Product Introduction:
The graphite furnace atomic absorption spectrometer uses concave mirrors instead of convex lenses, effectively solving the problem of color difference caused by different focal points of different elements and improving optical conversion efficiency.
Performance characteristics:
1. Integrated total reflection achromatic optical system
The use of concave mirrors instead of convex lenses as optical focusing devices effectively solves the problem of chromatic aberration caused by different focal points of different elements and improves the efficiency of the optical system.
2. C-T type monochromator
Adopting a 1800 line/mm grating splitting system with a dazzling wavelength of 230nm.
3. Eight Element Lighthouse
Working with one lamp, up to seven lamps can be preheated, saving time for lamp replacement and preheating, making element measurement faster and more convenient.
4. Fully automated design
Except for the power switch of the host, all functions of the instrument are monitored and controlled by a computer.
5. USB 3.0 communication method
The industry is the first to adopt USB 3.0 communication interface, which improves communication speed and is compatible with the latest computer systems.
6. Background correction system
Equipped with two background correction modes, deuterium lamp and self absorption, with a background signal of 1A, it has a background correction ability of more than 30 times.
7. The appearance adopts streamlined sheet metal process design, simple and fashionable, beautiful and generous.
8. Independent intellectual property rights, complete functions, and powerful analysis software performance. Humanized operation interface makes your operation easy. It can switch between Chinese and English Windows style software interfaces and run perfectly on operating systems such as Windows XP and Windows 7. It automatically performs qualitative and quantitative analysis, calculates element content, and generates test reports.
Graphite furnace system:
1. Integrated design
The graphite furnace power supply and atomic absorption host are located in one instrument, which shortens the cable length, reduces the electromagnetic interference of the graphite furnace power supply to the outside world, and improves the heating efficiency of the graphite tube.
2. Graphite furnace has high temperature control accuracy and fast heating speed
By using high-power transformers, micro resistor cables, and light controlled heating methods, combined with software and hardware temperature correction systems, the temperature control accuracy in the high temperature section can reach ± 1%.
3. More security measures to make sample analysis safer and more reliable
1) Cooling water flow monitoring
2) Monitoring of carrier gas pressure
3) Graphite tube temperature monitoring
4) Graphite furnace temperature monitoring
4. Automatic carrier gas flow control
The internal and external gases of the graphite furnace are all automatically controlled by the computer according to the software heating process.
5. 150 position rotary graphite furnace automatic sampler
The polar coordinate rotary table graphite furnace automatic sampler has high positioning accuracy, stable and reliable operation, and easy use and maintenance.
Technical indicators:
Wavelength range: 185nm~900nm Automatic peak finding setting Monochromator type: Czerny Turner type
Spectral bandwidth: 0.1/0.2/0.4/0.7/1.4 nm with five automatic switching modes
Grating flicker wavelength: 230nm
Grating engraving line: 1800 lines/mm
Wavelength accuracy: ≤± 0.2nm
Wavelength repeatability:<0.10nm
Resolution: better than 0.3nm
Static baseline stability: 0.003 Abs (static)
Deuterium lamp background correction capability: over 60 times
Graphite furnace temperature control range: room temperature -3000 ℃
Graphite furnace heating rate: 3000 ℃/s
Precision of graphite furnace cadmium (Cd) measurement: ≤ 2%
Graphite furnace cadmium (Cd) characteristic quantity: ≤ 0.5pg
Graphite furnace detection limit for cadmium (Cd): ≤ 1pg
Power supply: 220V ± 22V, 50Hz ± 1Hz, 5kW (peak)
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