Endress+Hauser Micropilot FMR56 - Advanced Process Conditions; Level Unit

Operating menu Micropilot FMR56, FMR57 FOUNDATION Fieldbus
140 Endress+Hauser
Advanced process conditions 
Navigation  Setup → Advanced setup → Level → Adv. conditions
Description Specify additional process conditions (if required).
Selection • Many obstacles
• Weak signal
Factory setting None
Additional information "Many obstacles" option
This option otimizes the signal evaluation for bulk solid applications with a large
measuring range where obstacles generate many interference echos. With this selection
the last echo in the envelope curve will always be evaluated. For strongly damping media
this is always the level echo.
The Many obstacles option is only available for bulk solid applications (FMR56,
FMR57).
Preconditions for the application of the "Many obstacles" option
• Medium type (→  139) = Solid
• Strongly damping medium (e.g. flour, wheat, cereals, ...)
• No multiple echos if the tank is full
• Interference echo suppression only in the near field (ringing area)
• Expert → Sensor → Echo tracking → Evaluation mode = Short time history
"Weak signal" option
This option improves the detectability of small level echos in bulk solid applications with
very weak signal amplitudes.
The Weak signal option is only available for bulk solid measurements (FMR56,
FMR57).
Level unit 
Navigation  Setup → Advanced setup → Level → Level unit
Description Select level unit.
Selection
SI units
• %
• m
• mm
US units
• ft
• in
Factory setting %
Additional information The level unit may differ from the distance unit defined in the Distance unit parameter
(→  127):
• The unit defined in the Distance unit parameter is used for the basic calibration (Empty
calibration (→  128) and Full calibration (→  129)).
• The unit defined in the Level unit parameter is used to display the (unlinearized) level.