Fire Fighting Enterprises Talentum UV/IR2 Flame Detector - Manual (Page 2)

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Application for Flame Detectors
Flame detectors are used when detection is required to be:
Unaffected by convection currents, draughts or wind
Tolerant of fumes, vapours, dust and mist
Responsive to a flame more than 25m away
Fast reacting
The detector is capable of detecting the optical radiation emitted by burning material even non-
carbonaceous materials. e.g. Hydrogen
Numerous other potential fire sources can be detected such as
Liquids Solids Gases
● Aviation Fuels (kerosene) ● Coal ● Butane
● Ethanol ● Cotton ● Fluorine
● Methylated Spirits ● Grain & Feeds ● Hydrogen
● n-Heptane ● Paper ● Natural Gas
● Paraffin ● Refuse ● Off Gas
● Petrol (gasoline) ● Wood ● Propane
Typical applications examples are:
● Agriculture ● Coal handling plant ● Pharmaceutical
● Aircraft hangars ● Engine rooms ● Power plants
● Atria ● Generator rooms ● Textiles
● Automotive industry ● Metal fabrication ● Transformer stations
- spray booths ● Paper manufacture ● Waste handling
- parts manufacture ● Petrochemical ● Woodworking
Applications and Locations to Avoid:
● ambient temperatures above 55°C ● large IR sources – heaters, burners, flares
● close proximity to RF sources ● obstructions to field of view
● exposure to severe rain and ice ● sunlight falling directly on the detector optics
● large amounts of flickering reflections ● spot lighting directly on the detector optics
Quantities Required and Positioning of Detectors
The number of detectors required and their position depends on:
the anticipated size of the flame
the distance of the flame from the detector
the angle of view of the flame detector
The flame detector is designed to have a class 1 performance as defined in BS EN54-10:2002
on the high sensitivity setting. That is the ability to detect an n-heptane (yellow) fire of 0.1m² or
methylated spirit (clear) fire of 0.25m² at a distance of up to 25m within 30 seconds.
The detector can be set to have to a lower sensitivity setting equivalent to class 3 performance.
Class 3 performance is defined as detecting the same size fires as for class 1 but at a distance
of only 12m.
Functional Testing
When 24Vdc power is applied to the detector
the green supply on indicator LED will
illuminate. The fault relay RL2, if selected
with the DIL switch, will energise and the
contact between terminals 7 and 8 will close.
If 24Vdc is applied to terminals 3 and 4 or
terminal 3 is linked to terminal 1 the detector
will perform a self-test. It does this by
causing internal optical test sources to
simulate the behaviour of flames and the
detector will alarm. Alternatively a portable flame sensor test unit
is available to generate simulated flame
behaviour and test the detector a few metres
in front of the detector. See Fig 12.
Finally, provided it is safe to do so, carry out
a flame test using a flickering flame source,
such as a portable Bunsen burner.
See Fig 13.
A still non-flickering flame will not produce a
response from the detector.
Fig 12 Portable Flame Detector Test Unit Fig 13 Portable Bunsen Burner
Service & Repairs
Servicing of the fire protection system should
be carried out by competent persons familiar
with this type of system, or as recommended
by the local regulations in force.
Only the manufacturer or equivalent
authorised body may carry out repairs to the
flame detectors. In practical terms this
means that flame detector may be repaired
only at the manufacturers factory.
*
6912
6913
7
4
WXYZ
0 #
PQRS 8 TUV 9
MNO 5 JKL 6 GHI
F4 F2 F3 F1
1 DEF 2 ABC 3
FLAME SENSOR TEST UNIT
SUPPLY
SIGNAL