Large area coverage up to 1500 m² per unit;
Range from 10 to 100m;
Up to ceiling heights of 25 m;
12 to 24 VDC;
Low current consumption;
Manual or automatic reset;
3 selectable alarm thresholds;
Self check and automatic signal compensation;
Automatic discrimination between fire and fault;
Retro operation through prisms;
Ground level electronics;
Easy wiring and alignment;
Conforms to BS5839 part 5;
Atex flame-proof version;
The transmitter transmits an invisible infrared light beam bundled through a lens to the receiver. At a maximum distance of 100 m the core diameter of the light beam is 3 m. The core diameter is the area of the conical IR beam in which orderly operation of the system is possible.
If smoke interrupts the beam, the signal in the receiver is attenuated depending on the thickness of the smoke. If an attenuation according to the set threshold lasts longer than 5 s, an alarm is triggered.
The alarm threshold can be set to 25% or 35% or 50% with the use of prisms.
Slow changes (e. g. contamination of the optical system) do not cause false alarms; instead, they are balanced out by an automatic gain control. Here the current state of the system is compared with a reference value and adjusted stepwise in case of deviations greater than 7%. By default, the comparison is done every 1.5 hours.
Sertifikatas CE (Fireray 2000)
CPD 0786-CPD-20196 (Fireray 2000)