Извещатели пожарной сигализации
Thermal sensors
The sensor triggers if the room temperature exceeds the permitted temperature
- Can be used in gassy, dusty and humid environments Interference resistance
- Помехоустойчивость
- Not reactive to combustion materials that do not emit heat
- The sensor is located on the ceiling; if there is no heat emission, the fire signal reaches the controller after a delay
Smoke detectors
The sensor detects smoke in the room
- Early fire detection
- Low price
- Low reliability, false alarms due to dust
- Spot detectors may not work for black smoke, e.g. when rubber is burning.
Flame sensors
Increased response to electromagnetic radiation from open fire, detection of ignition source by ultraviolet, infrared and electromagnetic bands
Used in industrial applications where temperature fluctuations and smoke are considered to be the norm
Combination
The most accurate, as they combine the functions of several types of sensors at once
The most accurate, as they combine the functions of several types of sensors at once
Launched by mechanical action
PRINCIPLE OF OPERATION
Fire detection
Transmit an alarm to the controller at the guard post
Light and sound alert to personnel in case of fire, fire alarm by sms/e-mail
Automatic unlocking of all entrances for free evacuation
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