Accusys Flame & Furnace AA with Autosampler (211AAS)
The Accusys 211 AAS incorporates a series of sophisticated automatic functions and safety features into the high-sensitivity, interference-free design of Buck's unique “Stable-Beam” optical system. The proprietary non-Flame ignition system and automatic controls make the Accusys-series instruments the AAS of the new Millennium. Internal microprocessor and software can identify samples, perform statistical analysis and graphically display calibration curves and transient peaks (Hydride generation & Graphite furnace). Fully integrated safety interlocks for gas pressure sensors, burner head type, UV flame sensor, drain line trap and ignitor continuity insure safe operation of the 211 AAS.
- Unique non-flame ignitor provides the safest instrument start-up
- Simple 3 button operation for fully automatic gas controls, ignition and gas switchover (Air to Nitrous Oxide)
- Automatic optimization of analytical parameters when method files are loaded from the 211 built-in Methods Library
- Available autosampler, hydride generator and cold vapor attachments
|Wavelength Range:||190 to 900nm, Accuracy ± 0.2nm, Precision ± 0.1nm|
|Monochromator / Optics:||250mm Ebert mount, 600 lines/mm grating, 0.2-0.7-2.0nm bandpass|
|Hollow Cathode Lamp Supply:||Triple HCL power supply; 3 to 75 mA peak in NORMAL mode, 3 to 750mA in GIANT PULSE mode. |
|Background Correction:||Deuterium - In-Line (see-through) configuration, pulsed illumination, hot cathode, variable frequency, corrects from 190-350nm (0.7nm slit). Variable Giant Pulse - Self-reversing HCL currents up to 750 mA with pulse time from 10 to 200 microseconds, corrects from 190-900nm. The 205AAS Does not feature D2 Background correction|
|Burner / Nebulizer:||Polypropylene spray chamber with pre-mix burner and high efficiency adjustable nebulizers (SS), Titanium burner heads for Air/Acetylene, Argon/Hydrogen and Nitrous Oxide/Acetylene operation.|
|Microprocessor:||Computer control by 80C188 chip, 8/16 bit operation, 12/24 MHz clockspeed; non-volatile SRAM storage of >200 method files.|
|Integration / Response Range:||User selectable times from 0.5 to 10 seconds for continuous (flame) and transient (furnace, hydride) signals.|
|Calibration:||Automatic, weighted least squares fit to 1st, 2nd, 3rd, or 4th order functions, up to 8 points.|
|Display:||16-line backlit liquid crystal display for all text and graphics|
|Output Modes:||LCD display, IEEE-488 Parallel port for dot-matrix printer, RS-232 Serial port|
220 Graphite Furnace
The Model 220 GF accessory is for PPB level analyses by graphite furnace AA. This fully integrated design uses an innovative, unique technology in a compact powerful furnace module. The quick-mount design permits rapid changeover between furnace and flame heads
The unique power supply in the furnace is capable of generating temperatures up to 3000°C in less than a second! This ultra-fast heating rate provides superior sensitivity in refractory elements and carbide-forming metals. The on-board firmware gives the analytical chemist full control of all aspects of the analysis. Gas flows (external, internal, mini-internal and auxiliary are standard), data collection (integrated, real-time, peak height or absorbance area) and electronic parameters for the hollow cathode lamps and the various background correction routines can all be programmed by the operator for maximum results.
- Four (4) automatically controlled gas ports for sheath, internal, diluent, and auxiliary gas flows
- Maximum Temperature 3000°C
- Preprogrammed furnace temperature programs for all elements
- No external computer required for operation
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