Commissioning
Levelflex M FMP40 with HART/4...20 mA
52
Hauser
Deviating from this, the following measured error occurs for thin interface layers
(only "K" interface measurement electronics version):
L00-FMP4xIxx-05-00-00-en-001
Function "Medium Property" (003)
Use this function to enter the dielectric constant of the upper medium (upper phase).
Options:
•
2.00
The tables below split the DK values by product group. However, it is not sufficient to assume a
typical value. For accurate interface measurement, it is necessary to determine the DK of the upper
medium (upper phase) as accurately as possible and enter the value in this function.
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, it is also possible to calculate the DK automatically in
FieldCare if the interface thickness is available and known.
0
±
10
±
20
±
30
±4
0
±
50
0
60
200
max
i
mum
measure
d
error
[
mm
]
upper
med
i
um
th
i
c
k
ness of upper med
i
um
[
mm
]
rod probe (examp
l
e), a
l
so va
li
d for coax probe
l
ower med
i
um
N
o measurement
poss
i
b
l
e
i
n
th
i
s area
I
nterface
⇒
E HAUSER
E
+
–
DK (
ε
r)
Typical liquids
1.4 to 1.6
– Liquefied gases, e.g. N
2
, CO
2
1.6 to 1.9
– Liquefied gas, e.g. propane
– Solvent
– Freon
– Palm oil
1.9 to 2.5
– Mineral oils, fuels
2.5 to 4
– Benzene, styrene, toluene
– Furan
– Naphthalene
Summary of Contents for Levelflex M FMP40
Page 4: ...Brief overview Levelflex M FMP40 with HART 4 20 mA 4 Endress Hauser...
Page 87: ...Levelflex M FMP40 with HART 4 20 mA Appendix Endress Hauser 87...
Page 88: ...Appendix Levelflex M FMP40 with HART 4 20 mA 88 Endress Hauser...
Page 90: ...Levelflex M FMP40 with HART 4 20 mA Index 90 Endress Hauser...
Page 92: ...www endress com worldwide BA363F 00 en 03 09 No 71074941 CCS FM SGML 6 0 ProMoDo 71074941...
