Maintenance & Troubleshooting
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5-9
Deposits can form at the entrance to the mass filter rods when they are operated
at high pressures or over a long period of time.
• Deposits can sometimes be seen as discolorations on the metal. In some
atmospheres, the rods might be coated with an invisible layer that will keep
the mass filter from operating properly. This will result in a loss of sensitiv-
ity over the full range of the spectrum. If the peaks disappear at high scan
speeds, an insulating layer may have developed on the surface of the rods.
• Unless the nature of these discolorations can be identified exactly, the only
sure way of removing them is with a fine abrasive.
• The entire quadrupole head assembly must be disassembled to clean the rods.
We recommend that the assembly be returned to the factory where the
rods can be cleaned properly.
closed source
NOTE
Figure 5-3.
ethernet lcd open
source.
Open Source
Barrel
Connectors
Detector
Flange
Assembly
Mass Filter
Repeller
Repeller
Source
Filament Post
1/10” Spacing
1/10” Spacing
Ceramic Collar
Focus Plate
