IM 01C25R03-01E
1-2
1. INTRODUCTION
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 im-
paired. In this case, Yokogawa cannot guarantee that
the instrument can be safely operated. Please pay
special attention to the following points:
(a) Installation
• This instrument may only be installed by an engi-
neer 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 work shall comply with local
installation requirements and the local electrical
code.
(b) Wiring
• 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
• Wait 5 min. after the power is turned off, before
opening the covers.
(d) Maintenance
• 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
• Users of explosion proof instruments should refer
first to section 2.1 (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
• Yokogawa will not be liable for malfunctions or
damage resulting from any modification made to this
instrument by the customer.