Emerson Process Management GmbH & Co. OHG2-10
X-STREAM X2FD
Instruction Manual
HASXMDE-IM-EX
01/2015
POSSIBLE EXPLOSION HAZARD
Risk of internal overpressure under leakage conditions!
For the following option, take care to limit the total of purge gas fl ow and
highest fl ow of sample gas lines into the instrument to max. 2 l/min!
Take care of special conditions for safe use, and gas parameter specifi cations
(
S-5 and 1-10) !
2.4.1 Special Conditions
The purge medium must be supplied via a
separate fl ame arrestor (purge gas inlet),
installed into the analyzer enclosure. Another
fl ame arrestor must be installed, operating as
a breathing device (purge gas outlet).
Connection of breathing device:
The external output of the breathing device
(exhaust) can be open to the ambience of the
analyzer, if inert gas is used as purge medium.
If air is used, the output must end in a safe
area, if the measured gas concentration is
above
25 % V/V LEL.
2.4.1.1 Purging the Housing with Clean Gas when e.g. Measuring Low Concentrations
Fig. 2-7: Exemplary diagram for a single channel unit with purge option
1
2
3
1: Flame arrestors for gas path
2: Measuring system
3: Flame arrestors for purge gas in-/outlet
2.4 Installation - Gas Connections
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