The multi zone control unit CIE (control and indication equipment) has both, control and verification functions. The whole electronic system is integrated on a modern and reliable board with redundant circuitry. Power supply, emergency battery and connection technology are accommodated within a cabinet.
Any signals emerging from the explosion pressure, spark, flame or temperature sensors are recorded, tested and evaluated by the control unit. Depending on the structure of the explosion protection system, the protection measures are activated selectively. The monitoring and activation lines are continuously checked for wire breakage, earth fault and short circuit. Additionally, an automatic self-test system ensures that all important functions of the control unit are verified electronically. In case of a breakdown of the main power supply, the battery-assisted emergency power supply ensures an uninterrupted operation.