• European Union (ATEX)
  • IECEx


  • Gas - IIC
  • Dust - IIIC


  • Gas Area - Zone 1
  • Dust Area - Zone 21


  • Gas Temp. - T4 (135C)
  • Dust Temp. - T135C
  • Lower Ambient Temp - -20C
  • Higher Ambient Temp - Greater than +40C


  • Gas Concept - Ex e
  • Dust Concept - Ex ta / tb / tc


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Supplier Details

  • Address:

    Unit 2 The Summit, Sunbury-on-Thames, Middlesex TW16 5DB United Kingdom

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Expo Technologies SmartPurge II Purge & Pressurization Controller Unit

Purge Systems » Purge Systems

The SmartPurge II carries International Certification, certified to both IECEx and ATEX Standards. The robust 316L Stainless Steel construction makes the SmartPurge II resistant to offshore and corrosive environments. Conforming to IEC 61508 Safety Integrity Level (SIL) 2, the SmartPurge II has Universal Applications – a single model for both leakage compensation and continuous flow applications. Wide operating temperature range and universal power supply allows a large range of solutions to be provided by one model.

The SmartPurge II universal mounting options and compact size make the unit easy to

integrate into existing and custom sized enclosures The controller with its integral purge outlet can be mounted in any orientation on your enclosure.


  • Configurable inputs/outputs
  • Two selectable alarms
  • Auxiliary inputs for override keyswitch, door switch or intermediate pressure switch
  • Temperature range -20°C to +60°C (-4°F to 140°F)
  • Universal power supply 90-254 V AC or 11-28 V DC
  • High Purge air flow capacity
  • Leakage Compensation 110-540 Nl/min (3.9-19.1 cuft/min)
  • Continuous Flow 10-540 Nl/min (0.35-19.1 cuft/min)
  • Purges enclosures up to 5.3 m (187 cuft)

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