Pipe Connections; Figure 2-4. Recommended Piping Arrangement - ABB MINI-MAG 10D1475 Instruction Manual

10D1475 MINI-MAG MAGNETIC FLOWMETER INSTRUCTION BULLETIN

FIGURE 2-4. RECOMMENDED PIPING ARRANGEMENT

2.3.3 Pipe Connections

The Model 10D1475 Magnetic Flowmeter has a wafer type body designed for mounting between
adjacent pipe flanges. Most commonly used ANSI, BS and DIN type flanges can be accommodated.
Mounting hardware (studs, nuts, gaskets and the flange adaptor device(s) for the particular flange
type and rating specified) is supplied for use with common ANSI flanges. Line schedule 80 or lighter
pipe is recommended for system piping.
When the Magnetic Flowmeter is to be mounted in an electrically non-conductive pipeline such as
totally plastic pipe, or a metal pipeline with an insulating liner, the user must obtain a pair of meter
grounding rings (discussed in Section 2.4 Grounding Procedure) to facilitate grounding of the
process. Good grounding is effected by bonding the meter body to the process liquid both upstream
(inlet end) and downstream (outlet end) of the meter; thereby preventing any stray electrical currents
that may be carried by the pipeline, or by the process, from passing through the Magnetic Flowmeter.
Improper grounding often results in unsatisfactory meter performance, therefore particular attention
should be paid to the meter grounding procedure.
The threaded mounting studs and nuts supplied in the meter installation kit should be well lubricated
before use. When the meter has been installed in the pipeline, tighten the nuts in even increments
around the flange surface. It is recommended that an open end wrench with a handle length no
greater than 8 inches be used for tightening the nuts; i.e., torque should be limited to that which will
produce a positive seal without damage to the face of the meter lining.
2-6 INSTALLATION