Installation Requirements; Flow Direction; Electrode Axis; In- And Outlet Pipe Sections - ABB ProcessMaster FEP300 Manual Del Usuario

Mounting
Change from one to two columns
4.4

Installation Requirements

4.4.1

Flow direction

The device measures the flowrate in both directions. Forward flow is
the factory setting, as shown in Fig. 9.
Fig. 9
4.4.2

Electrode axis

Electrode axis (1) should be horizontal if at all possible or no more
that 45° from horizontal.
Fig. 10
4.4.3

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. 11 ).
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. 11
22 - EN
G00657-01
max. 45°
1
G00041
2
3xDN 2xDN
G00983
FEX300, FEX500
4.4.4

Vertical connections

Vertical installation for measuring abrasive fluids, preferably with flow
in upward direction.
Fig. 12
4.4.5

Horizontal connections

• Meter tube must always be completely full.
• Provide for a slight incline of the connection for degassing.
Fig. 13
4.4.6

Free inlet or outlet

• Do not install the flowmeter at the highest point or in the
draining- off side of the pipeline, flowmeter runs empty, air
bubbles can form (1).
• Provide for a siphon fluid intake for free inlets or outlets so
that the pipeline is always full (2).
1
Fig. 14
4.4.7

Strongly contaminated measuring media

For strongly contaminated measuring media, 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. 15
G00039-01
3°
G00038
2
G00040
G00042
CI/FEX300/FEX500-X1