3.2 Mounting location
Correct measurement is only possible
when the pipe is full. The following
locations should therefore be avoided:
• No installation at the highest point
(air accumulation).
• No installation immediately before
an open pipe outlet in a downward
line.
The alternative installation, however,
enables correct measurement.
Partly filled pipes
For inclines a mounting similar to a drain
should be adopted.
Added security is offered by Empty Pipe
Detection in order to detect empty or
partly filled pipes (see page 73).
Note!
Danger of solids accumulation!
Do not mount the sensor at the lowest
point of the drain. A cleaning valve
should also be installed.
Downward pipe
With the installation suggested opposite,
partial vacuum is avoided even with a
downward pipe > 5 m long (siphon, vent
valve downstream of the sensor).
h 2 x DN≥
alternatively
ba009y13
Fig. 5
Mounting location
≥ 5xDN
≥ 2 x DN
ba009y14
Fig. 6
Mounting with a partly filled pipe
>5m
ba009y15
Venting valve
Fig. 7
Installation downward pipe
Note!
3 Mounting and Installation Promag 33
10 Endress+Hauser
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