The use of simplified pressurized enclosures allows the operation of 'non explosion protected' devices in hazardous areas inside zone 2.

The protection type 'pressurization' is based on the principle of maintaining a constant pressure using air or a protective gas to prevent an explosive mixture forming near the apparatus inside the pressurized enclosure.

Generally before start-up, the pressurized enclosure must be purged with air or protective gas to remove any explosive mixture that may be inside the enclosure. This automatic procedure is called purging process.

Properties

• Very compact system, mounting direct in hazardous area (Zone 2) or inside EEx nP- housing
• ATEX- Certification according to EN 50021 (nP), IEC 60079 – 2 (pz),
• TÜV 03 ATEX 2095X
• Programmable automatic pre- purging, output for solenoid valve
• Two free programmable output relay contacts (250V / 5A)
• Proportional working pressure measurement, high overpressure safety (no membrane switch)
• Visualization of status, pressure, remaining purge time and failure report via integrated Display
• Available languages: German, English, French, Spanish, Dutch
• Solenoid valve fuse easy exchangeable in-side of FS840