Technical information

If environmental conditions rule out the use of
smoke detectors, then a heat detector of the type
MD501Ex/MD601Ex/MD611Ex Range may
provide an acceptable, though less sensitive,
alternative. For general use, and particularly
where the ambient temperature may be low, a
'Rate-of-Rise' heat sensor is to be preferred. This
type of sensor reacts to abnormally high rates of
change of temperature and provides the fastest
response over a wide range of ambient
temperatures. A fixed temperature limit is also
incorporated in these detectors.
In many environments, e.g. kitchens and boiler
rooms, sudden, large changes in temperature are
considered 'normal'. Rate-of-rise detectors are
generally not suitable in these cases and fixed
temperature [static] types should be used.
Product Codes
516.033.002 (Vol 01A-03-D6)
MD501Ex Analogue Addressable Heat detector
516.052.051.Y (Vol 01B-04-D11)
MD601EX Conventional Rate of Rise Heat
Detector
516.052.041.Y (Vol 01B-04-D11)
MD611EX Conventional Fixed Temperature Heat
Detector
Heat Detectors
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Flame detectors, unlike smoke and heat
detectors, do not rely on convection to transport
the fire products to the detector nor do they rely
on a ceiling to trap the products. They can,
therefore, be used to protect large open areas
without sacrificing speed of response to flaming
fires. In order to ensure full coverage, however,
flame detectors do require direct line of sight to
all parts of the protected area.
Infra-red flame detectors such as the MS302Ex
and MS502Ex are designed to respond rapidly to
fires which involve clean-burning fuels such as
alcohol or methane, i.e. fires which would not be
detected by smoke detectors. The MS302Ex and
MS502Ex Flame Sensor, by virtue of its operating
wavelength and flicker discrimination, are
insensitive to normal environmental influences.
For outdoor use however, or in the presence of
very strong infra-red sources, a solar-blind
detector [e.g. the type S200 Plus] should be
used. The MS302Ex and MS502Ex Flame
detectors should, normally, only be used inside
buildings to supplement heat and smoke
detectors.
Product Codes
516.022.001 (Vol01A-02-D6)
MS302Ex Infra-red flame detector
(See S100 Flame detector test equipment)
516.032.001 (Vol01A-03-D5)
MS502Ex Addressable Infra-red flame detector
(See S100 Flame detector test equipment)
Flame Detectors
The photoelectric scatter type of detector
[MR501Ex] will respond quickly to large particle
smoke and possibly ignore the small particle
smoke.
Product Code
516.031.002 (Vol01A-03-D4)
MR501Ex Analogue Addressable Optical Smoke
Detector
Optical Smoke Detector
The CO Fire detector is a unique general
purpose fire detector which provides very early
warning of slow smouldering fires. Ideal for
sleeping risks, the CO fire detector is also well
suited to many applications where heat detection
is insufficient but smoke detection causes false
alarms.
As CO travels more freely than smoke, the
positioning of CO fire detectors is more flexible.
This feature is particularly useful in large complex
structures such as atria and warehouses, where
positioning of smoke detectors is difficult.
Product Code
516.058.002.Y (Vol 01B-04-D13)
MU601EX Conventional Carbon Monoxide
Detector
Carbon Monoxide Detector