To Check The Fid Leakage Current - Agilent Technologies Agilent 7890 Series Maintenance Manual

11
Maintaining the FID

To Check the FID Leakage Current

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1 Load the analytical method.
• Make sure flows are acceptable for ignition.
• Heat the detector to operating temperature or 300 °C.
2 Turn off the FID flame.
Press [Front Detector] or [Back Detector], then scroll to
3
Output.
Verify that the output is stable and < 1.0 pA.
4
If the output is unstable or > 1.0 pA, turn off the GC and
check for proper assembly of the upper FID parts and
contamination. If this contamination is confined to the
detector, bakeout the FID. (See
page 229.)
Turn on the flame.
5
"To Bakeout the FID"
Maintaining Your GC
on