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77 BHH-520/N Interactive Multi detector w/ SV

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Interactive MultiSensor detector head with SelfVerify, environmentally protected. Ex ic version of BHH-520.
BH-520/N is designed for use with Autronica’s interactive fire detection systems. A rise in temperature will change the detection platform by increasing the smoke sensitivity in order to improve the detection of combustion gases from flaming fires producing barely a minimum of visible smoke particles. The MultiSensor principle combined with advanced signal processing in the detector ensures an early response to any type of fire development. The detector is for use in hazardous area zone 2. It must be connected to a loop driver approved for zone 2. Additional coating of PCB combined with the adaptivity and the all round smoke sensitivity of BH-520/N makes this detector suitable for industrial, maritime and offshore applications where there is a potential flaming or/and smouldering fire hazard.