EXtract 850M

for sensors with length 120mm

EXtract 850M is a simple, manually operated retractable probe housing made of stainless steel or plastic. It is suitable for installing Ø12-120mm sensors on tanks and pipes. The integrated locking system holds the inserted sensor in position while allowing easy alignment of the protection cage. This protects the inserted sensor against mechanical influences.


Your advantages

  • Optionally with or without cable protection
  • Can be operated by hand up to 2 bar process pressure
  • Protection cage can be adjusted when unlocked
  • Locking of the immersion tube in the end positions “Measurement” or “Service”
  • 76 mm immersion depth (with protection cage extended)
  • Further process connections upon request


Request quote


Process pressure: 0...6 bar
Process temperature: 10...80 °C
Ambient temperature: -10...70 °C
Sensors: 120 mm Ø 12 PG13.5
Material: Stainless steel 1.4404 (316L) < Ra 0.78µm; PP
Sealings: EPDM; FPM (Viton)
Process connections: Thread NPT 1"; Thread G 1"; Ingold DN25 G 1¼"
Drive unit: manually operated; axially movable
Feedback: without
Length of protection cage: 36 mm



  • For all kind of Ø12/120mm sensors with thread PG13.5 (pH-glass- and ISFET sensors, conductivity- or temperature sensors, turbidity and other optical sensors)
  • Food and beverage
  • Water and wastewater
  • Enables sensor dismounting while the process is running

Our Probe Housings

Immersion fittings
EXdip 910EXdip 920
Control units for pneumatic retractable housings
EXmatic 470EXmatic 471
Control units - accessories
EXconnect 170
Flow-through fittings
EXflow 710EXflow 720