Endress+Hauser Micropilot FMR56 - Expert → Sensor → Mapping

Micropilot FMR50/FMR51/FMR52/FMR53/FMR54/FMR56/FMR57 FOUNDATION Fieldbus The "Expert" menu
Endress+Hauser 97
3.2.13 Expert → Sensor → Mapping
Overview
The mapping is used to suppress interference signals which may be generated by internal
tank or silo fittings. A mapping curve, representing the envelope curve of an empty tank
or silo as precisely as possible, is used for the mapping.
In the case of a static envelope curve evaluation
3)
, all echos below the mapping curve are
ignored in the signal evaluation.
0
20
40
60
80
100
120
[dB]
[m (in)]
2
1
3 3 3 4
A0020608
1 Mapping curve
2 Envelope curve
3 Interference echos; covered by the mapping curve
4 Level echo; exceeds the envelope curve
In the case of a dynamic envelope curve evaluation
3)
echos from below the map can also
be taken into account. In this case the static envelope curve evaluation serves as a starting
point as long as enough history information is not yet available.
3) For the difference between static and dynamic envelope curve evaluation refer to the "Expert → Sensor → Echo tracking" submenu.