Yokogawa ADMAG AXW Bedienungsanleitung PDF herunterladen (Seite 13)

  <3.INSTALLATION>

3-4

IM 01E25D11-01EN

• Conrmationofsealingconditionsforthe

owmeter

Conrm that the terminal box screw and wiring ports

are well sealed. Equip the conduit piping with drain

plugs or waterproof glands to prevent moisture or

water from penetrating into the owmeter through

the conduit.

• Regularinspections

Inspect the sealing conditions as mentioned above,

and the inside of the terminal box at least once a

year. Also, due to rain, etc. when it is suspected

that water may have penetrated into the inside

owmeter perform supplementary inspections.

3.2.2 FlowmeterPiping

CAUTION

Misaligned or slanted piping can lead to leakage

and damage to the anges.

(1) Correct any misaligned or slanted piping, and

any gaps that may exist between mounting

anges before installing the owmeter (refer to

Figure 3.2.2).

Slanted

F0308.ai

Misaligned

Figure3.2.2 SlantedandMisalignedFlowmeter

Piping

(2) Inside a newly installed pipeline, there may

be some foreign substances such as residue

from welding or wood chips. Remove them

by ushing the piping before mounting the

owmeter. This prevents the lining from

being damaged, as well as the occurrence

of erroneous measured signals resulting

from foreign substances passing through the

owtube during measurement.

3.3 MountingProcedures

CAUTION

When attaching optional grounding rings to

the owtube with lining material natural hard

rubber or uorocarbon PTFE, gaskets must be

placed between each grounding ring and the

owtube. Fluid leakage will happen without these

gaskets. These gaskets are to be supplied by

customer. Do not forget those gaskets also when

ordering and attaching the grounding rings later

additionally.

NOTE

The tightening torque value varies depending

on the type of lining and gasket as shown in the

tables in this section.

IMPORTANT

Use bolts and nuts in compliance with the ange

ratings. When choosing the gaskets, be sure to

choose sheet gaskets designed to t for ange

standard.

(1) MountingDirection

Mount the owmeter so that the ow direction of

the uid to be measured is in line with the direction

of the arrow mark on the owmeter. It may be

especially difcult to move large size owtubes after

bringing them into the pit. Check directions before

bringing.

IMPORTANT

If it is impossible to match the direction of

the arrow mark, the direction of the electrical

connection can be changed. Refer to Section 5.1

to do this properly.

In case the uid being measured ows against

the arrow direction, refer to the parameter J20:

FlowDirection in the user’s manual of the

AXFA11 Magnetic Flowmeter Remote Converter

(IM 01E20C01-01E).

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