Nero - Moisture Detection

"Nero" - Water Detection System

Origins of Water Leaks

Air conditioning units, sprinkler systems, water cooled processors, general water supplies, blocked drains, damaged windows, building construction faults, condensation and heating systems are all potential sources of water leakage which if undetected can seriously damage today's complex electrical, communication and computer networks even a small leak can prove disastrous. Statistics show industrial losses due to water leaks of between US$1 million + US$2.8 million PER HOUR (Ontrack Int'l - information source).

Features

• Auxiliary alarm contacts
• Monitored alarm outputs
• Fully monitored - open & SHORT CIRCUITS
• Zonal repeat contacts
• Easy to install
• Easy to service and maintain
• Bright dual LEDs
• Clean low profile appearance
• Diagnostic fault LEDs
• Lockable enclosure
• Special colour and finishes available

Product Overview

"Nero" Water Detection System continuously monitors installed systems and potential hazards - 24/7. System control panel plus recoverable moisture sensitive cable or point type localised detection probe - directly or via a simple two core leader cable - provides rapid and cost effective installation. Upon detection of a leak the green alarm lamp on the control panel will flash accompanied by a warning buzzer. The alarm may be extended to a remote location by extension sounder/indicator units. Disconnection of a moisture detection probe or break in the "Nero" moisture sensing cable is immediately indicated on the control panel by the yellow line fault indicator. This ensures that the integrity of the system cannot be compromised without a warning.

Floor Mounting Probe - PR-2101

This adjustable height probe is simple screwed into the floor and adjusted to give the required detection level. An LED indicator on the top of the probe gives a clear indication of which probe has been activated and this may be extended to a remoter lamp location (e.g. above false floor level) using a remoter indicator. The probe is connected to the control panel wiring via a flexible cable which plugs into the probe. This plug connection is monitored by the line fault circuit of the control panel.

Drip Tray Mounting Probe - PR-2101

This probe has exactly the same facilities as the floor mounting probe but has a bracket for mounting onto the side of an air conditioning unit drip tray. The probe is then adjusted to give the required detection level and plugged into the detection circuit.

"Nero" Moisture Sensing Cable

Available as either standard 5 metres, 10 metres or custom designed lengths. "Nero" is a flexible cable which will continuously monitor large areas. When even a small amount of water comes into contact with the sensing cable it is absorbed by capillary action thereby triggering an alarm.

After the source of the leak has been removed "Nero" will dry out in around 20minutes for use again. Unplugging or cutting the "Nero" cable will be immediately indicated on the control panel by the line fault indicator. Longer runs can be made by simply plugging lengths of "Nero" together. Special lengths can be made to order. Each zone requires a junction box and end of line DIN plug.

Alarm Location

For installations that would benefit from Alarm point indication in addition to a common alarm signal, a programmable control with RS232 4-20mA and 4 relay outputs is available. Connection to 5000ft of moisture sensing cable.

Technical

Control Panels Specification

ABS Enclosure - 1, 2, 4 & 6 Zones

• Size -315W x 235H x 84D
• Construction -flame retardant ABS injection
• Power supply -1.25 Amp
• Battery capacity -7.0A/h 24 hour standby 2.8A/h Max. battery capacity 7.0A/h
• Finish light texture Standard colour stone grey
• Sounder outputs - 2 outputs each rated at 500mA
• Isolate remote control - volt free changeover 1 Amp at 30 V DC fused at 500mA
• Auxiliary alarm contact - volt free changeover 1 Amp at 30 V DC
• Sounder fuses - 500mA each

Metal Enclosure - 2, 4, 8, 12, 16 & 24 Zones

• Construction -zone 1.2mm fully welded sheet steel
• Finish -epoxy powder coat
• Standard colour -2 tone grey
• 2 & 4 zone size -365W x 290H x 88mmD
• 8 & 12 zone size -500W x 355H x 107mmD
• 16 & 24 zone size -570W x 420H x 110mmD
• Power supply
  • -1.25 Amp (2, 4 & 8 zone)
  • 2.5 Amp (12, 16 & 24 zone)
• Max. battery capacity
  • -4.0A/h (2 & 4 zone)
  • 6.0A/h (8 zone)
  • 7.0A/h (12 zone)
  • 12.0A/h (16 & 24 zone)
  • 230V AC

Technical - Localised Detection Probes

• Size - 95mm (max.) 80mm (min.) H x 45mmD x 100mmW
• Indicator - green LED Connection -4 pin din flying lead (1 metre)
• Material - black nylon

Guidlines - "Nero" Cable

Maximum recommended length per zone50 metres Recommended pitch between cable for area protection2 metres Minimum bend radius150mms