Commissioning Prosonic T
32 Endress+Hauser
6.2.3 Interference echo suppression (tank mapping)
Function "dist./measured value" (008)
In the "dist./meas.value" (008) function, the measured distance D from the sensor membrane
to the product surface is displayed together with level L. Check these values.
Function "check distance" (051)
The mapping is initialized by this function.
L00-FMU3KAxxx-14-00-06-xx-010
1 Distance too small
2Distance = ok
Select
• "distance=ok" if the correct distance is displayed. Any echoes closer to the sensor will be
suppressed by the following interference echo suppression.
• "dist. too small" if the displayed distance is too small. In this case, the signal comes from an
interference echo which will be suppressed.
• "dist. too big" if the displayed distance is too large. This error cannot be cancelled by suppressing
the interference echo. This means that the following two functions are skipped. Check the
application parameters "tank shape" (002), "medium property" (003) and "process
cond." (004) and the "empty calibr."(005) in the "basic setup" (00) function group.
• "dist. unknown" if you do not know the actual distance. This means that the following two
functions are skipped.
• "manual" if you want to specify the suppression area yourself in the following function.
Function "range of mapping" (052)
The suggested suppression area is displayed in this function. The reference point is always the sensor
membrane. You can still edit the value. With manual suppression, the default value is 0 m.
"
Caution!
The suppression range must end 0.3 m (1 ft) in front of the echo of the actual level. With an empty
tank, do not enter E but E – 0.3 m.
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