Specialized protective systems have to be used in environments that contain gases or vapors, combustible dusts, or fibers to prevent these dangerous materials from catching fire or exploding. Purge and pressurization systems can be used in a variety of production processes and applications where hazardous gasses or dust are present.
Purge and pressurization systems effectively help to control the risk of explosions by segregating the electrical equipment inside of the enclosure from the hazardous atmosphere. This is done by pressurizing the enclosure with clean dry instrument air or inert gas so the hazardous gas or dust cannot penetrate the enclosure. Purge and pressurization systems are an economical alternative to heavy and expensive explosion proof enclosures.