EXtract 825M

plastic for welding socket DN25

Extract 825M is a manually operated retractable probe housing to be attached on process tanks or tubing by welding sockets DN25. The drive unit inserts the sensor into the process medium and back into the cleaning chamber. When reaching the final position of the “measuring” or “service” position a pneumatic position signal responds automatically. Cleaning, rinsing and calibration of the sensor is possible while the process is running. An intergrated PTFE scraper allows the use also in rougher processes.


Your advantages

  • Robust design, integrated PTFE scraper
  • Usable for DN25 welding socket
  • Extension of sensor-lifetime and reducing of maintenance efforts
  • Automatic safety lock while sensor is removed
  • Usable in ATEX-areas
  • Immersion length 70mm
  • Up to 10 bar and 140 °C
  • PP / PVDF or PEEK
  • Drive unit free of maintenance


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Process pressure: 0…10 bar
Process temperature: -10…140 °C
Ambient temperature: -10…70 °C
Immersion length: 70 mm
O-ring position: 25 mm
Sensors: 225 mm Ø12 PG13.5
Materials: PP, PVDF, PEEK
Sealings: EPDM, FPM (Viton), FFKM (Kalrez)
Process connection: G1 1/4" (DN25)
Cleaning ports: G1/8", G1/4", FNPT1/4"
Position indicators: optional electrical NAMUR switches



  • For all kind of Ø12-225mm sensors or Ø12-280mm liquid filled sensors with thread PG13.5 (pH-glass- and ISFET sensors, conductivity- or temperature sensors, turbidity and other optical sensors)
  • Chemicals
  • Water treatment
  • Rough processes


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Retractable probe housing EXtract - easy and effective

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