Location; Standard And Accidental Submergence; Continuous Submergence - ABB MAG-X 3000 Series Instruction Manual

Magnetic flowmeters
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INSTRUCTION MANUAL 10DX3111A&G Sizes 14 - 24 Inches

2.3 Location

2.3.1 Standard and Accidental Submergence

The Flowmeter is suitable for either indoor or outdoor installation. When selecting the installation
site, consideration should be given to the ambient and process temperature limits, as stated in
Section 1.3 Specifications. Consideration should be given to access for servicing the meter. The
standard meter is rated NEMA 4X, watertight, and will thus stand rain and hose down. If flooding is a
problem, the optional IEC 529 IP67 flowmeter is well suited for occasional submersion.
The Signal Converter includes RFI filters that provide excellent protection against radiated RFI/EMI.
Therefore, stray electromagnetic and electrostatic fields, low power radio transmissions, etc. will
have no effect upon the operating characteristics of the electronic package of the MAG-X Magnetic
Flowmeter systems. It is recommended, however, that the meter not be installed within the immediate
proximity of heavy induction equipment.
Provide access for wiring interconnections and occasional servicing of the meter. At least 5 inches
overhead clearance is required for cover removal. Outline dimensions of the remote mounted Signal
Converter are given in the Instruction Bulletin supplied with the Signal Converter.
The installation site must be provided with a convenient source of power as specified for the Signal
Converter. The power line should have a disconnect switch, and a suitable fuse or circuit breaker as
shown on the applicable interconnection diagram (provided in the Instruction Bulletin supplied with
the Signal Converter). If the pipeline is not a good ground, a suitable earth ground must be made
available in proximity to the installation site.
In-line meter maintenance is minimized as no operating adjustments are required in the Magnetic
Flowmeter. Servicing accessibility is of secondary importance unless greasy sludges or liquids
bearing insulating materials which tend to coat pipe walls are to be metered. However, sufficient
access room should be allocated to facilitate electrical interconnection and permit field replacement
of electrodes should the need arise.
Outline dimensions for the flowmeters are shown in Figure 2-2.

2.3.2 Continuous Submergence

The continuous submergence option, when specified, contains special design features that permit
the meter to operate properly when submerged completely under water or buried in the ground. The
Primary contains special liquid-tight fittings on top of the meter that properly seal the signal and coil
excitation cable entry ports. The interconnection between primary and converter may be seen in
Figure 2-10.
The 50XM or M2 converter furnished with this design has an additional circuit assembly (P/N
686B735U07) which establishes the correct coil excitation current for the primary. Take notice of the
required connections to converter terminals M1 & MR for this configuration. In addition, the heavy
black wire connected to terminal #3 of the primary must be connected to terminal #3 in the converter
along with the .025 square post connection already present.
Once installation is complete, full flow must be established to purge all entrapped air in the pipeline.
A system zero must then be performed under a full pipe, no flow condition. Refer to the instruction
bulletin provided with the converter for instructions on performing this procedure.
2-3

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