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Technical Information
Maintenance: Filament Replacement
Agilent's nude gauges are equipped with dual filaments. The filament assembly is
easily replaced if it is damaged or broken. The replacement filament kit contains
two filament assemblies and an Allen wrench.
Tungsten Filament Replacement
This procedure replace the tungsten filament (Part No. 9710018).
To remove and change the damaged filament:
1
Carefully loosen all six set screws and pull the old filament support brackets
out.
Handle the gauge only by its ceramic base to prevent damage to the delicate
CAUTION
wires. Wear nylon gloves to prevent placing fingerprints on the gauge.
The oil from fingerprints extends pumpdown time.
2
Insert the long filament support bracket into its collar so that the filament is
located 0.050 to 0.070" from the grid structure.
3
Tighten the set screws.
4
Insert the short filament support brackets into their collars, pushing them in as
far as they will go before tightening the set screws. This ensures proper tension
on the filament.
24
Agilent UHV-24/UHV-24p Ionization Gauge User Manual
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