Emerson Process Management GmbH & Co. OHG1-2
X-STREAM X2FD
Instruction Manual
HASXMDE-IM-EX
01/2015
1.3 Protective Measures in Detail
The cast aluminum enclosure consists of
two parts: base and cover, connected by
hinges.
The area where the two parts are in contact
is designed to work as a fl ange, quenching
fl ames entering the small path between them.
When operated, the analyzer enclosure has to
be closed and secured by 20 screws evenly
arranged all over the fl ange. The only ope-
nings penetrating the enclosure are threads,
to be used for gas and cable in- and outlets:
Depending on the measurement application
the instrument provides up to 8 gas in- and
outlets, each protected by an approved fl ame
arrestor. These arrestors are installed into
threads at the bottom side of the enclosu-
re base. Two fi tting sizes are available for
external connection of gas pipes with 3,18
mm (1/8“) or 6,35 mm (1/4“) outer diameter
(OD). Optionally a clamping ring for 6 mm
OD may be used, replacing the 6,35 mm
version. Unused threads are closed with blind
plugs which are certfi ed within the emerson
approvals.
Cables are fed into the enclosure utilizing up
to 4 cable glands, located at the enclosure`s
bottom right side.
For installation in North America cable glands
are replaced by a combination of conduits and
metric-to-NPT thread adapters.
All threads are designed to act as a fl ame
path of a length ensuring that possibly
entering flames are quenched before
exiting to the external atmosphere. For
this reason, avoid to damage the threads,
neither externally nor internally!
Unused threads must be closed with plugs
when the instrument is operated to ensure
explosion protection.
Note!
See the X-STREAM X2 series instruction
manual for more information about common
X-STREAM X2 series gas analyzers features
and special features of the X-STREAM X2FD.
Fig. 1-2: Bottom view
1: Plugged when not used (plugs cer-
tifi ed by emerson)
2: Gas fi tting (part of fl ame arrestor)
3: Plug
1
234
1.3 Protective Measures in Detail
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