Siemens FDOOTC241 - Parameter Sets: Sensor Mode 0 Neural Fire Detector; Description

Planning
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Building Technologies A6V10209291_f_en_--
Fire Safety & Security Products 05.02.2010
Risk of fire
In production facilities where highly combustible materials such as flammable
liquids, cotton, paper etc. are processed and where electrical machines are
operated, the fire risk is very high. Minor overheating or sparks may cause a fire. In
a storehouse where steel is stored and where no electrical installation is provided
with the exception of lighting, the fire risk is very low.
Critical fire size
When a waste paper basket in a metal-processing facility catches fire, the
consequential damage is usually rather low. Here we are talking about a critical,
medium fire size that can still be tolerated. The situation is completely different in
pharmaceutical production facilities where even the lowest smoke concentration
may impair the process and where combustible materials are processed. Even the
smallest fire must be detected immediately. In this case, we speak of a small
admissible critical fire size.
4.1.2 Parameter sets: Sensor mode 0 'neural fire detector'
4.1.2.1 Description
(Parameter set numbers in brackets)
High Suppression (8):
To cover applications with permanent, optical deceptive phenomena (dry ice in
discotheques, welding), this parameter set only reacts when a temperature rise of
approx. 8 K is detected in addition to the optical signal. Due to the combination of
optical and thermal signals, it is better suited than a pure heat detector. This
parameter set is also suited for applications that can otherwise only be covered
with special detectors.
Suppression (5):
Thanks to its very robust behavior, the 'Suppression (5)' parameter set is
particularly suited for rooms where deceptive phenomena such as vapor, very
dense cigarette smoke or exhaust fumes can be expected. It reacts in a very robust
way to the deceptive phenomenon vapor.
Suppression CO (12):
Thanks to its very robust behavior, this parameter set is particularly suited for
rooms where deceptive phenomena such as vapor, cigarette smoke or exhaust
fumes can be expected. It reacts in a very robust way to the deceptive
phenomenon vapor. In the event of smoldering fires or fires in rooms where
cleaning products are stored, the parameter set reacts quicker than the
'Suppression (5)' parameter set as it takes the CO concentration into account.