Instruction Manual
DM08
Installation in unfilled pipeline:
If a pipeline is not always filled, or in case of an open channel (drainage), the sensor must
be installed in a siphon. That means the flow tube cannot run dry and is always filled with
measured medium.
Installation between tees, valves and pumps:
Always maintain the distance of the pipe's straight run (Fig. 5). If these distances cannot be main-
tained, flow conditioners must be installed or pipes with smaller diameter must be used.
If several sensors are installed in series, the distance between each sensor must be equal to the
length of one sensor. If two or more sensors are to be installed in parallel, the distance between
sensors must be at least 1 m.
Measures during malfunctions:
In case of malfunctions in the inflow section due to vortexing (e.g. after pipe elbows, at tangential
inclusions or with a half-open gate before the sensor), measures for normalisation of the flow pro-
file are necessary.
The appropriate steps are:
increasing the inflow and outflow zones
using flow conditioners
reducing the inner diameter of the pipe
Technical changes reserved
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15
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