Emerson HASXEDE-IM-EX Welding Consumables User Manual


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Emerson Process Management GmbH & Co. OHG4-4
X-STREAM XEFD
Instruction Manual
HASXEDE-IM-EX
03/2012
4.1.1.3 Tests on Flame Arrestors
The following procedure describes how to
perform a leak test with the ame arrestor
installed at the instrument.
Required tools
•
Manometer for max. 7.25 psi (500 mbar)
• Stop valve
Maintenance is limited to performing visual
inspections, leak testing and pressure drop
tests on at least a regular basis. The time
interval has to be operator dened, conside-
ring operating conditions and composition of
supplied gases.
The ame arrestor is completely welded, no
inner parts are user accessible. Therefore
the ame arrestor has to be replaced by a
new one, if
- a re occurred on the ame arrestor
element
- the housing or the ttings show visible
mechanical damages
- contamination of inner elements is
detected (e.g. by pressure drop test)
-
the ame arrestor did not pass leak testing
4.1.1.3.1 Leak Testing
Procedure
• Connect the manometer to the analyzer‘s
sample gas outlet to the ame arrestor´s
outlet fitting (disconnect external gas
lines).
• Install the stop valve between gas inlet
tting and a Nitrogen (N
2
) supply.
• Open the stop valve until the internal gas
path is under pressure of approx. 0.725
psi/50 mbar (corresponding to approx.
19.7 inch/500 mm water column)
• Close the stop valve. After a short time
for the pressure to balance, the level must
not change over a time period of approx.
5 minutes!
When using a water lled u-tube
manometer prevent water from
entering backwards into the a-
me arrestor!
Don‘t exceed the maximum
pressure applicable to the ana-
lyzer as specied in it´s instruc-
tion manual!
EXPLOSION HAZARD AND GASES HAZARDOUS TO HEALTH
Maintaining the ame arrestor must be carried out considering all applicable
safety and legislative rules. Maintenance should be carried out by instructed
and trained personnel only!
Before opening gas paths they must be purged with safe air or neutral gas
(N
2
) to avoid hazards caused by toxic, ammable, explosive or harmful to
health sample gas components!
4.1 Verications and Tests
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