Liquid Measuring Media - ABB CoriolisMaster FCB400 Series Manual

30 CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | CI/FCB400/FCH400-EN REV. H
... 5 Installation
... General installation conditions
Brackets and supports
No special supports or damping are required for the device when
the device is used and installed as intended.
In systems designed in accordance with 'Best Practice', the
forces acting on the device are already sufficiently absorbed.
This is also true of devices installed in series or in parallel.
For heavier devices, it is advisable to use additional supports /
brackets on site. Doing this prevents damage to the process
connections and piping from lateral forces.
Please observe the following points:
• Mount two supports or brackets symmetrically in the
immediate vicinity of the process connections.
• Do not fasten any supports or brackets to the housing of
the flowmeter sensor.
Note
For increased vibration load, such as for example on ships, the
use of the 'CL1' marine design is recommended.
Inlet section
The sensor does not require any inlet section.
The devices can be installed directly before/after manifolds,
valves or other equipment, provided that no cavitation is caused
by this equipment.
Mounting position
The flowmeter operates in any mounting position.
Depending on the measuring medium (liquid or gas) and the
measuring medium temperature, certain mounting positions are
preferable to others.For this purpose, consider the following
examples.
The preferred flow direction is indicated by the arrow on the
sensor.The flow will be displayed as positive.
The specified measuring accuracy can be achieved only in the
calibrated flow direction (for forward flow calibration, this is
only in the direction of the arrow; for the optional forward flow
and reverse flow calibration, this can be in both flow directions).

Liquid measuring media

Observe the following points to avoid measuring errors:
• The meter tubes must always be completely filled with
the measuring medium.
• The gases dissolved in the measuring medium must not
leak out. To safeguard this, a minimum back pressure of
0.2 bar (2.9 psi) is recommended.
• The minimum vapor pressure of the measuring medium
must be maintained when there is negative pressure in
the meter tube or when liquids are gently simmering.
• During operation, there must be no phase transitions in
the measuring medium.
Vertical installation
1 Supply tank
2 Sensor
3 Piping constriction / orifice
Figure 6: Vertical installation
4 Turn-off device
5 Filling tank