280 Maintaining Your GC
14 Maintaining the NPD
6
Remove the screws that secure the lid, and remove it. The
top metal C- ring and upper ceramic insulator may be
attached to the lid.
7 Remove the screws that secure the electrometer and the
interconnect.
8 Pull the electrometer away from the detector to free the
interconnect. Turn the electrometer to the right to obtain
working space. Be careful not to touch or bend the
spring. Be careful not to lose the EMI suppressor.
This step exposes the interconnect spring. Be careful not to touch or
disfigure the spring while working on the FID. Any dirt or bending
will reduce the sensitivity of your detector.
Wear clean, lint-free gloves to prevent contamination of parts with
dirt and skin oils.
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