Catalog excerpts
Rugged Probe Design > The 100, 200 and 300 amu residual gas analyzers from SRSoffer exceptional performance and value. These RGAs provide detailed gas analysis of vacuum systems at about half the price of competitive models. Each RGAsystem comes complete with a quadrupole probe, electronics control unit (ECU), and a real-time Windows software package that is used for data acquisition and analysis, as well as probe control. The probe consists of an ionizer, quadrupole mass filter, and adetector. The simple design has a small number of parts which minimizes outgassing and reduces the chances of introducing impurities into your vacuum system. The probe assembly is rugged and mounts onto a standard 2.75 > " of clearance in your vacuumsystem > flange. It isenclosed within a stainless steel tube, with the exception of the ionizer which requires just 2.5 about that of a standard ion gauge. The probe isdesigned using self-aligning parts so it can easily be reassembled after cleaning. Compact Electronics Control Unit The densely packed ECU contains all the necessaryelectronics for controlling the RGAhead. It is powered by either an external +24 VDC (2.5 A) power supply or an optional, built-in power module which plugs into an AC outlet. LED indicators provide instant feedback on the status of the electron multiplier, filament, electronics system and the > (U.S. list)
Open the catalog to page 1probe. The ECU can easily be removed from the probe forhigh-temperature bakeouts. multi-channel, continuous-dynode electron multiplier (EM)offers increased longevity and stability, and can also be replaced by the user SRS RGAs have a built-in degassing feature. Using electronimpact desorption, the ion source is thoroughly cleaned, greatly reducing the ionizers contribution to background noise. Afirmware driven filament protection feature constantlymonitors (675 Hz) for over pressure. If over pressure is detected, the filament is immediately shut off, preserving its life.Aunique...
Open the catalog to page 2The software also allows complete RGAhead control witheasy mass scale tuning, sensitivity calibration, ionizer setup, and electron-multiplier gain adjustment. For further analysis, data files can be saved in ASCII format for easy transfer into spreadsheets. Graphic images can be saved as METAfiles or copied to the clipboard for importing directly into other Windows programs. The software also provides password protection for locking out head parameters so that casual users cant alter important settings. ALabVIEWdriver is also available on the SRS website.An optional stand-alone monitor...
Open the catalog to page 3Analog mode provides a line graphrepresentation of the acquired mass spectrum (partial pressure vs. mass number). Span, resolution and noise floor can each be set. Scans can be single-shot, timed or taken continuously. Pressure vs. time presents a strip chart ofpartial pressures for selected masses and provides a complete time history of your data. Complete scrolling and zoom control is available even while data is being acquired. This mode is most often used formonitoring process trends. Library mode contains a comprehensivelist of gases that can be used to compare against the current...
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