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IM 01F06A00-01E
INTRODUCTION
■ Using the Vortex Flowmeter Safely
WARNING
(1) Installation
• Installation of the vortex flowmeter must be
performed by expert engineer or skilled person-
nel. No operator shall be permitted to perform
procedures relating to installation.
• The vortex flowmeter is a heavy instrument.
Be careful that no damage is caused to person-
nel through accidentally dropping it, or by
exerting excessive force on the vortex flowme-
ter. When moving the vortex flowmeter, always
use a trolley and have at least two people carry
it.
• When the vortex flowmeter is processing hot
fluids, the instrument itself may become ex-
tremely hot. Take sufficient care not to get
burnt.
• Where the fluid being processed is a toxic
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after the
instrument has been taken off the line for
maintenance and so forth.
• All procedures relating to installation must
comply with the electrical code of the country
where it is used.
(2) Wiring
• The wiring of the vortex flowmeter must be
performed by expert engineer or skilled person-
nel. 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
specified 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 functional grounding must be connected
securely at the terminal with the mark to
avoid danger to personnel.
(3) Operation
• Only expert engineer or skilled personnel are
permitted to open the cover.
(4) Maintenance
• Maintenance on the vortex flowmeter should be
performed by expert engineer or skilled person-
nel. No operator shall be permitted to perform
any operations relating to maintenance.
• Always conform to maintenance procedures
outlined in this manual. If necessary, contact
Yokogawa.
• Care should be taken to prevent the build up of
dirt, dust or other substances on the display
panel glass or data plate. If these surfaces do
get dirty, wipe them clean with a soft dry cloth.
(5) Explosion Protected Type Instrument
• For explosion proof type instrument, the de-
scription in Chapter 10 “EXPLOSION PRO-
TECTED TYPE INSTRUMENT” is prior to the
other description in this user's manual.
• Only trained persons use this instrument in the
industrial location.
• The functional grounding must be connected
to a suitable IS grounding system.
• Take care not to generate mechanical spark
when access to the instrument and peripheral
devices in hazardous locations.
(6) European Pressure Equipment Directive
(PED)
• When using the instrument as a PED-compliant
product, be sure to read Chapter 11 before
use.
• Do not open the cover in wet weather or high
humidity.
If the cover is opened, provided protection with
the enclosure is not warrantable.
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