The post Selecting Best Solids Level Measurement Technology appeared first on the Emerson Process Experts blog.
This being Engineers Week, I wanted to celebrate all the engineers with a recap of a good technical note on solids level and volume measurement. The paper, Measuring Level and Volume of Solid Materials, describes the various technologies and considerations for the selection of solids level and volume measurement.
Ludvig Bengtsson Marketing Engineer
When measuring solids there are many considerations for engineers based on the characteristics of the solids. One characteristic is the evenness of the surface.
Guided wave radar reflections are least affected by surface unevenness and non-contacting are most affected, since the radar signal may bounce at an angle.
Other characteristics impacting the quality of the measurements include dielectric constant of the solid, bulk density, filling location, dust, condensation, and whether level or volume is the measurement sought.
A reflected radar signal is impacted by dielectric constant but not bulk density. Conversely acoustic 3D solids scanners are not affected by dielectric constants but are by bulk density. Radar and acoustic measurements handle dust conditions better than alternative technologies such as ultrasonic and laser measurement. If the dust is sticky, consideration must be given to non-stick materials for the antenna surface.
For vessels with condensation, guided wave radar is not affected by it. Non-contacting radar may require air purging systems. Acoustic 3D solids scanners have self-cleaning mechanisms to manage these conditions.
Rosemount 5708S 3D Solids Scanner
If volume measurement is sought, typically for inventory management applications, 3D solids scanners are best. Multiple measurements help to integrate uneven surfaces and provide more accurate volume measurements. The Rosemount 5708V is a good fit for medium silos and the Rosemount 5708S for medium to large silos.
Rosemount 5303 Guided Wave Radar
Rosemount 5402 Non-Contacting Radar
You’ll want to read the technical note to review these considerations and best practices in the selection of the best technology for your solids level and volume measurement applications.
There is an application evaluation form to help in the section process and to engage experts who can assist.
You can also connect and interact with other level measurement experts in the Level group of the Emerson Exchange 365 community.