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Replace displacers with guided wave radar technology

Mechanical measuring points are affected by density and measurement changes, and cause inaccuracies

Mechanical measuring principles such as displacers are commonly used in level applications. Nevertheless, their accuracy is highly affected by density and temperature changes which causes inaccurate measurement readings. We understand your applications and have the know-how to help you overcome these challenges with the use of modern technology.

Displacers and their limitations

  • Displacers are affected by density and temperature variations

  • Mechanical measuring points are prone to build-up which causes inaccurate or no (jamming/blocking) measurement

  • Maintenance costs are relativity high due to regular cleaning and dismantling

  • Proof testing can be difficult to determine reliability

  • Typically they offer no or limited diagnostics information

Guided wave radar, an alternative to displacers

  • Availability: planned shutdowns less maintenance required , unplanned shut downs (reduce time due to data management concept/ HistoROM & display), NE107 diagnostics

  • Safety: functional safety, API 2350: statement related to mechanical gauges, reliability of the measurement (no influence of density changes, software algorithms)

  • Efficiency: Time savings = cost savings, complete by­pass solution (E+H takes over responsibility), life cycle costs displacer vs GWR Multimedia

Benefits from our Levelflex

  • Reliable measuring for changing medias

  • Higher availability

  • Integrated data memory

  • Factory pre-calibrated

  • Intuitive, menu-guided operating concept in national languages

  • Simple integration into control or asset management systems

  • Exact instrument and process diagnosis to assist fast decisions

  • Lower maintenance

Distillation column - measurement points

Success stories


Endress+Hauser Ltd
Floats Road M23 9NF Manchester United Kingdom
Tel.: +44 161 286 5000
Fax: +44 161 998 1841
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