Stanford Research Systems RGA100, Operating Manual And Programming Reference

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8-10 Ionizer Replacement
SRS Residual Gas Analyzer
16. Attach the new repeller to the longer filament rod using a fresh screw. Align the cage
and tighten the screw (Correct alignment is best assured when the two small holes on
the side of the repeller cage line up with the filament screws.)
17. Inspect visually the entire ionizer assembly to assure the correct alignment of its
parts, and, if satisfied, mount the probe back on the vacuum system. Check the
correct rotational orientation of the feedtrhu flange (i.e. same as it was before
disassembly) before tightening the flange bolts.
18. A bakeout of the probe is highly recommended before operating the RGA again.
19. Retune the sensitivity of the RGA, following the instructions in the RGA Tuning
chapter, before using the unit for quantitative measurements.