Latest option for usage & safe operating of automation & control system in Hazardous and Hostile Atmosphere as per IEC 60079-2 & NFPA 496
Fluids flow from high pressure to low pressure hence, maintain positive pressure inside the enclosure which restricts or prevents the entry of outside gases / fluids inside the panel.
| Selection Criteria | Internal Components | Type of Purging | MOC |
| Zone 1, Gas Group IIA,IIB | Passive | X/Y/Z | MS / SS |
| Zone 1, Gas Group IIA,IIB,IIC | Passive + Switching | X | MS / SS |
| Zone 2, Gas Group IIA,IIB | Passive | X/Y/Z | MS / SS |
| Zone 2, Gas Group IIA,IIB,IIC | Passive + Switching | X | MS / SS |
| Corrosive | Passive | X/Y/Z | SS 304 / 316 |
| Corrosive | Passive + Switching | X | SS 304 / 316 |
| Corrosive + Hazardous | Passive | X/Y/Z | SS 304 / 316 |
| Corrosive + Hazardous | Passive + Switching | X | SS 304 / 316 |
