AX800 RGA
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Residual gas Analyser - Quadrupole Mass Spectrometer

The AX800 Series of computer integrated mass spectrometer systems can be configured to meet most gas analysis and process monitoring applications. With mass ranges up to 600 amu and a choice of detection systems the AX800 mass spectrometer may be supplied as an "add-on" to an existing vacuum system or as a complete stand alone unit with integrated vacuum and inlet systems. The AX800 mass spectrometer uses a PC computer as its system controller and its software is written in a high level language to simplify updating and to make it easier for customizing to meet specific process requirements. Color display and the flexibility offered by keyboard and mouse control of menu selection make the AX800 easy to use in all RGA and gas analysis application

Key Benefits

bulletHigh Precision
bulletWide choice of Mass ranges
bulletFast Scanning.
bulletEasy maintenance.
 

The AX800 Standard Analyser

 

The quadrupole analyser is available with a choice of ion sources, Mass filters and detection systems.

 The Ion Source.

The standard ion source is a radial symmetrical design with twin filaments. The semi-open construction makes it suitable for most applications. Thoria coated filaments to minimize  out gassing are available as an option. 

The Mass Filter.

The standard  mass filter is a 125mm long single filter with 6mm diameter cylindrical rods. A Triple filter version is available (See Modular Analyser below)

The Detector.

Choices of either Faraday only or dual Faraday/multiplier detectors are available.

The Mounting Flange.

Normally CF63 or ISO63 flange is fitted. The quadrupole assembly can be mounted on larger flanges if required.

 

The AX800 Modular Analyser (Option)

Analysis of low volatile samples and condensable vapours  may result in contamination of the analyser. This Analyser had been developed for quick removal and replacement of  both the ion source and mass filter greatly simplifying cleaning and maintenance.  If a spare ion source and mass filter are available then this simple procedure greatly reduces down time of the quadrupole system.

 

The Ion Source.

The Ion Source simply plugs into the top of the mass filter housing without the need to make electrical connections and therefore can be quickly changed.

The standard ion source is a radial symmetrical design with twin filaments. 

The Ion Source illustrated above is fitted with an axial gas inlet probe, twin filaments, source heater and temperature sensor. A radial aperture is provided for  molecular beams, or use of solids probe. The semi-open construction makes it suitable for most applications. Thoria coated filaments to minimize  out gassing are available as an option. 

Refer to the options page for additional Ion sources that are available.

 

 

 

The Mass Filter.

The mass filter plugs in to the housing without the need to make electrical connections and therefore can also be quickly changed. This is particularly useful for the triple filter version . The standard  mass filter is a 150 mm long single filter with 6mm diameter cylindrical rods. A Triple filter version is available.

The Detector.

Choices of either Faraday only or dual Faraday/multiplier detectors are available. The electron multiplier can be either Channeltron or discreet dynode type for continuous high output current monitoring.

The Mounting Flange.

Normally CF63 or ISO63 flange is fitted. The quadrupole assembly can be mounted on larger flanges if required.

 

 

The RF Head 

This compact unit contains the pre-amplifier and RF generation/control circuitry and plugs directly onto the analyzer to prevent signal degradation.   Choices of operating frequencies are available to give the best possible performance over the required mass range. The standard cable length is 2 metres but longer  cables  can be supplied if required.

 

The Control Unit.

The Control unit contains all the main power supplies for the instrument including the emission and filament control circuits and the Computer Interface Card that are housed in a 2U high 19inch rack module.

 

 

 

 

 

Technical Data.

Mass Range

1-50,1-100,1-200,2-300. (Other ranges available to 500amu)

Resolution

<10% valley between equal peaks.

Minimum detectable partial pressure

2x10-11mBar Faraday, 1x10-14mBar SEM

Minimum detectable total pressure

1 x 10-11 mBar. (If Fitted)

Maximum operating pressure

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

Electron energy

10-100eV

Ion Energy

2-20eV

Emission

100uA to 2mA *

Bake-out temperature

250C recommended. 350C maximum

R.F frequency

2.4 Mhz std. (options 1.2Mhz - 4.9Mhz)

R.F. amplitude

1250V p/p at maximum mass

Rod diameter

6.0 m.m.

Rod length

125 m.m. std. (175 m.m. for Triple filter)

Power requirements

105/115/220/240 volts 50/60Hz 80Watt

Software specification

Refer to separate Software Leaflet.

P.C .Computer required.

With 'Windows' Installed (up to windows XP)

Order Information. - Standard AX800 Residual Gas Analyzer.

 

Complete Instruments

AX800/100F

100amu RGA with Faraday Detector

 

AX800/100M

100amu RGA with Dual Detector

 

AX800/200M

200amu RGA with Dual Detector

 

AX800/300M

300amu RGA with Dual Detector

Spare Analyzer Heads

AX800/200F

100/200 Analyzer with Faraday Detector

 

AX800/200M

100/200 Analyzer with dual detector

 

AX800/300M

Analyzer with dual detector for 300amu.

Spare Filaments

AX800/FW

Pack of 4 tungsten

 

AX800/FT

Pack of 2 Thoria coated Iridium

 

Sample Spectra.

 

This Spectra was from a Standard AX800 Residual Gas Analyzer with a mass range of 1- 300 in SEM Mode.

Display range 40 to 100 amu

This Spectra was taken from a AX800 Modular fitted with a Triple filter. Low frequency RF Head giving a mass range up to 950amu. Faraday Detector on the 10-9mB range.

Display range 200 to 300 amu

The smaller peaks are residual hydrocarbons still visible at this mass. The larger peaks are from a PFK sample introduced via the inlet probe

 

 

 

 

Contact Information

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

All enquires:           angloscientific@live.co.uk