Troubleshooting Tasks 8
Agilent 7890 Series Troubleshooting 197
To Measure FID Leakage Current
1 Load the analytical method.
• Make sure flows are acceptable for ignition.
• Heat the detector to operating temperature or to 300 °C.
2 Turn off the FID flame.
3 Press [Front Det] or [Back Det], then scroll to Output.
4 Verify that the output is stable and < 1.0 pA.
If the output is unstable or > 1.0 pA, turn off the GC and
check for proper assembly of the upper FID parts and for
contamination. If the contamination is confined to the
detector, bakeout the FID.
5 Turn on the flame.
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