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Residual Gas Analyser

The AX-200 Residual gas Analyser can be configured to meet most gas analysis and process monitoring applications. With mass ranges up to 200amu and a choice of detector systems the AX-200 may be supplied as an "add on" to an existing vacuum system or as a complete stand alone unit with integrated vacuum and inlet system. The AX-200 Residual gas Analyser uses a PC Computer as its system controller and its operating software is written in a high level language. This simplifies updating, and allows easy customising to meet specific process requirements. The user-friendly software operating under 'Windows' make the AX-200 easy to use in all RGA and gas analysis applications.

Key Benefits

bulletLow Cost
bulletSmall Size
bulletSimple to use
bulletComprehensive Software.

Complete Residual gas Analyser.

The Analyser.>

The quadrupole analyser is available with a choice of ion sources, mass filters and detection systems. The standard ion source is a radially symmetrical design fitted with twin filaments and suits most applications. The standard filaments are tungsten but thoria coated iridium are available if required.

 ^The Electronics Unit.

This compact Residual gas Analyser contains the complete quadrupole electronics that plugs directly onto the analyser. Communication with the PC Computer is via the RS232.

The unit has a performance and features only found on more expensive Residual gas Analysers, and yet its small size and low cost is achieved by the use of the very latest electronic techniques.

Software features

The new 'Windows' RGA software for the AX-200 Residual Gas Analyzer mass spectrometer has been designed to be 'user friendly' and very simple to learn and use. For detailed information refer to the separate software leaflet.


Technical Data.

Mass Range

1-100 or 1-200 std. (Lower mass options available)


10% valley between equal peaks.

Minimum detectable partial pressure

2x10-11mBar Faraday, 5x10-14mBar SEM

Minimum detectable total pressure

1 x 10-11 mBar.

Maximum operating pressure

1x10-4mBar Faraday, 1x10-5mBar SEM

Electron energy


Ion Energy



1 mA *

Bake-out temperature

250C recommended. 350C maximum

R.F frequency

1.84Mhz std.(options 1.6Mhz - 4.9Mhz)

R.F. amplitude

800V p/p at maximum mass

Rod diameter

6.35 m.m.

Rod length

100 m.m. std.

Power requirements

17-26VDC 15Watt

Software specification

Refer to separate Software Leaflet.

P.C .Computer required.

486/66 minimum. Pentium preferred.

Order Information. - AX-200 Residual gas Analyser.


Complete Instruments


100amu RGA with Faraday Detector



100amu RGA with Dual Detector



200amu RGA with Dual Detector

Spare Analyzer Heads


100/200 Analyzer with Faraday Detector



100/200 Analyzer with dual detector

Spare Filaments


Pack of 4 tungsten



Pack of 2 Thoria coated Iridium


Electronics unit 6 x 3 x 3.5 inches (152 x 76 x 88mm)




Contact Information

+44 (0)1805 625 205
Postal address
  Anglo Scientific Instruments,
  3, Devon Units, Hatchmoor Industrial Estate,
            Torrington, Devon. EX38 7HP. UK.
Electronic mail

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