Operating Conditions: Installation With Interface Measurement; General Information On Interface Measurement - Endress+Hauser Levelflex M FMP40 Series Technical Information

Levelflex M FMP40
General information on
interface measurement
Endress+Hauser
b. Coax probes
Operating conditions: installation with interface
measurement
The Levelflex M with the "Interface" electronics version ("power supply, output" feature) is 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. This version is available on request.
"Interface" electronics version
Function • Measurement of variable interfaces
and variable total levels.
• Variable assignment of the
output parameters.
• Extended interface function
Commissioning Interface-specific menu guidance via onsite
display or DTM
Digital HART
Communication
Ordering FMP40 - #### ### K ####
information
In addition, the following general conditions must be observed for interface measurement:
• The DK of the upper medium must be known and constant. The DK can be determined with the aid of the
DK manual SD106F. In addition, whenever the interface thickness is existing and known, the DK can be
calculated automatically via FieldCare.
• The DK of the upper medium may not be greater than 10.
• The DK difference between the upper medium and lower medium must be >10.
• The interface must have a minimum thickness of 2.4" / 60 mm (interface electronics version) or 4" / 100
mm (special version).
• Emulsion layers in the vicinity of the interface can severely dampen the signal. However, emulsion layers up
to 2" / 50 mm are permitted.
L00-FMP4xxxx-17-00-00-en-054
L00-FMP4xxxx-15-00-00-xx-001
Measurement of variable interfaces with the
prerequisite of a constant total level
Special configuration, see modification information
SV0107
PROFIBUS PA, FOUNDATION Fieldbus
FMP40 - #### ### D ###Y (PROFIBUS PA)
FMP40 - #### ### F ###Y (FOUNDATION Fieldbus)
Y = Special version available on request
Special version
L00-FMP4xxxx-15-00-00-xx-002
25