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X-STREAM X2FD
3.2
Performing a Leak Test
Before starting up the instrument, it appears
to be appropriate to perform a leak test, thus
ensuring the gas path system does not have
leaks, and to achieve best and proper measu-
ring results.
The following procedure describes how to per-
form a leak test with focus on the instrument.
The gas path system should be leak tested
at least on a bimonthly basis and after main-
tenance, replacement or repair of gas path
parts.
Note!
It is recommended to include external equip-
ment (e.g. cooler, dust fi lters, etc.) into a leak
test!
Required tools
U-turn manometer for max. 1.45 psi
(100 mbar)
Stop valve
Procedure
Connect the water fi lled u-turn manome-
ter to the analyzer's sample gas output
(disconnect external gas lines).
Install the stop valve between gas input
fi tting and a Nitrogen (N
Open the stop valve until the internal
gas path is under pressure of approx.
0.725 psi/50 mbar (corresponding to 19.7
inch/500 mm water column)
Close the stop valve. After a short time
for the water to balance, the water level
must not change over a time period of
approx. 5 minutes!
3-2
3.2 Leak Test
) supply.
2
HAZARD FROM GASES
Before opening gas paths
they must be purged with
ambient air or neutral
gas (N
caused by toxic, fl ammable,
explosive or harmful to
health sample gas compo-
nents!
Analyzer
stop
valve
Water
Fig. 3-1:
Leak Testing with U-turn Manometer
Max. pressure 7.25 psig
(500 mbar)!
Multi channel instruments:
Analyzers with parallel tubing
require separate leak tests for
each gas path !
Emerson Process Management GmbH & Co. OHG
Instruction Manual
HASXMDE-IM-EX
01/2015
) to avoid hazards
2
overpressure
approx.
0.725 psi /
50 mbar
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