Stanford Research Systems RGA100, Operating Manual And Programming Reference

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2 Appendix C
SRS Residual Gas Analyzer
Introduction
If you are planning to purchase an SRS RGA, or even if you already own one, you might want to consider
the addition of a PPM100 Partial Pressure Monitor to your vacuum setup.
The PPM100 was designed based on recommendations from vacuum users with a broad range of partial
pressure measurement requirements. The PPM100 is most suitable for RGA users who …
… require analog I/O capabilities.
… require process control capabilities.
… perform repetitive vacuum processes.
… demand high reliability (i.e. mission-critical applications.)
… need access to RGA data over the world wide web
… operate in process environments incompatible with PCs
… require uninterrupted 24/7 access to partial pressure data
… require a compact and mobile partial pressure measurement setup.
… prefer a traditional standalone RGA controller box over a PC.
… do not wish to deal with computers, software upgrades and system crashes
If any of the above requirements applies to you, please read the rest of this application note to familiarize
yourself with: (1) the main features and specifications of the PPM100 controller, (2) the advantages of
operating any SRS RGA with a stand-alone PPM100 controller (i.e. as compared to a PC/RGA Windows
interface), and (3) the cases in which RGA Windows is still recommended.