YOKOGAWA Total Insight series Quick Reference Instruction Manual page 30

Quick Reference Instruction Manual
Wiring
Risk of injury due to electrical shock, as well as damage to the flow meter
WARNING
due to insufficient clamping of the connecting wires
▶ Completely open connection terminal by using the operating tool.
▶ Insert connecting wires with wire end ferrules into the corresponding connection ter-
▶ Close connection terminal.
Don't install the connection cable at ambient temperatures below -10 °C.
CAUTION
Wiring Work must only be performed at max. 80 % humidity and temperatures up to
NOTICE
31 °C, linearly decreasing to 50 % relative humidity at 40 °C.
Be aware that conducted and radiated electromagnetic emission may effect the EMC of
NOTICE
adjacent areas.
Be aware that improper earthing, false wiring and use of cable out of specification may
NOTICE
lead to instrument damage and/or disturbance of other sensitive electrical equipment due
to increased electromagnetic emissions/immunity.
Be aware that wrong input voltage may lead to disturbance of other sensitive electrical
NOTICE
equipment due to increased electromagnetic emissions.
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minal up to the stop.
The applicable national standards must be considered for installation.
Only sensors and transmitters with compatible MS codes may be interconnected. If
these instructions are not observed, flawless function of the flow meter cannot be
guaranteed.
In case of cabling in pipes (Conduit), guide the pipe through the opening in the wiring
and use water-tight seals to avoid that water runs in. Install the installation pipe at an
angle, as shown in the figure below. Install a drain valve in the bottom end of the ver-
tical pipe and regularly open that valve.
Unused cable entries must be closed using blind plugs.
Install cables hanging down to prevent water from flowing along the cable into the
flow meter.
The electrical connection between potential equalization system and grounding
connection must be safe, see Grounding connections and sensor circuits [} 31].
Ensure that housing gaskets are positioned in the lining grooves and not damaged.
IM01U10A00-00EN-R, 2nd edition, 2017-08-29
General wiring rules
Drain valve