In food, chemical, and industrial facilities, pumps, motors, and sensors may operate in areas with flammable vapors or dust. Correct ATEX or IECEx classification prevents ignition sources in hazardous zones. Understanding each marking element—group, category, protection type, gas group, and temperature class—is essential for compliance and plant safety.
Selecting the right explosion-protection type (Ex d, Ex e, Ex i, Ex t, etc.) ensures that equipment withstands or prevents ignition. For example, Ex d enclosures contain internal explosions, while Ex e designs enhance safety through insulation and spark prevention. The right combination depends on the zone, atmosphere, and process risk level.
Temperature class and gas group further define safe limits for operation. A T4 rating, for instance, ensures surface temperatures stay below 135 °C—suitable for most industrial gases. Correctly interpreting markings like II 2 G Ex d IIB T4 ensures that pumps and controls meet regulatory and safety requirements in hazardous zones.
By understanding ATEX and IECEx markings, engineers can confidently select compliant fluid handling equipment and maintain safe, efficient operation in classified process areas. Always verify documentation and certification from the manufacturer to meet site-specific safety regulations and standards.
