Purge Panels

Purge panels are designed for explosion protection by removing flammable gas mixtures from enclosures through an initial purging proces. Once purged, they maintain internal pressure with compressed air or inert gas to prevent explosive atmospheres from entering. Suitable for non-hazardous equipment, these panels come in various sizes and have Ex-AC certification for IP65.

 

Description:

Purging and pressurizing systems is one of the most versatile explosion protection methods. These Systems are based on the principle that in Zone 1 or 2 the gas mixture in the ambient atmosphere, which may ignite under certain circumstances, is removed from the housing by an initial Purge process. After the purge phase, sufficient compressed air or inert gas is supplied to compensate for leaks from the enclosure. This permanent overpressure, achieved using compressed air or inert gas, prevents any potentially explosive atmosphere in the ambient air from entering the enclosure. During the rapid exchange purge phase, an internal pressure of approximately 3.5 – 12 mbar (1.3” to 5.0” Water Column) is achieved. During operation, this internal pressure reaches 0.6 – 3 mbar (0.3 to 1.2” Water Column). The pressurizing system is particularly suitable for installed equipment which is not approved for use in hazardous areas. Once installed in a purge panel, it can then be used directly in the hazardous area.
Purge Panels
Specification Details
Features
  • Purge Panel has pressure withstanding capacity as per design
  • HC accumulation is taken care
  • Moisture free purge is desired
  • Electrostatic discharge is one of the above major features
  • Various sizes for accommodating various types equipment
  • Purge Panel with Ex-AC certified for IP65
Advantages
  • Explosion-proof enclosures are well known for their size, weight, and price as a means of protection
  • Purge/pressurization can take in standard enclosures and make them safe for installation in hazardous areas as a means of protection, and, unlike explosion-proof, it does not allow for an explosion to occur
  • The disadvantage of purge/pressurized enclosures is their operation requires a constant air or another inert gas source. Also, for very small enclosures such as instrument housings, there is a cost advantage in using explosion-proof, but in any enclosures over 1 cubic foot, purge/pressurization will have the advantage
Specification As per Customer's Requirement

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