The addressable linear smoke detector FDL242 is used to detect smoke. It is operated via an FDnet/C-NET detector line.
The scope of delivery includes the smoke detector, the base unit, and one single reflector.
The detector sends an infrared ray in the non-visible spectrum to the reflector, which sends the ray back to the detector. If smoke gets into the measuring section under supervision, the infrared ray is attenuated. If the signal reaches specific measured values, the detector transmits the corresponding danger level to the control panel.
Available parameter sets
No. | Designation | Alarm for n % attenuation | Response value % (EN 54-12) |
|---|---|---|---|
01 | Standard with interruption of beam = error | 58 | 35 (1.87 dB) |
02 | Standard with interruption of beam = alarm | 58 | 35 (1.87 dB) |
03 | Sensitive with interruption of beam = error | 50 | 29 (1.49 dB) |
04 | Sensitive with interruption of beam = alarm | 50 | 29 (1.49 dB) |
05 | Very sensitive with interruption of beam = error | 44 | 25 (1.25 dB) |
06 | Very sensitive with interruption of beam = alarm | 44 | 25 (1.25 dB) |
All parameter sets are approved to EN 54-12.
'Response value %' = attenuation of the beam by passing once through the detection distance. For instance 35 % on the dB scale: -10×log(1-0.35)
The following is applicable for installations to VdS:
Do not use the linear smoke detector FDL242 in systems and components that are designed for controlling and triggering extinguishing systems.