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Emerson Process Management GmbH & Co. OHG 1-1
1
Techn. Description
X-STREAM XEFD
Instruction Manual
HASXEDE-IM-EX
03/2012
Chapter 1
Technical Description
1.1 Overview
The new X-STREAM ameproof gas analy-
zers are designed to be used in hazardous
areas. The flameproof enclosure can be
installed at Zone 1 and Division 2 locations
without the need of any additional protective
measures, e.g. purge gas supply.
1.2 Design Features
Packaged into a cast aluminum enclosure,
the X-STREAM XEFD gas analyzer provides
all the measurement options available for ge-
neral purpose instruments, but for installation
at locations, where explosive gas atmosphere
might be present frequently (Zone 1) or occa-
sionally (Zone 2, Division 2).
The basic concept used to protect the sur-
rounding atmosphere from being ignited, if an
internal failure results in high temperatures,
ames or even an explosion, is to keep the
explosion inside the enclosure and quench all
ames possibly passing through the ange.
To provide adequate explosion protection the
X-STREAM ameproof analyzer feature:
•
a cast aluminum enclosure, designed to
• withstand an internal explosion,
• quench ames resulting from an internal
explosion (thus preventing a surroun-
ding explosive atmoshere from being
ignited).
• ame arrestors avoiding ame transmissi-
on from the gas paths into the surrounding
atmosphere.
• approved cable glands (option: conduits),
protecting the cable inlets and outlets.
Fig. 1-1: Frontal View
1: Enclosure base
2: Screws
3: Enclosure cover
4: Flange
5: Eyebolts for lifting
6: Hinges
1
2
3
5
4
6