Avoidance of explosive atmosphere


If an explosive dust atmosphere exists in the raw gas compartment of the Herding® filter unit depending on the operating mode of the cleaning system, the Herding® Sinter-Plate Filter acts as a DustExZoneBarrier and, therefore, no explosive dust atmosphere exists on the clean gas side.


The units situated downstream from the Herding® filter unit need to be designed only for the simple safe zone and are not required to be configured with explosion protection features.


The effect of the Herding® sinter-plate filter as a DustExZoneBarrier is described in VDI 2263 Page 6 and 6.1.