BA02191C SS2100 TDLAS H
2
S Gas Analyzer
Endress+Hauser 3-5
The electrical power for the analyzer is connected through the conduit hub at
the lower right side of the electronics enclosure and the signal wiring is
connected through the upper left side of the enclosure. Refer to Appendix A for
system drawings.
Units with an enclosure heater will have an additional power connection
through a conduit hub located at the bottom right of the heated enclosure (see
“Connecting Electrical Power to the Enclosure Heater” on page 3-8).
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 are as follows:
• The 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.
• The protective and chassis grounds must remain connected until all
other wiring is removed.
• If the protective and chassis ground is insulated, it must use the
green/yellow color.
Hazardous voltage and risk of electric shock. Turn off and
lock out system power before opening the electronics enclosure
and making any connections.
Interconnection of the analyzer enclosure and cell enclosure shall
be accomplished using wiring methods approved for Class 1,
Division 2 hazardous locations as per the Canadian Electrical Code
(CEC) Appendix J and the National Electric Code (NEC) Article
501, or methods described in the Standard IEC/EN 60079-0 and
IEC/EN 60079-14. The installer is responsible for complying with
all local installation codes.
Careful consideration should be taken when grounding. Properly
ground the unit by connecting ground leads to protective
grounding found throughout the system and labeled with the
ground symbol .
The 120 VAC or 240 VAC power option is designed for single phase
electric power only. The single pole input fuse protection is not
designed for split phase electric power input.
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