Structure and function
Setup
3
27 | 108
Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
The combination of optical and thermal 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 can be operated at a lower sensitivity level and thus
achieves a higher immunity against false alarms which can 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.
Technical Ambient Supervision Message
'Technical Ambient Supervision Message' mode detects an increase in
temperature above a specified trigger threshold caused by hysteresis.
You can set the following parameters:
●
Temperature threshold value
●
Messaging when the temperature threshold value is exceeded or undershot
●
Hysteresis range
The 'Technical Ambient Supervision Message' is configured using the 'Cerberus-
Engineering-Tool' software.
3.2.2 Structure of OOHC740
The neural fire detector OOHC740 is a multi-criteria fire detector and has two
optical sensors, two thermal sensors, and one CO sensor.
Structure and function
Figure 9: Sensors of the OOHC740
1 Heat sensors
4 Forward scatterer
2 Receiver
5 Labyrinth
3 Backward scatterer
6 CO sensor
