Back Purge Control Unit for Ex-Zone 1


  • For extractive gas analysis
  • For emission and process monitoring in Ex-area zone 1
  • For control of automatic back purge of explosion proof JCT gas sample probes series JES-301
  • For applications with high dust concentrations
  • For regular cleaning of probe filter, filter chamber and possible pre-filter


  • For in and outdoor mounting suitable
  • For direct connection to inert gas or pressure air network
  • No entry of purge gas into sample gas possible
  • Protection against unauthorised access
  • Fully programmed two stage back purge program (option PLC)
  • Save operation due to status message (option PLC)
  • Easy adjustment of the back purge cycles by connection of only one cable (option PLC)


  • In robust weatherproof stainless steel housing
  • For wall mounting
  • Lockable housing
  • Integrated pressure regulator for inert gas or compressed air
  • 2 explosion-proof solenoid valves (safety shut off valve and clocked back purge valvel)
  • Manual shut off ball valve in the inlet
  • External PLC (programmable logic controller) with adjustable interval for back purge cycles and status contact for mounting in explosion-free area as option
JES-301KE1  is listed within following categories:

Product Inquiry JES-301KE1