12/05/2011 • Automation • IT and automation • Metrology • Packing and marking • Process automation / MSR technology • Sensor Technology

Level sensor for continuous level measurement with level detection in a single device / level measurement with guided microwave

The new LFP cubic: level measurement with guided microwave. Top measuring results for most diverse media
With the new LFP cubic, SICK presents a level sensor that provides maximum amount of flexibility and measuring accuracy. Thanks to IO Link, it also opens up excellent possibilities for integration in the type of automation common in machine and plant engineering.

The LFP cubic combines continuous level measurement with level detection in a single de-vice. The level sensor, nearly wear- and maintenance-free, is used in metal containers and tanks in the water industry, in machine building, on machine tools, in plant engineering, and in building services engineering.

Adjusts to the measuring task
The LFP cubic is designed for a universal range of possible uses. The measuring principle of the “guided microwave” makes the level sensor independent of influences related to installa-tion, the container, and the medium. As a result, the sensor is suited for nearly any water- and oil-based fluids, e.g. coolants, grinding and hydraulic oils or blends containing cleansing, degreasing, and cleaning agents. Graduated probe lengths from 200 mm to 2000 mm are available, allowing an individual layout of the sensor. In addition, the stainless steel measuring probe is screwed together – i.e. it can be disassembled, shortened, or replaced. The LFP is also flexible with respect to process conditions: it is suitable for temperatures up to 100 °C (212 °F) and process pressures up to 10 bar (1,000 kPa). Sensor setting takes place using a display-supported, menu-guided operation that follows suggestions by the VDMA (German Engineering Federation). Alternatively, the two switching points as well as the analog-output measuring range can be parameterized by IO Link via the machine control, and it can also be monitored and changed from there.

Very precise – even in case of foam
The LFP cubic ranks among the most accurate measuring systems of its kind – even in ap-plications associated with foam. In contrast to many other sensor-based active principles, the measuring results are influenced only insignificantly by the properties of the medium measured, e.g. density or conductivity. In terms of operations, this means that the level sen-sor does not have to be re-configured when physical properties of the fluids change. Since at any given probe length the LFP cubic features only very small inactive areas, it offers a max-imum detection range in any variant. Measuring accuracy is at +-5 mm – a value otherwise achieved only by considerably more expensive level measurement systems.

The LFP cubic makes the advantage offered by the high-tech sensor principle of the guided microwave usable for standard applications in factory automation – and it does so at a superb price-performance ratio.

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SICK AG - Düsseldorf

Willstätterstraße 30
40549 Düsseldorf

Phone: +49 (0) 211/ 5301- 0
Fax: +49 (0) 211/ 5301- 100