Yokogawa ADMAG AXW Manual de usuario descargar pdf (Pagina 5)

<1. INTRODUCTION>

1-2

IM 01E25D11-01EN

Protective grounding terminal

Functional grounding terminal

(This terminal should not be used as a

protective grounding terminal.)

Alternating current

Direct current

1.1 Using the Magnetic

Flowmeter Safely

(1) Installation

WARNING

• Installation of the magnetic owmeter must

be performed by expert engineer or skilled

personnel. No operator shall be permitted to

perform procedures relating to installation.

• The magnetic owmeter must be installed

within the specication conditions.

• The magnetic owmeter is a heavy instrument.

Be careful that no damage is caused to

personnel through accidentally dropping it, or

by exerting excessive force on the magnetic

owmeter. When moving the magnetic

owmeter, always use a trolley, forklift, or crane

and have at least two people carry it.

• When the magnetic owmeter is processing

hot uids, the instrument itself may become

extremely hot. Take sufcient care not to get

burnt.

• Where the uid being processed is a toxic

substance, avoid contact with the uid and

avoid inhaling any residual gas, even after the

instrument has been taken off the piping line for

maintenance and so forth.

• Do not apply excessive weight, for example, a

person stepping on the magnetic owmeter.

• All procedures relating to installation must

comply with the electrical code of the country

where it is used.

(2) Wiring

WARNING

• The wiring of the magnetic owmeter must

be performed by expert engineer or skilled

personnel. No operator shall be permitted to

perform procedures relating to wiring.

• When connecting the wiring, check that

the supply voltage to the converter is within

the range of the voltage specied for this

instrument before connecting the power cable.

In addition, check that no voltage is applied to

the power cable before connecting the wiring.

• The protective grounding must be connected

securely at the terminal with the mark to

avoid danger to personnel.

(3) Operation

WARNING

• When opening the cover, wait for more than 10

minutes after turning off the power. Only expert

engineer or skilled personnel are permitted to

open the cover.

• Do not open the cover in wet weather or humid

environment. When the cover is open, stated

enclosure protection is not applicable.

• Be sure to set parameters as “Protect” on the

write protect function after nish of parameter

setting work.

Under extremely rare case, the infra-red

switches may respond unexpectedly in

such conditions as sticking ball of water or

extraneous substances on the surface of

display panel glass according to the principle of

infra-red switch operation.

Its probability rises in such cases as sticking

rain water by storm or other similar situation

and washing up work near owmeter

installation place.

Either to illuminate or stop illuminating the infra-

red switches by the ashlight may cause the

mis-reaction.

Refer to the manual for converter on how to

use the write protect function in detail.

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