Control and automation components which are not available in explosion protected versions can be used in hazardous areas by applying the types of explosion protection “flameproof” Ex d and “purge and pressurisation” Ex p. Both technologies allow the integration of standard industry components in accordingly certified enclosures; the explosion protection method is different, though. Ex p prevents the ignitable gas from entering the enclosure while Ex d contains a possible explosion inside the sturdy enclosure. Both types of explosion protection can be combined and allow, by addition of Ex e control elements, a tailor-made design of the solution for the specific application, be it chemical and pharmaceutical production plants or oil and gas processing.
Contact Frederik Langenhoven, Pepperl+Fuchs, Tel 087 985-0797, firstname.lastname@example.org
Source: EE plublishers