ABB CoriolisMaster FCM2000 Operating Instructions Manual page 25

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Horizontal Installations, Self Draining
Horizontal Installations, Self Draining, α 2 - 4°
Fig. 16:
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Installation in a Drop Line
The installation recommendation shown in Fig. 17 is only permissible
if a pipeline reduction or orifice with a smaller cross-section can be
installed to prevent the flowmeter sensor from partially draining
during the measurements.
Fig. 17: Installation in a Drop Line
1 Supply reservoir
2 Flowmeter sensor
3 Orifice/pipe constriction
4 Valve
5 Product reservoir
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D184B111U02
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Difficult Installation Conditions
The accumulation of air or gas bubbles in the meter pipe can lead to
increased inaccuracies. Fig. Fig. 18 shows critical installation con-
ditions.
Installations at the highest point in the pipeline (Figure A) can result
in the formation of air pockets which can lead to appreciable
inaccuracies.
Another difficult installation condition is immediately upstream of a
free discharge (Figure B) in a drop line.
G00304
1
Fig. 18:
2
Important:
Check whether the coordination flowmeter sensor and transmitter is
correct. Compatible devices have the same end numbers, e.g., X001
3
and Y001 or X002 and Y002, on the type plate.
4
Pressure losses
The pressure losses, at the operating conditions, depends on the
fluid and the actual flow. To calculate the pressure loss, the design
program CD-CALC is provided.
5
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G00305
CoriolisMaster FCM2000
Difficult Installation Conditions
Installation
A
B
G00306
25