In the CONTEXT of purge and pressurization systems for hazardous environments, the term “pressurization” refers to the process of bringing the same (as the purging air) clean instrument air or inert gas under pressure into the ELECTRICAL enclosure. The pressure is enough to CREATE a small POSITIVE differential pressure between the INSIDE of the enclosure and the ambient pressure outside the enclosure. The positive pressure ensures there is no ingress of hazardous material into the enclosure.

In the context of purge and pressurization systems for hazardous environments, the term “pressurization” refers to the process of bringing the same (as the purging air) clean instrument air or inert gas under pressure into the electrical enclosure. The pressure is enough to create a small positive differential pressure between the inside of the enclosure and the ambient pressure outside the enclosure. The positive pressure ensures there is no ingress of hazardous material into the enclosure.