The AA500 Atomic Absorption Spectrometer is available in THREE configurations.
Flame Analysis Only (AA500F)
Graphite Furnace Only (AA500G)
Combined Flame and Furnace (AA500FG)
The AA500 is fully controlled by the embedded computer system and AA-Win Pro GLP Software. Three flame options are available to the user with the Air/Acetylene being the standard configuration. This flame can be used for nearly all standard elements while the N2O/Acetylene and the Air/LPG (Natural gas) are available as an option for the more demanding of elements. All three flame configurations offer coded burner for full safety protection.
Flame Atomiser Features
The flame atomiser offers three flame options:
Air/acetylene is the standard configuration with the N2O/acetylene and Air/LPG as options.
Air/Acetylene
- The Air/Acetylene flame uses a 100mm single slot burner for the standard configuration.
- The high sensitivity (Cu 2ppm >0.280abs) is due to the efficiency of the fixed position glass nebuliser fitted as standard. An acid resistant replacement is available as an option.
- The flame can be easily set from blue lean flame through stoichiometric to fuel rich by means of computer control.
N20/Acetylene
- The N2O/Acetylene flame uses a 50mm single slot burner and is available as an optional extra. (This burner is also known as the UNIVERSAL Burner.
- This flame configuration is used to measure elements less prone to ionization such as: Aluminium, Tin, Titanium, Calcium, Vanadium and Molybdenum.
- Switching from Air/Acetylene to N2O/Acetylene to Flame Off is fully controlled by the AAWinPro software.
Air/Propane (LPG)
- This flame uses a 3 slot burner and with the low pressure requirement it is also much safer to operate.
- Due to the low temperature of the flame it is ideal for analysing alkali metals such as: Potassium, Sodium and Lithium, especially when used in the emission mode.
- Some remote areas of the world have difficulty obtaining Acetylene gas of a high enough purity to operate the flame correctly, LPG can give a real alternative and offer comparable results for most elements throughout the wavelength range.
Safety Features
- Pressure monitoring for all gases.
- Burner Identification
- Flame sensor
- Drain Trap level Sensor
- Gas Leak Detector
- Over Pressure in Premix.
- Safety Cut off Switch.
Graphite Atomiser Features
- The integrated Graphite Furnace Atomiser has a temperature range up to 3000 Degrees Centigrade.
- The heating Program has an up to Nine Ramp Temperature program
- The graphite furnace head is fixed into the light path so alignment with the optical path is simple and accurate.
- The AA500 graphite furnace head is fixed behind the flame atomiser assembly and is motorised into position by a simple operation in the AAWinPro software. The positions for the flame and graphite are saved making it easy to swap between modes for different analysis.
PG Instruments Atomic Absorption Spectrophotometer
#Grup produk P111729162
Spesifikasi
| Atomization Chamber | Corrosion-resistant material |
|---|---|
| Background Correction | Deuterium Arc, Self reversal |
| Base Line Stability (Abs/30min) | 0.005 |
| Burner Head | Titanium Alloy |
| Characteristic Concentration | Cu < 0.02 μg/ml, Ba < 0.15 mg/ml (N2O/Acetylene) |
| Detection Limit | Cu < 0.004 μg/ml (flame); Cd < 0.4x10-12g (graphite furnace) |
| Monochromator | Czerny-Turner Configuration |
| Nebuliser | Inert Adjustable Nebuliser, Flow Rate from 2-6ml/min. Pt/Ir capillary available for high acid concentration |
| Position Adjustment | Automatic changeover (AA500GF) Manual (AA500F); Automatic Setting of Optimum Height for Flame Burner. |
| Repeatability (%) | Cu < 0.7 (Air/Acetylene flame); Ba < 1.0 (Nitrous oxide/Acetylene flame); Cu < 2.0; Cd < 2.0% (Graphite Furnace) |
| Safety Function | Burner Identification, Flame Sensor, Gas leak Sensor, Low Gas, Pressure Sensor, Drain Trap Sensor, Power Loss Protection, Circulation Water (graphite), Over Temperature Sensor (graphite) |
| Sensitivity (Cu) | 2 μg/ml Absorption > 0.28A (flame) |
| Spectral Bandwidth (nm) | 0.1, 0.2, 0.4, 1.0, 2.0 (software selectable). |
| Wavelength Accuracy (nm) | ± 0.15 |
| Wavelength Range (nm) | 185 to 910 |
| Wavelength Reproducibility (nm) | < 0.05 |
| Wavelength Resolution (nm) | 0.2 ±0.02 |
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Informasi Produk
Description
Feature
- The temperature of the transversely heated graphite tube is accurately controlled by means of a precision feedback system and has been designed to reduce analytical problems normally associated with this type of technique.- Pyrolytically coated graphite tubes are used as standard and are manufactured to improve performance as well as increase the analytical life.
- Platform graphite tubes are supplied as standard and will accept volumes up to 20µl. Non-platform graphite tubes are also available as an optional extra.
- Up to 10 heat stages are available for the programming of the graphite atomiser. These can be set and stored within the AAWinPro software.
- The graphite tube is held in position by means of a gas piston. Replacement of the graphite tube is performed by a simple command in the AAWin Software.
- The graphite tube is efficiently cooled by an additional water circulation system (supplied separately).
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