Concentration Errors - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Concentration
Thermo Fisher Scientific
Low Concentration
Errors
System fail-safe
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Leaks
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Low or High Concentration
Improper cell temperature reading
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Improper cell pressure reading
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Instrument air issues
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Bad background file
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If any of the system components are not at their operating
temperature, then the temperature alarm is activated and the
system automatically switches to instrument zero mode. Check
temperature alarm or component temperatures.
Check Probe tubing for melted or cut sections.
Check for loose fittings.
Check for cold spots – ensure proper insulation at both ends of
the heated umbilical.
Check "Last Temperature" screen readout in 'Status' on
IMACC monitor software main screen; see 'Temperature
Errors'.
Check "Last Pressure" screen readout in 'Status' on Imacc
monitor software main screen; see 'Cell Pressure
Errors/Sampling System Errors'.
Check that instrument air regulator on side of rack reads at least
75 PSI.
Check that CO Free Air Gauge on pneumatic panel reads at
2
least 22 PSI.
Check that indicating filter on FTIR purge gas generator on
side of rack is green. If yellow, service purge gas generator and
filters.
Go to 'C:\Backgrounds\' in Windows Explorer and verify that
file 'C:\Backgrounds\BKG.spa' has been updated in the last 24
hours. Refer to Appendix E,
proper script configuration.
"IMACC Script Setting" for
Omni FTIR Multi Gas CEMS Instruction Manual
Troubleshooting

Concentration Errors

6-3