Optical Level Switch TOS

The optical sensor is located in a metallic body which includes a polysulfone prism inside of which there is inserted an infrared transceiver. As soon as the sensor is immersed in the liquid, the refraction index of the prism changes and a large part of the infrared beam is dispersed in the liquid, causing the output to change state.


  • No moving parts
  • Hermetic construction, sealed
  • Minimum degree of protection IP65

Application Water treatment, Machine tools, Hydraulics, Food & Beverages, Chemical & Pharmaceutical
Process attachment G 3/8
Product type Level measurement
Technology Infrared transceiver
Measuring range Working Pressure: 260 bar max (25°C) or 200 bar max (85°C)
Connection M12x1 - IP67, DIN 43650 A - IP65
Output PNP or NPN
Media temperature -40...+85°C
Temperature range -30...+55°C

Maximilian Grudin

Product division:
Pressure- and temperature sensors

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