To Check The Npd Leakage Current - Agilent Technologies 8860 Maintaining

12 Maintaining the NPD

To Check the NPD Leakage Current

To Check the NPD Leakage Current

1 Load the analytical method.
2 Turn Off the Bead.
3 Show the detector output signal in Status.
4 Verify that the output (leakage current) is stable and < 2.0 pA.
Maintaining Your GC
• Leave the NPD at operating temperature
• Leave flows on or off
The output should slowly drop towards 0.0 pA, and should stabilize in the tenths of a
picoamp. Current > 2.0 pA indicates a problem.
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