Blocking Distance; Used Frequency Spectrum - Endress+Hauser Levelflex M FMP40 Series Technical Information

Levelflex M FMP40

Blocking distance

!

Used frequency spectrum

Endress+Hauser
The upper blocking distance (= UB) is the minimum distance from the reference point of the measurement
(mounting flange) to the maximum level.
At the lowest part of the probe an exact measurement is not possible, see "Performance characteristics" page 16.
F = measuring span
E = empty distance (= zero)
UB = upper blocking distance
LN = probe length
B = minimum distance of the probe
to the container wall
Reference point of the measurement, details page 35
Blocking distance and measuring range:
FMP40
Cable probe
0.24" (6 mm) rod probe
0.63" (16 mm) rod robe
Coax probe
1) Larger measuring range available on request.
2) The indicated blocking distances are preset. At media with DK > 7, the upper blocking distance UB can be reduced
for rod and rope probes on 0.1 m. The upper blocking distance UB can be entered manually.
FMP40 (interface)
Coax probe
0.63" (16 mm) rod probe in the bypass
0.24" (6 mm) rod probe in the bypass
2)
Cable probe in free field
1) The indicated blocking distances are preset. The upper blocking distance UB can be entered manually.
2) Measurements in free field available on request.
3) Larger measuring range available on request.
Note!
Within the blocking distance, a reliable measurement can not be guaranteed.
100 MHz to 1.5 GHz
reference point of
measurement
UB
E
LN
F
B
LN ft (m)
min max
3.3 (1) 115 (35)
1 (0.3) 6.5 (2)
1 (0.3) 13 (4)
1 (0.3) 13 (4)
LN ft (m)
min
1 (0.3)
1 (0.3)
1 (0.3)
1 (0.3)
100%
max. 20 m /67 ft
remote display
FHX 40
0%
L00-FMP4xxxx-17-00-00-en-006
UB ft (m)
min
1) 2)
0.6 (0.2)
2)
0.6 (0.2)
2)
0.6 (0.2)
0
UB ft (m)
max min
13 (4) 0
1)
13 (4) 0.3 (0.1)
1)
6.5 (2) 0.3 (0.1)
1)
3)
33 (10) 0.3 (0.1)
11