General Information; Design And Function - WIKA OLS-C01 Mode D'emploi

1. General information / 2. Design and function

1. General information

The level switches described in the operating instructions have been designed and
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EN manufactured using state-of-the-art technology. All components are subject to stringent
quality and environmental criteria during production. Our management systems are
certified to ISO 9001 and ISO 14001.
These operating instructions contain important information on handling the instrument.
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Working safely requires that all safety instructions and work instructions are observed.
Observe the relevant local accident prevention regulations and general safety
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regulations for the instrument's range of use.
The operating instructions are part of the product and must be kept in the immediate
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vicinity of the instrument and readily accessible to skilled personnel at any time. Pass the
operating instructions onto the next user or owner of the instrument.
Skilled personnel must have carefully read and understood the operating instructions
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prior to beginning any work.
The general terms and conditions contained in the sales documentation shall apply.
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Subject to technical modifications.
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Further information:
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- Internet address:
- Relevant data sheet:

2. Design and function

2.1 Description
This instrument is used for the detection of limit levels in liquids.
The measuring principle is independent of refractive index,
density, conductivity and dielectric constant. The switches consist
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 the glass
tip, the infrared lightbeam into the liquid is interrupted and only a
small portion reaches the receiver.
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www.wika.de / www.wika.com
LM 31.31 (OLS-C01),
LM 31.32 (OLS-C02),
LM 31.33 (OLS-C05),
LM 31.34 (OLS-C04),
LM 31.05 (OLS-F1),
LM 31.06 (OLS-5200)
WIKA operating instructions models OLS-C01 ... OLS-C05, OLS-F1, OLS-5200
Operating principle
Gas
Liquid