USER MANUAL | ICOS | INSTRUCTIONS | UM/ICOS-EN REV. B.2
Table 9 describes fault criteria for the Analyzer Alarms.
‘A’ refers to Laser 1 and ‘B’ refers to Laser 2. Not all analyzers are equipped
with 2 lasers.
Table 9: Fault Criteria for Analyzer Alarms
Data Health
The laser fitting condition is poor. Occurs when
fit is no longer working, peaks have been lost, or
Not within
Occurs when pressure is outside of the operating
Limited hard drive
Occurs when the internal hard drive has < 10% of
space left. Delete unnecessary data files.
Mirror Health
Mirrors have
declined in
Occurs when the ringdown time has degraded by
> 20% of the factory value. Mirror cleaning is
Peak is outside
Occurs when linelock control voltage is no longer
Signal Power
Signal power has
Occurs when laser signal power has degraded by
> 20% of the factory value.
Maintenance
Occurs when the analyzer requires maintenance
Data Health
The laser fitting condition is not optimal. Occurs
when residuals of fit go above normal operational
Occurs when the specified operational pressure is
Occurs when the internal hard drive has < 20%
Delete unnecessary data files.
Mirror Health
Mirrors have
declined in
Occurs when the ringdown time has degraded by
> 10% of the factory value.
Occurs when linelock control voltage is
approaching control range limit.
Signal Power
Signal power is
Occurs when laser signal power has degraded by
> 10% of the factory value.
Maintenance
Analyzer maintenance will be needed soon (every