# ATEX #standard #hazardous-area #certification ATEX (Atmosphères Explosibles) refers to European Union directives for equipment and protective systems intended for use in potentially explosive atmospheres. ## Directives - **ATEX 114 (2014/34/EU)**: Equipment directive for manufacturers - **ATEX 153 (1999/92/EC)**: Workplace directive for employers ## Purpose - Ensure equipment safety in explosive atmospheres - Protect workers from explosion risks - Harmonize European standards - Define equipment categories and zones ## Equipment Marking Equipment for use in explosive atmospheres must be marked with: - CE marking - Ex symbol - Equipment group (I for mining, II for surface) - Equipment category - Explosion protection type - Temperature class - Gas group ## Zone Classification - Zone 0: Continuous explosive atmosphere - Zone 1: Likely explosive atmosphere - Zone 2: Unlikely explosive atmosphere ## Application to F&G - Gas detection transmitters must be ATEX certified - Ensures safe operation in hazardous areas - Required for European installations - Critical for compliance ## Related Concepts - [[Temperature Classes]] - [[Hazardous Area Classification]]