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48 of 66 Maintenance and Troubleshooting - 3654 Portable H2/N2 Analyzer
Operator Manual
ORBISPHERE
6.4 Purge Gas Cylinder Refill
The analyzer uses one of two types of purge gas:
•N
2
purge gas for H
2
measurements
•CO
2
purge gas for N
2
or H
2
measurements
You will need a model 32824A refilling hose to refill the purge gas cylinder.
CAUTION:
Only trained personnel should perform this filling operation. These persons should be
aware of safety procedures furnished by the storage gas supplier, and any applicable
regulations issued by local health and safety authorities.
6.4.1 N
2
Purge Gas
Fill the N
2
purge gas cylinder to a maximum of 200 bar from a master N
2
storage
cylinder, using fittings supplied with the analyzer.
CAUTION:
Although N
2
is not toxic, it is asphyxiating. Therefore, filling should be carried out in a
ventilated place and leaks should be avoided.
Note:
Do not attempt to refill the analyzer purge gas cylinder if the master N
2
storage cylinder
pressure is below 100 bar. When the master cylinder is below this pressure, refill or
replace the master cylinder.
Fig 6-1: Purge Gas Cylinder Refill
Always wear safety glasses and gloves when performing
any refill operation.