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Emerson Process Management GmbH & Co. OHG 1-7
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
1.2.6.7 Optional Heated Area
The physical components can be optionally
separated from the electrical components
by means of a special box (not an option for
½ 19 in units). This can be done for one or
both of the following purposes:
Firstly, the box allows the physical compon-
ents to be regulated to a temperature of ap-
prox. 60°C, avoiding condensation of gases
or the inuence of varying environmental
temperatures.
Secondly, the box can be purged with, for
example, inert gas. The purge gas is rst fed
through a separate tting, purges the elec-
tronic components, then oods the box and
leaves the instrument via another tting.
Purging in this manner can be useful when
measuring very low concentrations (e.g. of
CO or CO
2
): the expulsion of ambient air
avoids adulterant outside inuences.
Alternatively, purging can be used to secure
enhanced protection for electronic parts and
operators from corrosive or toxic gases: any
leaking gas is expelled from the housing and
does not escape into the vicinity of the unit or
come into contact with any electronic compo-
nents located outside the box.
In either case, the purge gas outlet should be
connected to an exhaust gas line.
Fig. 1-2: Optional Heated Area
The gure shows the heated
area with the insulating cover
removed.
Insulating cover
Physical
components
(example)
Heated moun-
ting panel
Cable support for
signal wires
1.2 Conguration of Gas Lines
1
Technical Description