Levelflex M FMP41C with HART/4...20 mA Commissioning
Endress + Hauser 49
6.5 Blocking distance
Function "upper block. dist" (059)
For rod probes and for rope probes with lengths of up to 8 m, the upper blocking distance is preset
to 0.2 m on delivery.
For rope probes with lengths of more than 8 m, the upper blocking distance is preset to 2.5% of the
probe length.
For media with DC > 7, the upper blocking distance for rod and rope probes can be reduced to 0.1
m, if the probe is mounted flush with the wall or in a nozzle of maximum 50 mm.
Blocking distance and measuring range
At the lower end of the probe there is no blocking distance but a transition region with reduced
accuracy, see section "Maximum measured error" on → ä 50.
!
Note!
Within the upper and lower blocking distance, a reliable measurement can not be guaranteed.
For stilling well applications
The upper blocking distance (UB) is preset to 100 mm when the "bypass/pipe" parameter has been
selected in the "tank properties" (002) function.
⇒
ENDRESS + HAUSER
E
+
–
FMP41C
LN [m] UB [m]
min max min
Rod probe 0,3 4 0,2
1)
1) The indicated blocking distances are preset. At media with DC > 7, the upper blocking
distance UB can be reduced to 0.1 mm for rod and rope probes. The upper blocking
distance UB can be entered manually.
Rope probe 130 0,2
1)
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