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GENERON HPMB Series Membrane Nitrogen System
Operating and Maintenance Manual
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Section 9
Oxygen Analyzer
9.1 OXYGEN ANALYZER
The GENERON HP Nitrogen Generator is provided with a Fuel Cell type oxygen analyzer,
which is an integral part of the vent-and-shutdown control system.
9.2 CALIBRATION OF O2 ANALYZER
1. Supply calibration gas to the cabinet inlet.
2. Set 3-way valve (20-1) to “SPAN”. This allows the inlet calibration gas to flow through
the analyzer.
3. Adjust (FI 20-1) to a flow of 1 scfh and check that pressure reducing valve (PRV 20-1) is
set to 5 psig. Allow the meter reading to stabilize for several minutes.
4. To calibrate the O2 analyzer, see the oxygen analyzer manual.
5. Return 3-way valve (20-1) to “SAMPLE” position.
9.3 SET O2 ALARM POINT
To adjust the Oxygen alarm point:
1. See Setup Screen 2.
9.4 ROUTINE OPERATION OF O2 ANALYZER
Routine Operation of the analyzer includes regular calibrations and cell changes. The Fuel
cell has a nominal life of 0.5 - 1 year. Analyzer calibration should be performed every 4wo
weeks, or whenever abnormal performance is suspected. Check frequently, that the
pressure reducing valve (PRV-20-1) is set to 5 PSIG and the Flow Indicator to 1 SCFH. For
more details about the analyzer, refer to the analyzer instruction manual.