Structure and function
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Building Technologies A6V10209291_f_en_--
Fire Safety & Security Products 05.02.2010
The combination of optical, thermal and CO sensor signals optimizes detection
reliability. This has the following advantages:
Early detection of all types of fire, whether they generate light or dark smoke, or
no smoke at all.
The neural fire detector FDOOTC241 can be operated at a lower sensitivity
level and thus achieves a higher immunity against false alarms which may
otherwise be caused by cold aerosols (e.g. by smoking, electrical welding,
etc.). In the case of an open fire, the smoke sensitivity is heightened by the
temperature increase, which means that a detection reliability level that is
comparable to that of the wide-spectrum smoke detector can be achieved.
You can set the following response behaviors on the neural fire detector
FDOOTC241:
Combined optical and thermal
Combined optical, thermal and CO
Optical smoke detector alone
Heat detector alone
The response behavior is determined by selecting one of the following sensor
modes:
Sensor mode 0: Application as neural fire detector
Sensor mode 1: Application as heat detector
Sensor mode 2: Application as smoke detector
The sensor mode is configured with the configuration tool or on the control panel's
person machine interface.
NOTICE
Functionality of sensor modes
Risk of alarm activation due to deceptive phenomena
Depending on the configuration software used for the fire control panel,
sensor modes 1 and 2 may not be available.
If the deceptive phenomena occurring (e.g. artificial mist) mean that only one
heat detector can be operated, the FDOOTC241 cannot be used in such
environments.
Combined optical-thermal or optical-thermal CO mode is selected by choosing the
parameter set in sensor mode 0.
The parameter sets of the heat detector or optical detector can be selected in
sensor mode 1 or 2. The neural fire detector FDOOTC241 then acts in a similar
way to heat detector FDT241 or smoke detector FDO241.
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