Mounting Prosonic M FOUNDATION Fieldbus
8 Endress+Hauser
2.3.2 Installation in narrow shafts
2.3.3 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 operating program
FieldCare or manually via the on-site display.
Example: Khafagi-Venturi flume
L00-FMU4KAxx-17-00-00-en-003
In narrow shafts with strong interfe-
rence echoes, we recommend using an
ultrasound guide pipe (e.g. PE or PVC
wastewater pipe) with a minimum dia-
meter 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
Khafagi - Venturi - flume
direction of flow
inflow
outflow
empty calibr.