Installation Requirements; Electrode Axis; In- And Outlet Pipe Sections; Vertical Connections - ABB FSM4000 Instrucciónes De Puesta En Marcha

Mounting
Change from one to two columns
3.6

Installation Requirements

The device measures the flowrate in both directions. Forward flow is
the factory setting, as shown in Fig. 8.
Fig. 8
The following items must be observed:
3.6.1

Electrode axis

Electrode axis (1) as level as possible or rotated max. 45°.
Fig. 9
3.6.2

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. 10 ).
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.
1
Fig. 10
18 - EN
G00990
max. 45°
1
G00041
2
3xDN 2xDN
G00983
FSM4000
3.6.3

Vertical connections

• Vertical installation for measuring abrasive fluids, preferably with
flow in upward direction.
Fig. 11
3.6.4

Horizontal connections

• The measuring tube must always be full.
• Provide for a slight incline of the connection for degassing.
Fig. 12
3.6.5

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).
1
Fig. 13
3.6.6

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.
Fig. 14
G00985
3°
G00984
2
G00986
G00987
D184B141U03