CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | OI/FCB400/FCH400-EN REV. E 33
Gaseous measuring media
Observe the following points to avoid measuring errors:
• Gases must be dry and free of liquids and condensates.
• Avoid the accumulation of liquids and the formation of
condensate in the meter tube.
• During operation, there must be no phase transitions in
the measuring medium.
If there is a risk of condensate formation when using gaseous
measuring media, note the following:
Ensure that condensates cannot accumulate in front of the
sensor.
If this cannot be avoided, we recommend that the sensor is
installed vertically with a downward flow direction.
Vertical installation
For vertical installation, no special measures are required.
Horizontal installation
G11609
A
B
Figure 11: Horizontal installation
A For gaseous measuring media and horizontal installation, the
transmitter and terminal box must point downward.
B Installing the sensor at the lowest point of the piping leads
to an increased number of measuring errors due to the
accumulation of liquid or the formation of condensates in
the meter tube.
Turn-off devices for the zero point
adjustment
1 Turn-off device
Figure 12: Mounting options for turn-off devices (example)
To guarantee the conditions for zero point balancing under
operating conditions, turn-off devices are required in the piping:
A At least on the outlet side when the transmitter is
mounted in horizontal position
B At least on the inlet side when the transmitter is mounted
in vertical position.
C In order to perform balancing during an ongoing process,
it is advisable to mount a bypass pipe.
G11589
A
B
C
1
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