Yokogawa ADMAG AXR - Manual (Page 25)

<4. WIRING>
4-1
IM 01E30D01-01EN
4. WIRING
This section describes the wiring of the integral
flowmeter.
WARNING
The wiring of the magnetic flowmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to wiring.
CAUTION
Once all wiring is complete, check the
connections before applying power to the
instrument. Improper arrangements or wiring
may cause a unit malfunction or damage.
4.1 Wiring Precautions
Be sure to observe the following precautions when
wiring:
CAUTION
• Do not connect cables outdoors in wet
weather in order to prevent damage from
condensation and to protect the insulation,
e.g. inside the terminal box of the flowmeter.
• All the cable ends must be provided with
round crimp-on terminals and be securely
wired.
• The cable must be routed in steel conduit
tube 16 (JIS C 8305) or flexible conduit
tubes 15 (JIS C 8309). Keep the conduits or
flexible tubes watertight using sealing tape.
• When waterproof glands or union equipped
waterproof glands are used, avoid tightening
the glands with an excessive torque.
• A plug is provided. Use this plug to cover
the unused wiring port when wiring the
instrument with only one.
• Be sure to turn the power off before opening
the terminal box cover.
• Before turning the power on, tighten the
terminal box cover securely.
• The terminal box cover is locked by the
special screw. In case of opening the
terminal box cover, use the hexagonal
wrench (nominal size 3). For handling the
locking screw, refer to Section 4.4 Wiring
Connection.
• Be sure to lock the cover by the special
screw using the hexagonal wrench (nominal
size 3) after installing the cover. For handling
the locking screw, refer to Section 4.4 Wiring
Connection.
• Explosion protected types must be wired in
accordance with specific requirement (and,
in certain countries, legal regulations) in
order to preserve the effectiveness of their
explosion protected features.