Turck's rugged LUS211 ultrasonic sensors measure levels in small to medium-sized tanks at process pressures up to 5 bar

Ultrasonic Level Sensors for Small to Medium-Sized Tanks

Turck has rounded off its fluid sensor platform of pressure, flow and temperature sensors with robust ultrasonic sensors for level measurement

For level measurement in the range up to 40 or 130 cm, the LS+ has been developed on the basis of the Fluid 2.0 platform. The new LUS211 ultrasonic sensors can be operated at the process connection at pressures between 0.5 and 5 bar. They are thus the fourth sensor category of this robust Turck platform after the PS+ pressure sensors, FS+ flow sensors as well as the TS+ temperature sensors, which all offer a uniform look and feel.

Your Benefits

  • Cost-effective level detection for smaller containers
  • Fast commissioning via Fluid 2.0 backend
  • Maximum plant availability through easy condition monitoring

Flexible mounting thanks to rotatable sensor head  

Users benefit from a seamless concept for easier commissioning, flexible installation options with a rotatable sensor head, as well as the touch display and translucent front cap that does not require any protruding operating elements. Like all sensors of the Fluid 2.0 portfolio, the high IP67/69K protection rating also enables the LUS211 devices to be used reliably in adverse conditions. The continuous signal strength evaluation and the recessed and thus protected sonic transducers of the level sensors furthermore ensure increased system availability. An air cushion prevents the medium from contacting the sonic transducer in the event of overfilling.

IO-Link for direct output of level or volume values 

The LUS211 series is active with the commonly available G ¾ and NPT ¾ process connections for a 40 and 130 cm range, either with two switching outputs or with one switching and one analog output. Thanks to their additional IO-Link interface and intelligent decentralized signal preprocessing, all variants are also suitable as smart data suppliers for IIoT. The sensors can also be parameterized with the existing container geometry data via IO-Link, so that this can directly output distance, level or volume as absolute values or as a percentage.


  • Machine and plant construction
  • Automotive industry
  • Food and pharmaceutical industry (not medium-contacting)


  • IO-Link for output of additional condition monitoring information
  • Output of distance, level or volume values in absolute or percentage terms 
  • Uniform operating logic across the entire Fluid 2.0 family
  • Measuring range up to 40 cm or up to 130 cm


At a Glance: Fluid Sensors from a Single Source

Probably the best fluid sensor family for pressure, temperature, flow and level

Fluid Series: TS+ Temperature Sensors

More about robust temperature sensors with IO-Link which offer smart functions for easy commissioning and predictive maintenance concepts

Fluid Series: LRS Radar Sensors

More about FMCW Radar sensors for level measurement

Fluid Series: PS+ Pressure Sensors

More about robust pressure sensors for high demands on flexibility, reliability and intelligent communication

Fluid Series: FS+ Flow Sensors

More about IO-Link flow sensors with Quick-Teach and Delta-Flow monitoring


All Details about LS+ Ultrasonic Level Sensors

Approvals, data sheets, technical specifications, instructions, certificates, CAD data and more

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