Endress+Hauser Levelflex FMP51 Operating Instructions Manual page 165

Levelflex FMP51, FMP52, FMP54 FOUNDATION Fieldbus
Signal quality
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Description
Additional information
7) Of these two echos the one with the lower quality is indicated.
Endress+Hauser
 42 Distance for interface measurements
The unit is defined in the Distance unit parameter (→  159).
 Setup → Signal quality
Displays the signal quality of the evaluated echo.
Meaning of the display options
• Strong
The evaluated echo exceeds the threshold by at least 10 mV.
• Medium
The evaluated echo exceeds the threshold by at least 5 mV.
• Weak
The evaluated echo exceeds the threshold by less than 5 mV.
• No signal
The device does not find a usable echo.
The signal quality indicated in this parameter always refers to the currently evaluated
echo: either the level/interface echo
these two, the quality of the end-of-probe echo is always displayed in brackets.
In case of a lost echo (Signal quality = No signal) the device generates the following
error message:
• F941, for Output echo lost (→  199) = Alarm.
• S941, if another option has been selected in Output echo lost (→  199).
D
L
D
L
7)
or the end-of-probe echo. To differentiate between
Operating menu
A0013199
165