Endress+Hauser Profi Bus Levelflex M FMP40 - Blocking Distance

Commissioning Levelflex M FMP40 with PROFIBUS PA
76 Endress + Hauser
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 77.
!
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
+
–
FMP40
LN [m] UB [m]
min max min
Rope probe 135
1)
1) Larger measuring range available on request.
0,2
2)
2) 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.
6 mm rod probe 0,3 0,2
2)
16 mm rod probe 0,3 4 0,2
2)
Coax probe 0,3 4 0