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Highly reliable and accurate thanks to Intelligent Signal Processing (ISP)
Earliest detection of lightest smoke with dual-optical versions (Dual-Ray technology)
Monitors environment for electromagnetic inuence for fast root-cause analysis
Automatic and manual address setting
Sensor technology and signal processing
The individual sensors can be configured in the FSP-5000-RPS programming software.
All sensor signals are analysed continuously by the internal evaluation electronics (ISP – Intelligent Signal
Processing) and are linked with each other via an inbuilt microprocessor. The link between the sensors means that
the combined detectors can also be used where light smoke, steam or dust must be expected during the course of
normal operation.
Only if the signal combination corresponds to the characteristics of the application site, selected during the
programming, the alarm is triggered automatically. This results in less false alarms.
In addition, the time of the sensor signals on re and fault detection is analysed, which leads to high detection
reliability for each individual sensor.
In the case of the optical and chemical sensor, the response threshold (drift compensation) is actively adjusted.
Manual or time-controlled switch-o of individual sensors is possible for adjustment to extreme interference
Optical sensor (smoke sensor)
The optical sensor uses the scattered-light method. An LED transmits light to the measuring chamber, where it is
absorbed by the labyrinth structure. In the event of a re, smoke enters the measuring chamber and the smoke
particles scatter the light from the LED. The amount of light hitting the photo diode is converted into a proportional
electrical signal.
The dual-optical versions use two optical sensors with dierent wavelengths. The Dual-Ray technology works with
an infrared and a blue LED so that lightest smoke is detected fast and reliably (TF1 and TF9 detection).
Thermal sensor (temperature sensor)
A thermistor in a resistance network is used as a thermal sensor from which an analog-digital converter measures
the temperature-dependent voltage at regular intervals.
Depending on the specied detector class, the temperature sensor triggers the alarm status when the maximum
temperature of 54 °C or 69 °C is exceeded

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