<10. EXPLOSION PROTECTED TYPE INSTRUMENT>
10-3
IM 01F06F00-01EN
(2) Installation
WARNING
• Take care the following warning marking.
”POTENTIAL ELECTROSTATIC
CHARGING HAZARD”
• Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• All wiring shall comply with IEC 60079-14,
and local electric codes and requirements.
• In cases where the process temperature
exceeds 200 °C, use external heat resistant
cable and cable gland with a maximum
allowable temperature of 90 °C or above.
• In case of Flameproof, Cable glands and/or
adapters with a suitable temperature rating
shall be of Ex db certified by ATEX.
• In case of Intrinsically Safe Ex ic, Cable
glands and/or adapters with a suitable
temperature rating shall be of Ex “n”, Ex “e”,
or Ex “d” certified by ATEX.
• Cable glands and adapters shall be installed
so as to maintain the specified degree of
protection (IP Code) of the flowmeter.
• In order to prevent the earthing conductor
from loosening, the conductor must be
secured to the terminal, tightening the screw
with appropriate torque. Care must be taken
not to twist the conductor.
The grounding terminals are located on the inside
and outside of the terminal area.
Connect the cable to grounding terminal in
accordance with wiring procedure (1) or (2).
Case
Cable
Screw
(1) Internal grounding terminal
(2) External grounding terminal
Washer
Washer
Cable
Clamp
Screw
F1001.ai
Figure 10.1 Wiring Procedure for Grounding
Terminals for Flameproof
(3) Operation
WARNING
• Take care the following warning marking.
”POTENTIAL ELECTROSTATIC
CHARGING HAZARD”
• Electrostatic charge may cause an explosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• Take care not to generate mechanical spark
when access to the equipment and the
peripheral devices in hazardous locations.
• In case of Flameproof, take care the
following warning marking when opening the
cover.
“AFTER DE-ENERGIZING, DELAY 3
MINUTES BEFORE OPENING”
(4) Maintenance and Repair
WARNING
When maintenance and repair are performed,
confirm the following conditions and the then
perform works.
Confirm the power supply is cut off and the
voltage of power supply terminal is not supplied.
Only personnel authorized by Yokogawa
Electric Corporation can repair the equipment
in accordance with the relevant standards:
EN 60079-19 (Equipment repair, overhaul
and reclamation) and EN 60079-17 (Electrical
installation inspection and maintenance).
