WIKA OLS-C20 Optoelectronic level switch
Optoelectronic level switch, compact design, high-pressure version
Wika modello OLS-C20
Description
The model OLS-C20 optoelectronic level switch is used for the detection of limit levels in liquids. This is widely
independent of physical characteristics such as refractive index, colour, density, dielectric constant and conductivity.
Measurement is also done in small volumes.
The switch consists of an infrared LED and a phototransistor.
The light of the LED is directed into a prism. So long as the sensor tip of the prism is in the gaseous phase, the light is
reflected within the prism to the receiver. When the liquid in the vessel rises and wets approximately 2/3 of the glass tip,
the infrared light beam into the liquid is interrupted and only a small portion reaches the receptor.
The O. C. pnp transistor output may be connected directly to the input of a control system or energise an external relay.
The output is short-circuit-proof and also current, voltage and power limited.
The switching status can be read directly on the sensor (green LED).
Tecnical description
Applications:
- Level detection for liquid media
- Level control and monitoring of distinct filling levels
- Machine building
- Wastewater and environmental engineering
Special features:
- Compact design, no moving components
- Temperature ranges from -30 … +135 °C
- Versions for pressure ranges from vacuum to 50 bar
- Mounting position as required
- Visual inspection of the switching status