MULTIPLEX
Atmospheric Oil Mist Detection System
AM8/JANUARY 2015
EMAIL [email protected] WEBSITE www.oilmist.com 4 East Barnet Road, London, England, EN4 8RW TEL +44 (0)20 7328 3121
Introduction
Part1-2
TECHNICAL SPECIFICATIONS
POWER SUPPLY
Nominally 110/240VAC 50/60 Hz
MAXIMUM POWER
CONSUMPTION
100W
MAXIMUM SAMPLING
CHANNELS
12
CYCLE TIME
500 milliseconds simultaneously on all channels
MEASURING SYSTEM
Time multiplex analogue signal
SYSTEM OUTPUTS - RELAYS
All relays fitted with maximum change contacts
voltage rating 110V@8A to 240V 5A
Main alarm
Normally energised with 1 set of change over
contacts
Early warning alarm
Normally energised with 1 set of change over
contacts
Function shutdown alarm
Normally de-energised with 1 set of change over
contacts.
Fault alarm
Normally energised with 1 set of change over
contacts
OPERATING TEMPERATURE
5-70°C
MULTIPLEX
DIMENSIONS (mm) WEIGHT (kg)
Central Monitoring Unit (CMU)
403 x 312 x 128
10
Sensor (DH)
359 x 113 x 73
2.30
MONITOR SEAL
Monitor is sealed to IP65
MAXIMUM DISTANCE
Maximum cable length between DHs and CMU is
100 metres. (for longer lengths contact QMI)
FUSE ARRANGEMENTS:
Internal FS1
-Head Interface 1.25A anti-surge
Internal FS2
-12V DC Fan Failure Supply 400mA anti-surge
Internal FS3
-400mA Data Logger PCB Protection
External FS4
-110/240VAC 3.15A anti-surge
OPERATING TEMPERATURE:
Monitor (Q01H)
5° - 70°C
FEATURES
Continuous self-monitoring fault diagnosis
Manual test facility of all functions
Functional shutdown (e.g. hydraulic pack)
OPTIONAL
4-20mA output for up to 12 individual alarms or
data-logging of alarms See Part 2-29 and 2-30.
