Troubleshooting Prosonic M - FOUNDATION Fieldbus
64 Endress+Hauser
7.2 Application errors
Error Example Elimination
Measured value (00) is
incorrect but measured
distance (008) is correct
L00-FMR2xxxx-19-00-00-en-019
1. Check empty calibration (005) and
full calibration (006).
(FF: Sensor Block, PAREMPTYCALIBRATION, PARFULLCALIBRATION
2. Check linearisation
– level/ullage (040)
(FF: Sensor Block, PARLEVELULLAGEMODE)
– max. scale(046)
(FF: Sensor Block, PARMAXVOLUME)
– diameter vessel (047)
(FF: Sensor Block, PARCYLINDERVESSEL
– linearisation table
Measured value (000) and
measured distance (008)
are incorrect
1. For measurements in bypass or stilling well:
Select the according option in the "tank shape" (002) function
(FF: Sensor Block, PARTANKSHAPE)
2. Carry out interference echo suppression
No change in
measured value on filling/
emptying
L00-FMR2xxxx-19-00-00-en-014
1. Carry out interference echo suppression.
2. Clean sensor if necessary
3. If necessary, select better installation position
4. If necessary due to wide interference echoes, set function "detection
window" (0A7) to "off"
(FF: Sensor Block, PARDETECTIONWINDOW)
With an uneven surface
(e.g. filling, emptying,
running agitator) the
measured value
may jump sporadically to
higher
levels
L00-FMR2xxxx-19-00-00-en-015
L00-FMR2xxxx-19-00-00-en-016
1. Carry out interference echo suppression
2. Set the process cond. (004) to "calm surface" or "add. agitator"
FF: Sensor Block, PARPROCESSCONDITION)
3. Increase output damping (058).
(FF: Sensor Block, PAROUTPUTDAMPING)
4. If necessary, select a different installation position and/or a larger sensor
100%
F m/ft
E m/ft
0% t
→
D m/ft (008)
actual
expected
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