Aarhus/Staffanstorp/Swindon, August 27, 2007. Within the product segment Process Instrumentation, Baumer offers a robust level sensor resistant to contamination that fully meets the high demands of level monitoring by using the optical principle.
The sensor head made of borosilicate glass and a variety of field mountable casings, for example of stainless steel, make it extremely resistant to a great number of aggressive liquids. Integrated electronic devices that require no special settings make the sensor easy to operate. All parts exposed to surrounding media withstand a compression load of up to 40 bar.
Thanks to the optical principle, fluids can be detected easily, wear-free and continuous without requiring an electrical connection or a mechanical movement between fluid and sensor. Depending on whether the sensor tip is surrounded by liquid or air, the limit angle for the total reflectance of the light changes. If the sensor tip is surrounded by liquid, the light beam is diverted into the fluid and the sensor exit changes its switching status.
The liquid medium can either be conductive, non-conducting, cloudy or clear.
For hazardous locations or applications with cramped space conditions, optical fibre versions are available. A special sensor head preventing drop formation makes these versions highly chemical resistant and applicable for temperatures of up to 105° Celsius.
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