Displacers are commonly used for level and interface applications. The buoyancy of the displacer in the fluid is the primary measurement principle.  Density of the fluid is a key factor in sizing the displacer and in the stability of the application. Any deviation from the initial density will impact its measurement accuracy.  The Rosemount 3300 Guided Wave Radar technology has no moving parts allowing for reduced maintenance.  The measurement of the Guided wave radar is not density dependent making it a good choice where displacer applications are challenged.

For additional information on the Rosemount 3300 please contact your Spartan Controls representative.

Visit Emerson Process Management web site to find out more information on Rosemount radar level measurement capabilities.

Additional articles to review:

Guided Wave Radar Merit Energy

Guided Wave Radar Application Note

Replacing Displacers with Guided Wave Radar

Guided Wave Radar - Wave to the Future