Agilent Technologies 7890A Troubleshooting Manual page 70

4
GC Not Ready Symptoms
The Measured Column Flow Does Not Equal the Displayed Flow
70
If the actual column flow does not match the calculated flow
displayed on the GC, do the following:
• Verify that the measured flows are corrected to 25 °C and
1 atmosphere.
• Verify that the correct column dimensions are configured
accurately, including the actual (trimmed) column length.
• The split vent line or trap may be partly plugged, creating
an actual inlet pressure higher than the setpoint pressure.
Troubleshooting