Mounting; Orientation - ABB 10DX3111G Instruction Manual

10DX3111 INSTRUCTION MANUAL

2.4 Mounting

2.4.1 Orientation

The ABB Instrumentation Model 10DX3111 Magnetic Flowmeter may be oriented at any angle in
the pipeline. However, precautions must be taken to assure that the metering tube is filled at all
times during measurement. A vertical installation of the metering tube in a pipeline carrying fluid
upwards assures a filled hydraulic line under low flow rate conditions and also minimizes uneven
wear on the meter lining by abrasive grit. Horizontal installations should be made in a lower seg-
ment of the pipeline to assure a filled meter condition. Further, for horizontal or sloping installa-
tions, the meter should be placed so that the connection bosses are on top to align the meter
electrodes in a lateral plane. Positioning the meter in this way eliminates the possibility of en-
trained air acting as an electrode insulator.
The Magnetic Flowmeter may be mounted in the pipeline without regard to flow direction. If greasy
sludges or insulating materials which tend to coat pipe walls are to be metered, it is recommended
that in addition to standard block valves and bypass line, a clean-out tee be installed as shown in
Figure 2-2 to facilitate meter cleaning without removal or interruption of the process.
FIGURE 2-2. RECOMMENDED PIPING CONNECTIONS
Note that the flowmeter shown in this illustraton is not the meter described in
this instruction bulletin.
2-4