Installation and Start-Up | 3-21
Connecting I/O Signals, Alarm Relay Contacts, and AC Power
The analog input/output signals, alarm relay contacts, and AC power
requirements are specific to each analyzer installation.
Purged Analyzer (Hazardous Location) Applications
M25 x 1.5, 6H cable entries are provided for Power (1 entry) and
Signals (2 entries). See the Model 9xx-Series Analyzer Type 200
Disconnect Enclosure Details drawing in Appendix A for cable entry
locations. In all cases, all unused cable entry ports must be plugged
with a certified Ex d plug.
For Division 1/Zone 1 Installations, all cable entry glands (one
power cable entry and two signal cable entries) into the flameproof
Disconnect Enclosure must be Ex d certified. Conduit or cable seals
that comply with the flameproof enclosure cable entry sealing require-
ments of the local authority must be installed at the entries to the
disconnect enclosure.”
For Division 2/Zone 2 Installations that do not use the Disconnect
Enclosure, use a suitable cable entry device with a sealing ring that
meets the local requirements for entries into pressurized enclosures.
Purged Analyzer (Hazardous Location) Applications
Take extreme care to avoid damaging the threads on the cable entry
glands on the Disconnect Enclosure. Clean, defect-free threads are es-
sential to ensure a flameproof connection.
All electrical connections, materials, and methods (plus all safety poli-
cies and procedures) must be made in compliance with local wiring
regulations and electrical code for the hazardous area, and be approved
by the Owner Company.
Refer to “Electromagnetic Compatibility (EMC)” near the beginning
of this manual for information about the EMC Directive regarding
techniques and wiring practices to be followed.
To maintain EMC compliance in European installations, AMETEK
recommends using metallic glands and shielded cable (at least 85 %
coverage) for both power and signal cable connections.
!
WARNING
!
CAUTION
!
CAUTION
NOTE
To Next Page
Loading...
Need help?
General
