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Troubleshooting
3
Chromatographic Symptoms
Peaks Not Displayed/No Peaks
•
If using an autosampler:
•
Ensure that there is sample in the vial.
•
Verify that the ALS plunger carriage is secured to the
syringe plunger.
•
Check that the syringe is installed correctly and draws
sample.
•
Verify that the turret/tray is loaded correctly and
injections are not from out-of-sequence vials.
•
Watch to see that the sample is pulled into the syringe.
•
Verify the detector in use is assigned to a signal.
•
Check the column for proper installation.
•
Ensure that the column is not plugged. (See “To Measure a
Column Flow” .) Perform column maintenance.
•
Check for leaks. (See “Checking for Leaks” .)
•
Check the flow settings, then measure the actual detector
flows. (See “To Measure a Detector Flow” .)
If the problem is with the detector, see Table 1.
Table 1
Detector troubleshooting
Detector
Solution
FID, FPD
•
Verify that the electrometer is turned on.
•
Verify that the flame is still lit.
TCD
•
Verify that the filament is turned on.
•
Ensure that the reference gas is not set to zero.
NPD, uECD
Verify that the electrometer is turned on.
Summary of Contents for 6890N
Page 1: ...Agilent Technologies Agilent 6890N Gas Chromatograph Troubleshooting ...
Page 20: ...20 Troubleshooting 2 Hardware Symptoms ...
Page 76: ...76 Troubleshooting 6 Nonfunctional GC Symptoms ...
Page 88: ...88 Troubleshooting 8 Troubleshooting Tasks ...
Page 102: ...102 Troubleshooting 8 Troubleshooting Tasks ...