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<1. INTRODUCTION>
1-2
IM 01F06A00-01EN
1.1 Using This Instrument Safety
(1) Installation
WARNING
Installation of the vortex owmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to installation.
• The vortex owmeter must be installed within
the speci cation conditions.
• The vortex 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
vortex owmeter. When moving the vortex
owmeter, always use a trolley and have at
least two people carry it.
When the vortex 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 vortex owmeter.
Do not open the cover in wet weather or
humid environment. When the cover is open,
stated enclosure protection is not applicable.
When opening the cover, wait for more than
2 minutes after turning off the power.
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 vortex 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 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.
(3) Operation
WARNING
Do not open the cover in wet weather or
humid environment. When the cover is open,
stated enclosure protection is not applicable.
When opening the cover, wait for more than
2 minutes after turning off the power.
(4) Maintenance
WARNING
Maintenance of the vortex owmeter should
be performed by the trained personnel
having knowledge of safety standard. No
operator shall be permitted to perform any
operations relating to maintenance.
Do not open the cover in wet weather or
humid environment. When the cover is open,
stated enclosure protection is not applicable.
When opening the cover, wait for more than
2 minutes after turning off the power.
Always conform to maintenance procedures
outlined in this manual. If necessary, contact
Yokogawa.
7


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