Endress+Hauser Fieldbus Levelflex M FMP41C Operating Instructions Manual page 55

Levelflex M FMP41C with FOUNDATION Fieldbus
⇒
ENDRESS + HAUSER
–
+ E
!
Endress + Hauser
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.
Function "medium property" (003)
This function is used to select the dielectric constant.
Selection:
• unknown
• 1.4 ... 1.6 (1.4 for installation in metallic pipes)
• 1.6 ... 1.9
• 1.9 ... 2.5
• 2.5 ... 4.0
• 4.0 ... 7.0
• > 7.0
ε
Media group DC ( r)
1 1.4...1.6
2 1.6...1.9
3 1.9...2.5
4 2.5...4
5 4...7
6 > 7
The lower group applies to very loose or loosened bulk solids. Reduction of the max. possible
measuring range by means of:
• extremely loose surfaces of bulk solids, e.g. bulk solids with low piled density when filled
pneumatically.
• Build-up, primarily of moist products.
Note!
Due to the high diffusion rate of ammonia it is recommended to use the FMP45 with gas-tight
bushing for measurements in this medium.
Typical liquids
– Condensed gases, e.g. N , CO
2 2
– Liquefied gas, e.g. Propane
– Solvent
– Frigen / Freon
– Palm oil
– Mineral oils, fuels
– Benzene, styrene, toluene
– Furan
– Naphthalene
– Chlorobenzene, chloroform
– Cellulose spray
– Isocyanate, aniline
– Aqueous solutions
– Alcohols
– Acids, alkalis
Commissioning
Typ. measuring range
4 m (157"), when installed in metallic pipes
9 m (354")
12 m (472")
16 m (629")
25 m (984")
30 m (1181")
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