Prosonic M
Endress+Hauser 17
Installation in narrow shafts
Installation conditions for flow
measurements
• Install the Prosonic M at the inflow side, as close above the maximum water level H
max
as possible (take into
account the blocking distance BD).
• Position the Prosonic M in the middle of the channel or weir.
• Align the sensor membrane parallel to the water surface.
• Keep to the installation distance of the channel or weir.
• You can enter the "Flow to Level" linearisation curve ("Q/h curve") using FieldCare or manually via the on-
site display.
Example: Khafagi-Venturi flume
L00-FMU4xxxx-17-00-00-en-003
A: Khafagi-Venturi flume, B: inflow, C: outflow, BD: blocking distance, E: empty calibration, F: full calibration,
V: direction of flow
In narrow shafts with strong interference echoes, we
recommend using an ultrasound guide pipe (e.g. PE
or PVC wastewater pipe) with a minimum diameter
of 100 mm (3.94 in).
Make sure that the pipe is not soiled by accumulated
dirt. If necessary, clean the pipe at regular intervals.
L00-FMU4xxxx-17-00-00-en-010
ENDRESS+HAUSER
Prosonic M
ENDRESS+HAUSER
Prosonic M
venting
hole
1xb
0
b
0
BD
A
E
BC
V
H
max
=F
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