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Fuel
Fire size
n-Heptane fire in the presence
0.3 m x 0.3 m pan
of arc welding
n-Heptane fire in the presence
0.3 m x 0.3 m pan
of a 500 W halogen lamp
n-Heptane fire in the presence
0.3 m x 0.3 m pan
of a 1500 W heater
Gasoline fire
0.3 m x 0.3 m pan
JP4 fire
0.3 m x 0.3 m pan
Methanol fire
0.3 m x 0.3 m pan
Jet A-1 fire
0.3 m x 0.3 m pan
The flame detector has three sensitivity settings to deliver flexibility in a
multitude of applications and to ensure detectors do not cross-vote.
The flame detector has, according to standard FM 3260, a high insensitivity to
frequent false alarms such as hot objects and hot work.
2.2.2
Field of view
The flame detector has a horizontal field of view of 100° and a vertical field of
view of 80°. The typical field of view and detectable range of a 0.1 m
Heptane pan fire at standard sensitivity is illustrated below. 100 % = 39 m
Instructions for use
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Distance
FM
certi-
fied
39 m (128 ft)
yes
39 m (128 ft)
yes
39 m (128 ft)
yes
39 m (128 ft)
30 m (98 ft)
30 m (98 ft)
A
30 m (98 ft)
B
2.2.3
There are two emitters (one infrared and one UV) located on the fascia of the
detector which emit light onto the internal and external surfaces of the sapphire
lens. The reflections of light are continually monitored by the detector and if they
are disturbed by contamination on the inside or outside of the lens, the detector
signals an optical fault.
The optics of the flame detector can also be checked using the
2
n-
Dräger Flame Simulator FS-5000 (serial number of J01001 onwards).
2.2.4
The flame detector is certified for use in some potentially explosive
atmospheres. The explosion protection approval is valid for use of the device in
gas/vapour-air mixtures of combustible gases and vapours under atmospheric
conditions. The explosion protection is not valid for use in oxygen-enriched
atmospheres.
A
Horizontal field of view
Vertical field of view
Advanced optical verification
Explosive atmosphere protection
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en
Description
B
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