floor male toilets”), the audible warning device will start and the common zone alarm or fault relay will close. The control unit will remain locked in this condition even if the water is removed from the sensor. Only Muting the alarm will unlock the display and stop the sounder. If the alarm is still active after muting, the display will continue to show the alarms location. If the alarm was cleared before the Mute button was operated, the display will revert back to its normal mode.

When the controller is detecting a number of alarms or faults and is not active with a new alarm, the display will show the number of current alarm and faults on the system. To find the location of all the current alarm or faults, pressing the “Report” button invites you to view them one at a time. The system can also contains a 10 hour battery backup in the event of a mains power failure.

Outstation type OS4V

Water leak detection with Valve shut off valve control

Size 120 x 120 x 60mm

Outstation type OS4

Standard 1 to 4 zone water leak detection

Size 180 x 130 x 80mm

Two types of outstations are available, the standard 1 to 4 zone type OS4 or the 1 to 4 zone with water valve control type OS4V. The OS4 unit only reports back to the main control unit if a leak or fault is found on any of its zones. The OS4V type will also control water valves to stop the flow of water when a leak is detected. Any or all of the OS4V zones can operate a water valve allowing, for example, zones 1 and 3 operated a 25mm water valve whilst zones 2 and 4 only reporting the presents of water. Inside the OS4V outstation a lamp for each zone has been provided for local indication of a water leak.

Unlike some other water detection units on the market, our system uses an AC signal within the sensors. Using alternating current stops electrolyses which causes the sensors to disintegrate leaving the 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 from the sensor. Also unlike other systems, only one zone is activated at any one time i.e. the system poles through each of the zones one at a time. This eliminated cross talk between zones leading to false alarms being generated.

Specification

• Housing type – ABS Plastic in light grey
• Mounting – Wall or surface
• Size – 180mm wide x 180mm high x 80mm deep
• Outstations – One to maximum 16, one to four zone on a system
• Input power – 50 Hz single phase 230VAC +/- 10%
• Burden – < 13VA
• Power termination – Internal 3 way terminal block
• Voltage Used to detect water – 10 VAC
• Voltage to outstation – 12 VDC
• Connections to outstations – Internal terminal block
• Access – Top, bottom , back or side
• Output contacts – Common Alarm, Common Fault & Power Fault
• Maximum time to detect water – Depending on the number of zones, between 1 and 11 seconds