Ex p System

The new Ex p System x621 makes it even easier to upgrade an existing industrial control system for hazardous locations – with a fully automatic and reliable solution that can be easily mounted to existing enclosures.

The combination of an Ex p control unit, Ex p pressure monitors that simultaneously also function as overpressure valves, and Ex p purge valves with digital and proportional control is able to meet all requirements, from very small enclosures with a volume of 10 l to Ex p control cabinets with volumes of 4000 l. In this way, the Ex p controller makes control processes available for all control cabinet sizes and enables them to be adjusted easily to meet users' requirements. The use of a suitable number of a single Ex p pressure monitor variant reduces expenditure and work for both engineering and storage. The outstanding precision of the pressure sensors used also enables operation close to the pressure switch-off threshold, which keeps leakage to a minimum and enables extremely cost-effective continuous operation. The purge valve control, which is also integrated in the control unit, further simplifies the process in either digital or proportional mode.

  • One design for all Ex zones
  • Maximised plant availability thanks to improved airflow
  • Space-saving thanks to miniaturised design and ability to mount components externally
  • Wall thicknesses < 2 mm also possible thanks to minimised control cabinet pressurisation
  • Optimised maintenance access thanks to Ex p bypass circuitry
  • Flexible engineering thanks to modularity

Filter product lines

Select the product lines that are applicable to your intended use.

Certificates SAP
Min. ambient temperature
Max. ambient temperature
Product Description
Application range (zones)
Auxiliary power rated operating voltage
Ex p controller enable contact
Purging air nozzle
Ex p pressure reducer
Purge time range pressure regulation

1 Serie (16 Products)

Ex p system Series 8621, 7621

  • All-round Ex p system for Ex p cabinets from 10 litres to 4000 litres
  • Zones 1, 2, 21 & 22
  • Mounting on the roof or lateral enclosure wall
  • Ex p controller in DC 24 V or AC 90-253 V
  • Compact structure, simple mounting
  • Language-independent and display-supported adjustment of Ex p parameters

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