Mounting
D184B140U02 FSM4000 27
Change from one to two column s
4.6 Installation Requirements
The device measures the flowrate in both directions. Forward flow is
the factory setting, as shown in Fig. 15.
G00990
Fig. 15
The following items must be observed:
4.6.1 Electrode axis
Electrode axis (1) as level as possible or rotated max. 45°.
G00041
max. 45°
1
Fig. 16
4.6.2 In- and outlet pipe sections
The metering principle is independent of the flow profile as long as
standing eddies do not extend into the metering section, such as may
occur after double elbows (1), in the event of tangential inflow, or
where half-open gate valves are located upstream of the flowmeter
sensor.
In such cases, measures must be put in place to normalize the flow
profile.
• Do not install fittings, manifolds, valves, etc., directly in front of
the flowmeter sensor (1).
• Butterfly valves must be installed so that the valve plate does not
extend into the flowmeter sensor.
• Valves or other turn-off components should be installed in the
outlet pipe section (2).
Experience has shown that, in most installations, straight inlet
sections 3 x DN long and straight outlet sections 2 x DN long are
sufficient (DN = nominal diameter of the sensor Fig. 17 ).
For test stands, the reference conditions of 10 x DN straight inlet and
5 x DN straight outlet must be provided, in accordance with EN
29104 / ISO 9104.
G00983
1
2
2xDN
3xDN
Fig. 17
4.6.3 Vertical connections
• Vertical installation for measuring abrasive fluids, preferably with
flow in upward direction.
G00985
Fig. 18
4.6.4 Horizontal connections
• The measuring tube must always be full.
• Provide for a slight incline of the connection for degassing.
G00984
3°
Fig. 19
4.6.5 Free inlet or outlet
• For a free outflow, do not install flowmeter at the highest point in
the pipeline, since measuring tube may empty, creating bubbles
(1).
• For free inflow/outflow, provide an invert, to ensure that the
pipeline is always full (2).
G00986
1
2
Fig. 20
4.6.6 Strongly contaminated fluids
• For strongly contaminated fluids, a bypass connection according
to the figure is recommended so that operation of the system can
continue to run without interruption the during the mechanical
cleaning.
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