<14. EXPLOSION PROTECTED TYPE INSTRUMENT>
14-2
IM 01E30D01-01EN
Enclosure: IP66/IP67
Process Temperature:
Maximum Surface
Temperature
Maximum Process
Temperature
Minimum Process
Temperature
T90°C (+194°F)
+70°C (+158°F)
–30°C (–22°F)
T110°C (+230°F)
+85°C (+185°F)
–30°C (–22°F)
T130°C (+266°F) +130°C (+266°F)
–30°C (–22°F)
Ambient Temp.: –30°C to +55°C
(–22°F to +131°F)
WARNING
If the AXR is mounted in an area where the use of
EPL Db equipment is required, it shall be installed
in such a way that the risk from electrostatic
discharges and propagating brush discharges
caused by rapid flow of dust is avoided.
(2) Electrical Connection
The type of electrical connection is stamped near
the electrical connection port according to the
following codes.
ISO M20x1.5 female
M
ANSI 1/2NPT female
N
F1401.ai
Screw Size
Marking
(3) Installation
WARNING
• Grounding resistance of 100 Ω or less is
necessary.
When optional code A is selected, grounding
resistance of 10 Ω or less shall be required.
•
All wiring shall comply with EN 60079-14, and local
installation requirements and local electrical code.
• In hazardous locations, the cable entry
devices shall be of a certified ATEX
flameproof type, suitable for the conditions of
use and correctly installed.
•
Unused apertures shall be closed with suitable
flameproof certified blanking elements. (The
plug attached is flameproof certified.)
• In order to prevent the grounding ring
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).
F1402.ai
1) Internal grounding
terminal
2) External grounding
terminal
Figure 14.1 Wiring Procedure for Grounding
Terminals
(4) Operation
WARNING
• After de-energizing, delay 5 minutes before
opening.
• Take care not to generate mechanical
spark when access to the instrument and
peripheral devices in hazardous locations.
(5) Maintenance and Repair
WARNING
Only personnel authorized by Yokogawa Electric
Corporation can repair the equipment.
WARNING
• 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
product.
• Modification of the flameproof joint is not
allowed.