Firma:              Varian

Modell:            Ultra Mass

Kommentar:   Dokumente engl.

Specifications

Specifications                                           Sample Introduction

Quadrupole mass spectrometer                    Assembly

Three stage differential vacuum pumping            Siting                        Externally mounted

Vacuum                                                         Nebulizer                  Glass concentric

Two rotary pumps                                            Spray chamber          Inert "Sturman-Masters"

Two water cooled turbo molecular pumps           Torch                        Low flow, low power

Twin cold cathode and twin thermocouple         Nebulizer flow            Mass flow controller adjusted by computer

gauges                                                           Plasma gas               "Hammer" gas,computer-controlled

Startup/shutdown under computer control         Auxiliary gas             "Hammer" gas,computer-controlled

Quadrupole assembly                                   Peristaltic pump        4 channel, 10 rollers, 0-50 rpm

One assembly with ion lenses, quadrupole                                       computer-controlled

and ion detector mounted an one vacuum

flange                                                             RF generator

Ion lenses                                                      Operating frequency 40.68 MHz

All ion lenses under computer control                Generator type          Crystal controlled, solid state,

Detector                                                                                       water-cooled

Discrete dynode electron multiplier                    RF Coils                   "Turner" interlaced coils assembly

                                                                     Positioning                Plasma torch and coils, X, Y, Z , "Scout" protection prior to measurement                                                                                 position, under computer control

Software and hardware protection during

analysis                                                          RF power

Mass range                                                    Type                         Dual autotune impedance matchin

3-256 amu                                                                                     network

Resolution                                                     Efficiency                  90%

0.5-1.5 amu under computer control                  Computer control       0-1.6 kW in 0.1 kW increments

(5% peak maximum)                                        Plasma ignition          Low stress pretuned

Power requirements                                     system

3 phase star (WUE) configuration                      Interlocks                  Programmab.logic device,incl. gate

380/400/415/460/480 VAC                                                              valve water,argon,plasma compart.

± 5% (line to line) 50/60 Hz ± 1 Hz                                                   door, vacuum system

220/230/240/265/277 VAC                                Accessories/options

± 5% (line to neutral) 50/60 Hz ± 1 Hz

Rated current 11.2 amps per phase.                  SPS-5 autosampler    Up to 5 racks of any user defined

The instrument may be connected to                                               configuration

North American three phase delta 208 VAC       Rack types               Type 10 (10 mL x 100 positions)

supply by using a step-up auto                                                        Type 25 (25 mL x 60 positions)

transformer.                                                                                   Type 50 (50 mL x 35 positions)

Operating conditions                                                                   Type A (125 mL x 12 positions)

From 18 to 22 °C (64 to 72 °F)                                                         Type B (500 mL x 6 positions)

From 50 to 60% relative humidity                      VGA-77P                  Vapor generator for impr. detection

(non-condensing)                                                                           limits for As,Bi,Ge,Se,Sb,Sn,Te,Hg

Storage conditions

From 5 to 45 °C (41 to 113 °F)                          USN                         Ultrasonic nebulizer for improved

From 20 to 80% relative humidity                                                     detection limits

(non-condensing)                                             "V" groove nebuli.   Inert nebulizer suitable for

Instrument weight                                                                        HF, fusions, etc.

530 kg (unpacked)                                           Demountable torch Alumina or quartz injector tube

Instrument dimensions                                  Cones                      Nickel or platinum sampler and

1640 mm (65") wide, 800 mm (32") deep                                          skimmer cones

and 1210 mm (48") high.                                  Compute r                 IBM or compatible, 486DX or .                       higher,33 MHz or higher, RAM 12 .                                                                        Mbytes or more, hard disk 200 .                    Mbytes or more

                                                                     Operating system    OS/2 multi-tasking environment

Accessories

A range of accessories is available to provide a fully automated System capable of unattended operation. The SPS-5 Sample Preparation System has up to 500 tube positions, which can be used in conjunction with the other accessories which provide conventional nebulization, ultrasonic nebulization or hydride generation. Various rack combinations are available for a range of sample volumes, ensuring maximum flexibility for fully automated analyses.

Serviceability and remote diagnostics

UltraMass has been designed to allow quick and easy access to components for routine maintenance.

TeleDiagnostics TM provides facilities for the remote examination of results data files, analytical methods and error log data files. This minimises support call time, in turn reducing maintenance costs. Extra services, such as assistance with analytical methods also become available by remote communication.

Multi-Tasking software

Software

UltraMass uses the IBM OS/2 TM graphical user interface operating system. This provides full multi-tasking capabilities even allowing third party software to run concurrently. You can develop a method while an automated analytical procedure is proceeding. You can also monitor results, peak shapes and mass spectra scans at the same time. This greatly enhances your productivity, minimizing the time you spend waiting for the computer to complete a task.

Total computer control

All instrument parameters are centrally controlled by the computer. Analytical methods can be developed for individual applications and used in an automated analysis with any other developed methods for optimal results. Individual analytical methods may include different measure­ment modes and conditions for RF power, plasma gases, sampling depth and ion optics settings.

Quality Control Protocols

Full Quality Control Protocols (QCP) to cover anticipated US EPA requirements are built into the UltraMass software. You can choose QCP parameters and definable limits, ensuring maximum flexibility. In-run monitoring of analytical performance is achieved by the multiple windows facility of the OS/2 operating system. This can simultaneously display any of the following:

q          Full mass spectra

q          Zoomed regions for peak shape monitoring

q          Analytical results with statistics

q          `Live" continuous plotting of ion count rates for up to five selected species, or ratios.

A global picture of instrument status can be obtained in seconds, without moving from the computer.

Results editing facilities are available, together with customized printed results capabilities. Downloading of results after inspection of their quality integrity is easily achieved with the exporting facility, which includes filters to simplify data interpretation after downloading.

Automation wich confidence

All samples are subjected to "Scout"; a unique reconnaissance scan performed prior to analysis. This prevents damage to the detector by unforeseen high signals. "Scout" also improves productivity by eliminating the need for screening of unknown samples by other techniques such as ICP-AES or AAS.

Safe Operation

All instrument parameters are controlled by the computer. A programmable logic device is built into the instrument hardware, acting as a watchdog. All instructions are interrogated for safety and validity, providing an additional level of protection for you and the instrument.

Sample introduction

The external sample introduction assembly provides a stable environment for the spray chamber and nebulizer, unaffected by the temperature in the torch compartment. Easy access is provided for all components and accessories to allow rapid interchange. The inert Sturman-Masters spray chamber can be fitted with either a concentric glass nebulizer or an inert V-groove nebulizer. Both are an efficient means of producing an aerosol with very fine droplets, required to achieve the best signal and stability, while providing fast washout times. A four-channel, computer controlled peristaltic pump is standard, for versatility in sample presentation, including internal standard introduction.

Torch compartment

The plasma torch and the patented "Turner" interlaced induction coils assembly are mounted on a computer-controlled X, Y, Z plane translation assembly for accurate and reproducible positioning of the plasma. The "Turner" interlaced induction coils were specifically designed for ICP-MS. They contribute substantially to the efficient coupling of power into the plasma. This reduces interferences and improves the performance for organic samples. The torch compartment provides easy access to all components, including the interface between the plasma and the mass spectrometer. This will reduce the time spent on routine maintenance.

Power generation

The power for the plasma is generated by a computer-controlled, solid state, water-cooled RF generator, operating at the industry standard of 40.68 MHz. The UltraMass" coupling of the RF power into the plasma gives a measured efficiency of 90% - the highest yet reported for any ICP system. This high efficiency gives superb performance with organics, prolongs the life of components and contributes to the stability of results.

Vacuum system

The Varian turbomolecular and rotary pumps used in the UltraMass are computer controlled for simple, reliable start-up and shutdown. They are easily accessed for routine maintenance.

Mass spectrometer

The Varian-manufactured unit consisting of ion lens stack, quadrupole mass filter and detector assembly, can be removed and replaced easily by a trained person. This permits fast and easy cleaning of the ion lenses, ensuring good routine performance and improved productivity.