<1. INTRODUCTION>
1-3
IM 01R01B30-00E-E 8th edition November 01, 2019-00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
The following basic safety instructions must be
observed when handling the flow meter:
• Carefully read the user's manual prior to
operating the flow meter.
• When using the flow meter in areas at risk of
explosion, compliance with chapter 7 is mandatory.
• Only qualified personnel must be charged with
the tasks described in this user's manual.
• Ensure that personnel complies with locally
applicable regulations and rules for working
safely.
• Do not remove or cover safety markings and
nameplates from the flow meter.
• Replace soiled or damaged safety markings
on the flow meter. For replacing please contact
the Yokogawa Service Center.
• When performing welding tasks on the tube, it is
important not to ground the welding equipment
by way of the flow meter. Soldering and welding
work on parts of the flow meter is prohibited.
• The operator is responsible for ensuring that
design limits (pressure, temperature) are not
exceeded in the event unstable fluids decay.
• External influences may result in failure of threaded
connections. The operator is responsible for
providing suitable protective measures.
• Compression and shock waves in the tubes can
cause damage to the device. For this reason it
is important to avoid exceeding the design limits
(pressure, temperature).
• Fires may result in increased process pressure
(caused by temperature-related volume changes)
and failure of gaskets. The operator is responsible
for taking suitable measures to prevent fire-related
damage.
• Manufacturing methods and technologies have
been successfully field-tested for decades.
Erosion and/or corrosion are not taken into
account.
• Removal of material from the flow meter with
power tools such as drills or saws is not permitted.
• Any repair, modification, replacement or
installation of replacement parts is permitted
only so long as it is in keeping with this user's
manual. Other work must be first authorized by
Rota Yokogawa. Rota Yokogawa does not assume
liability for damage caused by unauthorized work
on the flow meter or by improper use.
• The RAKD flowmeter is a heavy instrument.
Be careful that no damage is caused through
accidentally dropping it, or by exerting excessive
force on the RAKD flowmeter.
• All procedures relating to installation must comply
with the electrical code of the country where it
is used.
• 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.
• Always conform to maintenance procedures
outlined in this manual. If necessary, contact
your Yokogawa representative.
• Build up of dirt, dust or other substances on the
display panel glass should be prevented.
If these surfaces do get dirty, wipe them clean
with a soft dry cloth.
• Don’t open the cover during rain.
• The electronic assembly contains sensitive
parts. Be aware not to directly touch the
electronic parts or circuit patterns on the board,
and by preventing static electrification using
grounded wrist straps when handing the assembly.
• For explosion proof type instruments the
description in chapter 7 has priority to the
other descriptions in this instruction manual.
• All instruction manuals for ATEX Ex related
products are available in English and German.
Should you require an Ex related
instruction in your local language, you should
please contact a Yokogawa representative.
