Levelflex M FMP40
32 Endress+Hauser
Operating conditions: installation with interface
measurement
General information on
interface measurement
The Levelflex M with the "Interface" electronics version ("power supply, output" feature) it the ideal choice for
measuring interfaces. However, it is also possible to measure interfaces with a special version of the standard
device but the total level has to remain constant here. This version is available on request.
In addition, the following general conditions must be observed for interface measurement:
• The DC of the upper medium must be known and constant. The DC can be determined with the aid of the
DC manual CP00019F/00/EN. In addition, whenever the interface thickness is existing and known, the
DC can be calculated automatically via FieldCare.
• The DC of the upper medium may not be greater than 10.
• The DC difference between the upper medium and lower medium must be >10.
• The interface must have a minimum thickness of 60 mm (interface electronics version) or 100 mm (special
version).
• Emulsion layers in the vicinity of the interface can severely dampen the signal. However, emulsion layers up
to 50 mm are permitted.
"Interface" electronics version Special version
L00-FMP4xxxx-15-00-00-xx-001 L00-FMP4xxxx-15-00-00-xx-002
Function • Measurement of variable interfaces
and variable total levels.
• Variable assignment of the
output parameters.
• Extended interface function
Measurement of variable interfaces with the
prerequisite of a constant total level
Commissioning Interface-specific menu guidance via onsite
display or DTM
Special configuration, see modification information
SV0107F/00/A2
Digital
Communication
HART PROFIBUS PA, FOUNDATION Fieldbus
Ordering
information
FMP40 - #### ### K #### FMP40 - #### ### D ###Y (PROFIBUS PA)
FMP40 - #### ### F ###Y (FOUNDATION Fieldbus)
Y = Special version available on request
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