Atmospheric Oil Mist Detection System
TM4 / AUGUST 2018
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Sheet-17
WIRING DESCRIPTION
The wires are terminated into screw type plugs. These plug into the connectors on the
TRIPLEX power supply board (PSB). They have to be plugged in the correct way round.
See photograph of power supply board Sheet-20.
WIRING FOR POWER SUPPLY 110/240 VAC
The Mains connector is a 3-pin with Live, Neutral, and Earth. On the Power Supply
Board this is marked L, N +
Cable is 3 core of 1.5mm
2
and can be sourced from Helkama part number is LKM - HF
3 x 1.5.
WIRING FOR SENSORS
The Sensors are wired using 3 twisted - pair cable. Each connector is wired left to right
and numbered 1 to 6. The cable specification is 3 twisted pair of 0.5mm
2
or 3
twisted pair of 0.75mm
2
where distance is over 100 meters.
This cable can be sourced from Helkama: part number is RFE - HF 4 x 2 x 0.5mm
2
or
4 x 2 x 0.75mm
2
.
Terminal 1 = Sensor
Terminal 2 = Sensor signal
Terminal 3 = Sensor supply common
Terminal 4 = Sensor signal common
Terminal 5 = Drain wire/ screen
Terminal 6 = Fan 12 volt DC supply
See drawing for wiring connectors (Sheet-23 and Sheet-28)
The cable to use for wiring of alarms can be the same as used for wiring of air sensors.
If you intend to use all four alarms you will need a 4 twisted pair cable.
Glands are not supplied as we do not know what diameter cable will be used. The
Monitor is supplied with Blind Grommets.
