manufacturer:       GBC

model:                   SensAA Dual

annotation:           Dokumente engl.

Advanced features include

• Automatic wavelength and slit setting for maximum convenience and error-free set-up
• Optional automatic flame control system with a full range of safety interlocks and integrated liquid trap
• The unique GBC HYPER-PULSE background correction system, included as standard with all models
• The GBC performance guarantee – sensitivity and precision superior to that of any other instrument manufacturer
• Data storage using a high capacity hard disk. Storage is provided for applications, results graphics, sample labels, weights and dilutions, report headings, etc.
• Storage of signal graphics.

Since graphics traces are stored, the operator can view the graphics for previous samples and zoom in for a close-up if necessary

• Complete report presentation.

This includes printing of operator-defined text, headings, sample labels, calibration graphs, operating conditions, results and statistics

• Simple operation is ensured with the easy-to use Windows® XP environment, together with an extensive on-line help facility

No other AA spectrometer can offer the simplicity and user-friendly operation for your specific application.

GBC makes validation easy

The GBC IQ/OQ/PQ procedure provides qualification of the installation, operation and performance of your SensAA and SensAA Dual Atomic Absorption Spectrometer.

Specifications

Optics

Single beam (SensAA) or double beam (SensAA Dual) with background correction and flame emission capability. The SensAA Dual has asymmetric modulation with 2:1 sample-to-reference ratio for noise reduction. All-reflective system with quartz overcoating on mirrors. Dust cover over optical system.

Monochromator

Ebert-Fastie design with 333 mm focal length and 175-900 nm wavelength range. 1800 line/mm holographic grating with dual-blazed profile and 1.6 linear reciprocal dispersion. Automatic wavelength selection and peaking. Continuously adjustable slits with 0.1 to 2 nm spectral bandwidth (0.1 nm increments). Reduced height for furnace operation available with all slit widths. Automatic setting of slit width and height. Automatic scanning.

Selected wide range multi-alkali photomultiplier tube.

Choice of lamp types

Plug-in mounting for hollow cathode lamp or Application Source with vertical and horizontal adjustments for optimizing light throughput.

Lamp supply

Allows warm-up for next element using the Application Source.

Background correction

Hyper-Pulse background corrector takes 200 (50 Hz) or 240 (60 Hz) sample readings per second for correction of fast background peaks. With approximately 1 ms between pulses and interpolation between measurements, the best possible accuracy is assured. High intensity deuterium arc lamp provides 175 - 423 nm correction range. Corrects to 2.5 total absorbance.

Interlocked flame control

Flame ignition only on air based flames. Nitrous oxide ignition inhibited.

Push button actuated glow plug ignition system. Safety interlocks on burner, nebulizer, pressure relief bung and liquid trap. Safety interlock system also prevents nitrous oxide selection with air-acetylene burner. Fast change selection of nitrous oxide-acetylene flame.

Integrated liquid trap

The liquid trap is now integrated into the spray chamber to enhance the safety of the instrument.

Gas control module GCM (optional)

Microprocessor controlled. Monitors gas pressures, flame and safety interlocks. Keypress selection of air or nitrous oxide-acetylene flames with automatic fuel enrichment for nitrous oxide flames. Automatic flame shutdown upon mains power failure.

Flame atomization system

Premix design with solid polypropylene mixing chamber. All-titanium burner construction. Nebulizer has platinum­iridium capillary and titanium Venturi. Liquid trap with liquid level interlock. Quick-change mounting to enable easy changeover to graphite furnace.

Footprint

Minimum bench space of 455 mm x 810 mm is all that is required

Performance guarantee

Greater than 0.8 abs for 5 mg/L copper with an RSD less than 0.45% for ten 10-second integrations.

In-built computer

Touch screen interface computer incorporating Intel Pentium ^TM or AMD CPU technology. A minimum of 256 MB RAM, one parallel port, four USB ports, firewire port and a mimimum of 40 GB data storage capacity.

Software

Microsoft Windows®XP operating system for true multitasking.

Controls SensAA and SensAA Dual Plus AAS, SDS-270 autosampler, PS-270 auto-diluter, GF3000 graphite furnace and PAL3000 furnace autosampler, HSA3000 high solids analyzer and MC3000 mercury concentrator.

Data processing

Analysis by atomic absorption or emission. Absorbance range to 2.5. Measurement by integration, running mean, peak height or peak area. Mean and RSD of up to 50 replicate readings. Calibration using up to 10 standards. Curve correction by linear least squares, linear least squares through zero, exact fit or concentration least squares (polynomial), plus standard additions or bracketing standards. Programmable rescale using a single standard or complete recalibration. Result editing to remove unwanted readings. Weight and dilution correction. All editing available either during or post-run.

Graphics

High resolution display of atomic absorbance and background signals, furnace temperature programs, calibration curves, peaking meters and wavelength scans. Different scales may be used for atomic and background signals. Signals may be displayed in the single shot, overlay or overview mode. Consecutive signals may be overlaid. Graphics cursor may be used to obtain numerical information from graphics traces. Zoom function allows graphics traces to be expanded.

Data storage

Storage is provided for signal graphics, applications, results, sample labels, weights and dilutions, and report headers.

Quality

Quality control software satisfying GLP and GMP is supplied as standard.

Report generation

Reports may be printed during a run or from stored result files. They may include headings, notes, operating parameters, calibration graphs, sample labels, results and statistics. Results from different runs (e.g., flame, furnace and vapour generation) may be combined into a single report. Reports may be printed sequentially by element or in a multi-element format.

Dimensions

Spectrometer module: 830 x 580 x 520 (WxDxH, mm)

Weight

Spectrometer module: Unpacked 48 kg, Packed 60 kg.

Electrical Requirements

110/220/240 volts AC, 50/60 Hz, 300 VA.