Unlike other water detection systems on the market, this system uses a two-way signal (alternating current) in the sensors. Using alternating current prevents electrolysis (which would destroy the sensors and prevent the system from detecting water).
Using alternating current also ensures that the sensors are continuously monitored, even when submerged. This allows the system to reset itself after the water is removed from the sensor, eliminating the need for further recovery or resetting. A battery backup for up to six hours is available, but a longer backup time can be provided upon request.
Technical adviceThe unit includes an audible signal, a mute button, and volt-free contacts for further signaling, such as notification to the BMS system or GSM notification unit.
If the system is free of alarms or faults, the display will show “The system has no alarms or faults.” If water is detected in any of the zones, the display changes to “Water Leak Detected Zone 1 Please Wait,” the audible warning sounds, and the general alarm relay is activated. If the system is equipped with the optional BMS zone alarm relay, the external beacon, and SMS notifications, these are also activated.
After a few seconds, the display changes to “Water Leak Detected Zone 1: 10 Meters” to show the distance to the leak from the start of the detection cable. The device remains in this state even if water is removed from the detection cable. Silencing the alarm will stop the audible warning. If multiple alarms occur simultaneously, the audible warning will restart immediately after the first silence, and the display will show the next zone with the detected leak and its distance.
After silencing the alarm, provided the water leak has been cleaned and the detection cable has dried, the system will automatically reset. Each zone is equipped with its own sensitivity potentiometer, allowing the sensitivity to be set to high or low. This potentiometer should be used in areas known to have high humidity or water splashes (low sensitivity) or in areas where small leaks need to be detected (high sensitivity).
A common alarm and a common fault/power failure relay are supplied as standard, which can be used for reporting to a building management system, telephone dialer, or control systems. If required, the unit can also be equipped with individual alarm relays that notify a building management system (BMS) which zone is in alarm.
If required, the unit can be equipped with a 230VAC output to control water shutoff valves. As soon as a zone detects a leak, the zone shutoff valves will shut off the water source until the leak is repaired.
If necessary, the shutdown can be overridden using the “Shutdown Override” pushbutton. The button is only active when the system has a leak and should operate for a few seconds until the horn stops beeping. The same procedure can be used to close the shutoff valve and turn off the water source. An internal light indicates whether the water shutoff valve is “closed.”
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