Explosive Environment Detector (Ex)

 Protecting explosion-hazard areas

To reliably protect people and assets in explosion-hazard areas we offer special solutions that are required for fast and reliable fire detection. Galvanically isolated Line Adapter (Ex) and the unique ASAtechnology from Siemens make the addressable multi-sensor detectors a technically superior product and the ideal choice for gas zones 0, 1 and 2. Excellent detection reliability and immunity to deceptive phenomena prevent unnecessary downtime and costs caused by false alarms.

The Ex-solution from Siemens is the first on the market that covers all Ex-zones for gas ‒ including zone 0, which has a constant explosive atmosphere. The manual call point can additionally be used in Ex zones for dust (20, 21 and 22).

  • Zone 0:An area in which an explosive mixture of air and flammable gases, vapors or mists is continuously or frequently present or present for long periods.
  • Zone 1:An area in which an explosive mixture of air and flammable gases, vapors or mists is likely to occur in normal operation.
  • Zone 2: An area in which an explosive mixture of air and flammable gases, vapors and mists is not likely to occur in normal operation and if it occurs it will exist.
  • Zone 20: An area in which an explosive mixture of air and combustible dust in the form of a cloud is continuously or frequently present or present for long periods.
  • Zone 21: An area in which an explosive mixture of air and combustible dust in the form of a cloud is likely to occur in normal operation
  • Zone 22:An area in which an explosive mixture of air and combustible dust in the form of a cloud is not likely to occur in normal operation and if it occurs it will exist only for a short time.