Endress+Hauser Levelflex M FMP40 Brief Operating Instructions page 31

Levelflex M FMP40 FOUNDATION Fieldbus
!
Note!
If "aluminium tank" is selected, the device calibrates of its own accord when first filled,
depending on the medium's properties. Slope errors can, therefore, occur when beginning the
first filling procedure.
plastic tank
Select the "plastic tank" option when installing probes in wood or plastic containers without
metallic surfaces at the process connection (see installation in plastic containers). When using a
metallic surface at the process connection, the "standard" option is sufficient!
!
Note!
In principle the employment of a metallic surface area should be preferred at the process
connection!
bypass / pipe
The "bypass / pipe" option is designed especially for the installation of probes in a bypass or a
stilling well. If this option is selected, the upper blocking distance is preset to 100 mm.
coax probe
Select the "coax probe" option when using a coaxial probe. When this setting is made, the
evaluation is adapted to the high sensitivity of the coax probe. This option should, therefore, not
be selected when using rope or rod probes.
concrete wall
The "concrete wall" option takes into account the signal-damping property of concrete walls
when mounting with < 1 m distance to the wall.
5.4.4 Function "medium property" (003)
ENDRESS + HAUSER
–
+
E
This function is used to select the dielectric constant.
Selection
• unknown
• 1.4 ... 1.6 (use coaxial or Rod probe with installation in metallic pipes ≤ DN150)
• 1.6 ... 1.9
• 1.9 ... 2.5
• 2.5 ... 4.0
• 4.0 ... 7.0
• > 7.0
Endress+Hauser
⇒
Commissioning
31