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-31
1. The alarm outputs are transmitted from the Monitor to the Customers Control system.
2. The following alarms are fitted:
A. Early Warning Alarm
B. Fault Alarm
C. Shutdown Alarm
D. Main Alarm
3. The alarms operate via Open or Closed contacts (Relays).
4. Wiring one side of each block either open or closed requires a 6 core cable for 3 Alarms.
Wiring both sides of each block requires a 9 core cable for 4 Alarms.
Note: Cable core size 0.25mm (Minimum) to 2.50mm (Maximum).
5. To close on alarm, wire one core to NO and one core to C.
To open on alarm, wire one core to NC and one core to C.
ALARM OUTPUTS AND ALARM LEVELS
SCHEMATIC OF ALARM CONNECTIONS ON MONITOR RELAY BOARD (Q01T05)
% of Alarm
Level
Lights displayed
0% to 79%
Green
80% to 99%
Amber Flashing
100%
Red Flashing
Relays activated 80%
Early warning alarm
100%
Alarm and plant shutdown - Main alarm and, or
shutdown
(NOTE - Shutdown alarm is not included in the
test sequence)
