Yokogawa ADMAG AXW Uživatelský manuál stáhnout pdf (Strana 12)

<3. INSTALLATION>

3-3

IM 01E25D11-01EN

• Mounting orientation

IMPORTANT

If electrodes are perpendicular to the ground, air

bubbles near the top or precipitates at the bottom

may cause measurement errors. Ensure that the

terminal box of a remote owtube is mounted

above the piping to prevent water from entering

them.

F0306.ai

Correct

Incorrect

Electrode

Air bubble

Precipitate

Electrode

Incorrect

Water can

seep into

the terminal

box.

Figure 3.1.6 Mounting Orientation

3.2 Handling Precautions

WARNING

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.

3.2.1 General Precautions

(1) Precaution during Transportation

The magnetic owmeter is packed tightly. When

it is unpacked, pay attention to prevent damaging

the owmeter. To prevent accidents while it is being

transported to the installing location, transport it to

the site in its original packing.

CAUTION

When lifting the owtube, use the lifting rings

(eye bolts or eye plates) as in Figure 3.2.1.

Never lift it using a bar passed through the

owtube as this damages the liner severely.

F0307.ai

90 degrees or less

Eye bolt Eye plate

Figure 3.2.1 Lifting Flowtube

(2) Avoiding Shocks from Impact

CAUTION

Care should be taken not to drop the owmeter

or expose it to excessive shock. In particular, be

careful not to subject the ange surface to shock.

This may lead to liner damage which will result in

inaccurate readings.

(3) Flange Protection Covers

IMPORTANT

Keep the protective covering (i.e. the corrugated

cardboard or other cushioning material) in place

over the ange except when mounting the

owmeter to the pipe.

(4) Terminal Box Cover

IMPORTANT

As it is possible that the insulation will

deteriorate, do not remove the wrapping of the

terminal box nor open the terminal box cover

until it is time to wire it.

(5) Long-term Non-use

IMPORTANT

It is not desirable to leave the owmeter unused

for a long term after installation. If this situation

is unavoidable, take care of the owmeter by

observing the following.

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