Exact level measurement in heavily foaming media is no problem for SICK Automation’s new LFP Inox level sensor. The measuring principle of guided radar provides reliability and the hygiene design opens up a variety of possible uses in the food, beverage and pharmaceutical industries.
Particularly in dairies and breweries, it is necessary to expect heavy foaming all the way to the generation of wet, compact foams in the course of conveying, mixing and bottling milk or beer respectively. In this scenario, many level measurement systems reach their limit: Capacitive systems and conductivity probes do not submit reliable measured values due to product build-up and in general, float switches do not meet hygienic requirements for cleaning and sterilisation. The LFP Inox is the ideal solution for such applications.
Reliable foam suppression and certified hygienic design
Thanks to time domain reflectometry i.e. of guided radar, the LFP Inox is capable of differentiating reliably between liquid media and foams or deposits. Based on the maximum measuring range of 4000 mm, the CIP and SIP-resistant measurement probe can be cut as desired all the way down to 200 mm. It is made of FDA-compliant, food grade stainless steel that features a surface roughness of 0,8 μm. This facilitates residue-free cleaning and minimises the possibility of build-up, thus preventing breeding grounds for bacteria and other micro-organisms. Just the same applies to the changeable, hygienic process connections. The level sensor has been certified by the EHEDG (European Hygienic Engineering & Design Group) and also meets the 3-A hygiene certificate of the US food industry.
Permits flexible automation
The LFP Inox combines continuous level measurement and point level detection. The display, a switchable 4-20 mA and 0-10 V analogue output, IO-Link for individual parameterisation, diagnosis options and two transistor switching outputs, are accommodated in the compact sensor housing that meets the requirements of both the IP67 and IP69K enclosure ratings. Simple commissioning, maintenance-free operation and a high degree of independence regarding the properties of the medium to be measured, result in substantial savings over time. The LFP Inox is ideal for level measurement in filling plants, for monitoring levels in rinsers and CIP facilities and in cosmetic or pharmaceutical mixers.
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