XA02751C
2-Pack/3-Pack TDLAS Gas Analyzer
12
Hauser
Electrical Wiring
External circuit breaker requirements
Protective chassis and ground connections
Before connecting any electrical signal or power, the protective and chassis
grounds must be connected. Requirements for the protective and chassis
grounds include the following:
•
Protective and chassis grounds must be of equal or greater size than
any other current-carrying conductors, including the heater located in
the sample conditioning system
•
Protective and chassis grounds to remain connected until all other wir
-
ing is removed
•
Insulated protective and chassis ground wiring must use the green/yel
-
low color
•
Protective grounding wire current carrying capacity must be, at mini
-
mum, the same as the main supply
•
Earth bonding/chassis ground shall be at least 4 mm
2
(12 AWG)
Interconnection of the analyzer enclosure and cell enclosure
shall be performed using wiring methods approved for Class
I, Division 2 or Zone 2 hazardous locations per the Canadian
Electrical Code (CEC) Appendix B or J and the National
Electric Code (NEC) Article 501 or 505. The installer is
responsible for complying with all local installation codes.
Use copper conductors only.
An approved switch or circuit breaker rated for 15 amps
should be used and clearly marked as the disconnecting
device for the analyzer.
If the breaker in the customer-provided power distribution
panel or switch is the primary means of disconnecting the
power from the analyzer, Hauser recommends that
the power distribution panel be located in close proximity to
the equipment and within easy reach of the operator.
A switch or circuit breaker must not interrupt a protective
earth conductor.
Thread lubricant must be applied on all conduit hub threaded
connections. Hauser recommends using STL8
lubricant on all conduit screw thread and it’s taped openings.
Summary of Contents for 2-Pack TDLAS
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