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GEMU 1231 Electrical Position Indicator ATEX


The GEMU 1231 electrical position indicator is suitable for linear valves with actuator strokes up to 20 mm (actuating travel). It has a corrosion resistant plastic housing and one or two inductive proximity switches acc. to NAMUR EN 50227. Switching rod and actuating spindle have a positive connection without axial play.

The electrical connection is via cable gland.


  • ATEX-marking:
  • II 2G EEx ia IIC/IIB T6
  • II 2D T 80°C IP 65
  • -20°C Ta +60°C
  • Both proximity switches can be continuously and precisely adjusted, independently of each other, via threaded spindles
  • Device can be rotated through 360°
  • Customer-specified connectors available as an option


  • Simple mounting and retrofitting to GEMU linear actuators
  • Mounting to other valve makes possible
  • Compact design in a stable housing
  • The switches are not subject to wear, contactless detection
  • Protection class IP 65 to EN 60529