Emerson Process Management GmbH & Co. OHG
2-10
X-STREAM XEFD
Instruction Manual
HASXEDE-IM-EX
07/2017
The gas paths need additionally to be
protected by suitable external inline flame
arrestors, designed and approved for the in-
stallation area and for the applied higher gas
pressure (above 1100 hPa to max. 1500 hPa;
see gas parameter specification
1-16
).
These inline flame arrestors need to be in
-
stalled outside the analyzer and in addition
to the flame arrestors provided with analyzer.
Note!
The external inline flame arrestors are not
subject of the analyzer certification and may
be provided by the customer, or optionally by
EMERSON.
A separate analyzer flame arrestor has to be
installed, operating as a breathing device,
limiting the internal pressure rise in case of
gas path leakage.
Connection of breathing device:
The external output of the breathing device (ex
-
haust) may be open to the ambient of the analyz
-
er, if the measured gas concentration is below
25 % V/V LEL. Otherwise it must end in a
safe area.
2.4.1.3 High Sample and Calibration Gas Pressures
2.4.1.4 Fastening Torques for Enclosure Components
1
4
2
3
1: Flame arrestors for gas path
2: Containment system (measuring device)
3: Flame arrestor as breathing device
4: External flame arrestors, approved
for higher pressure
Fig. 2-8:
Exemplary diagram for a single channel
instrument for high gas pressure
Fig. 2-9:
Label with fastening
torques, installed at the instrument
Consider the permitted fastening torques,
when installing components to the enclosure,
as given on a label at the instrument!
2.4 Installation – Gas Connections
