Endress+Hauser Micropilot FMR52 - Measurement in a Plastic Vessel; Optimization Options

Installation Micropilot FMR51, FMR52 FOUNDATION Fieldbus
22 Endress+Hauser
6.1.4 Measurement in a plastic vessel
If the outer wall of the vessel is made of a non-conductive material (e.g. GRP), microwaves
can also be reflected off interfering installations outside the vessel (e.g. metallic pipes (1),
ladders (2), grates (3), ...). Therefore, there should be no such interfering installations in
the signal beam. Please contact Endress+Hauser for further information.
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3
1
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6.1.5 Optimization options
• Antenna size
The bigger the antenna, the smaller the beam angle α and the fewer interference echoes
→  23.
• Mapping
The measurement can be optimized by means of electronic suppression of interference
echoes.
See the Confirm distance parameter (→  130) for details.
• Antenna alignment
Take into account the marker on the flange or threaded connection →  26
→  29 .
• Stilling well
A stilling well can be applied to avoid interferences →  30.
• Metallic screens mounted at a slope
They spread the radar signals and can, therefore, reduce interference echoes.