INFICON 3000 Micro GC Gas Analyzer Operating Manual User Manual
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3000 Micro GC Operating Manual
Poor sensitivity (continued) Impure carrier gas
Ensure the carrier gas purity is between
99.995% and 99.9995%.
Add hydrocarbon/moisture/oxygen traps or
particulate filters to the carrier gas line to
improve purity.
Internal leak
Contact
Malfunctioning column or
injector
Check the flow out of the analytical and
reference vents on the back of
3000 Micro GC. If there is no flow from either
or both vents, contact
Malfunctioning TCD
Contact
Flat line chromatogram
Inject Time set to 0 ms.
In EZ IQ, change the Inject Time to a value
other than 0 ms.
Sample Pump turned off
In EZ IQ, ensure that the Sample Pump
checkbox is selected and set for at least 15
seconds.
Malfunctioning column or
injector
Check the flow coming out of the
3000 Micro GC analytical and reference
vents. If there is no flow from either or both
vents, cont
Malfunctioning sample pump Listen for the noise from the pump when
taking a sample. If there is no noise, contact
.
Malfunctioning TCD
Contact
Missing peak
Backflush Time set too
early (if applicable)
Increase the Backflush Time until all peaks of
interest appear on the chromatogram.
Saturated peak
Inject Time too long
In EZ IQ, shorten the Inject Time.
Injector Temperature too
high
In EZ IQ, lower the Injector Temperature.
Detector Sensitivity set to
High
In EZ IQ, set the Detector Sensitivity to
Standard.
Table 9-1 Common chromatographic problems (continued)
Symptom
Possible Cause
Remedy