Replacement Procedures; Software; Replacing The Entire Detector - Agilent Technologies 6890 Series Service Manual

320 Nitrogen Phosphorus Detector (NPD)

Replacement procedures

Replacement procedures

Software

Important changes were made to the original NPD software/firmware to
improve bead life. If the GC or ChemStation has older software, upgrade it as
shown here.
Product
6890A GC
GC ChemStation
MSD ChemStation
Software/firmware with numbers less than shown in the table will cause
reduced bead lifetime.

Replacing the entire detector

WARNING Before proceeding, turn off the oven and any heated zones and let them cool
down. Turn off any detector gases at their supply. Then turn off the main
power switch and unplug the power cord. Remove the side mainframe side
panel by loosening the two T-20 captive screws.
1. Shut off the detector and the detector gases and let the detector cool.
2. Remove the right side mainframe panel by loosening the two Torx T-20
captive screws.
3. Disconnect the column and insulation cup from the bottom of the
detector.
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Software/firmware revision
A.03.03 or higher
A.05.02 or higher
G1701AA or higher
Detectors
Agilent 6890 Gas Chromatograph Service Manual
Jun 2001