FIBRE OPTIC DETECTION
Fibre optic detection systems can detect a single zone in excess 6km and up to 60km. Point ID, the ability to identify the location of the event, can target a specific event to within +/-50 metres.
Fibre optic cables can be installed as a buried sensor system or a fence mounted system. Vibration within the fibre causes a distortion in the light signals, which is detected and analysed.
The systems utilise standard fibre optic cable which means that spare cores could be used for other systems. However, the down side to this is the vulnerability of the fibre. It is not recommended to mount communications cables on a fence or buried just below the surface of the ground. An attack that damages the cable would trigger an alarm but it could also cut of communications to other systems.
An advantage of fibre optic detection is its immunity to electromagnetic and radio frequency interference. Fibre optic cable is also completely immune to lightning strikes and naturally intrinsically safe.