Emerson Process Management GmbH & Co. OHG4-4
X-STREAM Non-Incendive
Instruction Manual
HASXENE-IM-EX
12/2014
4.4 Checking Modifi ed or Repaired Analyzers
Modifi cations on non-incendive X-STREAM
gas analyzers which infl uence the integrity
of protection type or analyzer temperature
are permissible only, if the modifi ed analyzer
are inspected by a licensed test laboratory,
or if an authorized expert has evaluated the
modifi cations.
In case of repair infl uencing the protection
type, the repaired parts should be drawn to
suitable check routines and must be con-
trolled. These inspections need not necessa-
rily to be carried out by EMERSON Process
Management, but can also be performed by
local trained service personnel.
To run the test procedure, the following pre-
parations have to be encountered:
• Disconnect from power, or de-energize
the analyzer.
• Disconnect containment system fi ttings
from external gas pipes.
• Disconnect one containment system gas
fi tting inside the analyzer and close the
other fi tting.
Note:
Now it need to be possible to pressurize
the housing supplying an external gas
(e.g. compressed air) to the gas inlet.
• Supply compressed air from an external
source as described in Section 4.4.1.2 on
the following page.
Required Tools:
• Pressure gauge with a measuring range
of 50 to 100 mbar (0.7 to 1.5 psig; reso-
lution of 0.1 mbar/ 0.0015 psig).
•
Flow meter with a measuring range of 5 to
10 l/min;
resolution of
0.1 l/min.
• Span gas: Instrumental air or nitro-
gen; pressure reduced to 1.500 mbar
(22 psig).
• Pressure regulator to reduce pressure to
25 mbar (0.4 psig)
• Equipment for fl ow control
• 1 plug to shut off the gas outlet
(size: 6 mm /
1
⁄4“)
4.4 Checking Modifi ed or Repaired Analyzers
The compressed air must be
dry and free from dust, oil and
corrosive components!
Local regulations may require
to apply additional markings to
repaired equipment in hazar-
dous areas!
4.4.1 Enclosure Leakage Test
4.4.1.1 Preparation
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