Smoke detection for early fire detection in railroad tunnels

         Fire in a railway tunnel can have catastrophic consequences – that's why every minute counts. The VISIC50SF tunnel sensor detects fire very quickly and reliably based on the particle concentration in the tunnel air. Compared to temperature measurements, the advantage of this method is a fast response time and almost complete prevention of false alarms.

  • Visibility (K value) measured according to the scattered light measurement principle
  • Highly available – no moving parts
  • Quick and reliable smoke detection
  • Software developed in accordance with EN 61508 (SIL1)
  • Low faulty alarm rate
  • IP 6K9K enclosure rating thanks to a rugged stainless-steel housing
  • Fog evaporation through integrated heating element (optional)


Making traffic routes more efficient, safer, and environmentally friendly