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Optoelectronic OEM Level Switch - High Temperature

Model OLS-C05

Compact design, high-temperature version.

Selected documents


  • Machine tools
  • Hydraulics
  • Plant construction and machine building
  • Water technology
  • For liquids, such as oils, water, distilled water, aqueous media

Special features

  • Use at temperatures of up to +150 °C
  • Mounting position as required
  • Accuracy ±0.5 mm
  • Visual indication of the switching status
  • Choice of electrical connections: PUR cable, circular connector M12 or angular connector EN 175301-803 A


The model OLS-C05 optoelectronic OEM level switch is used for monitoring the level of liquids. The optoelectronic sensor consists of an infrared LED and a light receptor.

The light from the LED is directed into a prism which forms the tip of the sensor. So long as the tip is not immersed in liquid, the light is reflected within the prism to the receptor.

When the liquid rises within the vessel and surrounds the tip, the light beam is interrupted by the liquid, so that the reactor is no longer or only weakly reached by the light and reacts to this change by triggering a switching operation.

The switching status can be read directly on the sensor (red LED).

The model OLS-C05 level switch is designed for use with liquids at high temperatures of up to +150 °C.

Data Sheet

OLS-C05 Data sheet


OLS Operating Instructions