Electrical Connections - Emerson Rosemount 370XA System Reference Manual

370XA Gas Chromatograph
APRIL 2014
NOTICE
Install the probe/regulator first, immediately followed by the coalescing filter and
then the membrane filter. See Appendix B for a recommended natural gas
installation.
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3.9

Electrical connections

WARNING
It is the responsibility of the end user to ensure that all wiring conforms to the local
electrical codes or regulations.
The 370XA has three cable entries for wiring. If you intend to run the
power and communications cables through a single entry, the lower
left entry is the most convenient. If you intend to run the power and
communication cables separately, the lower left entry is most
convenient for the power wiring, and the lower right entry is most
convenient for the communication wiring. The upper right cable entry
can be used if there is not enough space to run all of the wiring
through the two lower cable entries.
The cable entries are M32-threaded connections. If your gas
chromatograph is CSA-certified then a certified M32-to-¾-inch conduit
adapter and ¾-inch certified plugs will be shipped with your GC. If
Pressure Regulators and Flow Controllers
Use stainless steel wetted materials.
Should be rated for sample pressure and temperature.
Pipe Threads and Dressings
Use Teflon tape. Do not use pipe thread compounds (dope).
Valving
Install a block valve downstream of sample takeoff point for
maintenance and shutdown.
Block valve should be needle valve or cock valve type, of
proper material and packing, and rated for process line
pressure.
System Reference Manual
7P00370-H01
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