Sick LFP INOX level sensor for foaming media

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Sick’s LFP INOX level sensor offers exact level measurement in media with strong foam development. The measuring principle of the guided microwave ensures high measuring accuracy, while the hygiene-compliant design makes it suitable for applications in the food and beverage industries.

The sensor can detect the difference between liquid media and foams or adhesions due to its time domain reflectometry (TDR) measuring principle (ie, a guided microwave).

The measuring probe is CIP and SIP resistant and can be shortened from the maximum measuring range of 4 to 200 mm. It is made from FDA-certified food-grade stainless steel and has a polished surface with Ra = 0.8 µm, which facilitates residue-free cleaning, minimises the adhesion of product residues and thus prevents the multiplication of bacteria and other microorganisms.

The changeable, hygienic process connections are made from the same material and meet the same hygiene standards. The level sensor has been certified by the EHEDG (European Hygienic Engineering & Design Group) and conforms to the 3-A sanitary standards of the US food industry.

The sensor combines continuous level measurement with the detection of limit levels. Display, switchable analog output 4-20 mA or 0-10 V, IO-Link for individual parameterisation, diagnosis and visualising options, and two binary outputs are integrated in a compact sensor housing which meets the requirements of both enclosure ratings IP67 and IP69K.

The cuttable probes and interchangeable process outputs make the sensor versatile in use. According to the company, it offers easy commissioning, maintenance-free operation, is influenced only insignificantly by the properties of the medium measured and does not require calibration.