<1. Introduction>
1-3
IM 01C25B01-01E
1.1 Safe Use of This Product
For the safety of the operator and to protect the
instrument and the system, please be sure to follow
this manual’s safety instructions when handling this
instrument. If these instructions are not heeded,
the protection provided by this instrument may be
impaired. In this case, Yokogawa cannot guarantee
that the instrument can be safely operated. Please
pay special attention to the following points:
(a) Installation
WARNING
• This instrument may only be installed by an
engineer or technician who has an expert
knowledge of this device. Operators are not
allowed to carry out installation unless they
meet this condition.
• With high process temperatures, care must
be taken not to burn yourself by touching the
instrument or its casing.
• Never loosen the process connector nuts
when the instrument is installed in a process.
This can lead to a sudden, explosive release
of process fluids.
• When draining condensate from the
pressure detector section, take appropriate
precautions to prevent the inhalation of
harmful vapors and the contact of toxic
process fluids with the skin or eyes.
• When removing the instrument from a
hazardous process, avoid contact with the
fluid and the interior of the meter.
• All installation shall comply with local
installation requirements and the local
electrical code.
(b) Wiring
WARNING
• The instrument must be installed by an
engineer or technician who has an expert
knowledge of this instrument. Operators are
not permitted to carry out wiring unless they
meet this condition.
• Before connecting the power cables, please
confirm that there is no current flowing
through the cables and that the power supply
to the instrument is switched off.
(c) Operation
WARNING
• Wait 5 min. after power is turned off, before
opening the covers.
• Do not open the cover in wet weather or
humid environment. If the cover is opened,
stated enclosure protection is not applicable.
(d) Maintenance
WARNING
• Please carry out only the maintenance
procedures described in this manual. If you
require further assistance, please contact the
nearest Yokogawa office.
• Care should be taken to prevent the build
up of dust or other materials on the display
glass and the name plate. To clean these
surfaces, use a soft, dry cloth.
(e) Explosion Protected Type Instrument
WARNING
• Users of explosion proof instruments should
refer first to section 2.9 (Installation of an
Explosion Protected Instrument) of this
manual.
• The use of this instrument is restricted to
those who have received appropriate training
in the device.
• Take care not to create sparks when
accessing the instrument or peripheral
devices in a hazardous location.
(f) Modification
WARNING
• Yokogawa will not be liable for malfunctions
or damage resulting from any modification
made to this instrument by the customer.
(g) Product Disposal
• The instrument should be disposed of in
accordance with local and national legislation/
regulations.
