Product Catagory
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Rayleigh WFX-320 Atomic Absorption Spectrophotometer
back to Spectrometers & Spectrophotometers
FEATURES
- High sensitivity, simple and safe operation, low analytical
cost, ensured by the patented flame analysis technique (patent No.
ZL9210560.7) adopting oxygen-rich air-acetylene flame as the substitution for
nitrous oxide-acetylene flame for high temperature element analyses. The flame
temperature of the oxygen-rich flame is adjustable continuously between
2300 and 2950°.
- Fully automated microcomputer controlled operation
1.
Automatic wavelength peaking for quick and precise operation.
2. Automatic
spectral bandwidth selection.
3. Automatic hollow cathode lamp
changeover.
4. Automatic instrument parameter setting, including light source
power supply, photomultiplier high voltage supply and background correction
energy balance.
5. Automatic signal measurement and data processing. Fast
sampling, photo-electric conversion, noise smoothing, integration, curve
fitting, background correction and data display can all be done automatically.
- Easy and flexible WINDOWS operating system, with
multi-windows processing technology to observe the signal profile, the measured
results and the calibration curve at the same time. Various analytical
programs, data, signals and graphics can all be stored for later use.
- Fully sealed optical system, keeping the optical elements
clean and dry and ensuring long-term high-energy throughput.
- Optimum vibration-absorbing mechanism, ensuring good
mechanical stability of the optical system, reducing vibration interference in
graphite furnace operation.
- Two background correction systems, deuterium arc background
correction system (with high performance deuterium arc lamp) and S-H background
correction system (only for WFX-110/120) to realize background correction at all
wavelengths.
- Perfect safety protection measures, alarm and automatic
safety protection to fuel gas leakage, air pressure deficiency and abnormal
flame extinction; spray chamber made of explosion-proof material, all-titanium
burner and explosion-proof stopper for flame analyses; alarm and protection
function to argon pressure deficiency, insufficient cooling water supply,
over-heating and over-current etc. in graphite furnace analyses.
- Multi-analytical functions, providing flame AA, graphite
furnace AA, and hydride AA analysis and flame emission analysis.
SPECIFICATIONS:
Main Specification
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Wavelength range
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190-900nm
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Wavelength accuracy
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±0.5nm |
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Resolution
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Two spectral lines of Mn at 279.5nm and 279.8nm can be separated with the
spectral bandwidth of 0.2nm and valley-peak energy ratio less than 30%.
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Baseline stability
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0.005A/30min
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Background correction
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The D2 lamp background correction capability at 1A is better than 30
times.
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Light Source System
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Lamp number
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2 lamps (one preheating)
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Lamp current adjustment
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Micro-computer control
Adjustment range: 0~20mA
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Lamp power supply mode
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Powered by square pulses
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Optical System
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Monochomator
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Single beam, Czerny-Turner design grating monochromator
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Grating
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1800 l/mm
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Focal length
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277mm
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Blazed Wavelength
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250nm
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Spectral Bandwidth
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0.1nm, 0.2nm, 0.4nm, 1.2nm
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Detection and Data Processing System
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Detector
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Photomultiplier with high sensitivity and wide spectral range.
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Electronic and micro-computer system
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Light energy and negative high-voltage auto-balance
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Display mode
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LED display of energy and measurement values, concentration direct reading
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Read mode
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transient, integral, peak height, peak area.
Integral or sampling time is in the range of 0.1-19.9s.
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Scale expansion
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0.1~99
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Data processing mode
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Automatic calculation of mean, standard deviation and relative standard
deviation. Repeating number is in the range of 1-99
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Measurement mode
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3~7 standards can be determined for curve fitting. Sensitivity correction
available.
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Result printing
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Measurement data, working curve, signal profile and analytical conditions can
all be printed out.
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Instrument self-check
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Check current status of each function key
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Flame Analysis
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Burner
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10cm single slot all-titanium burner
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Spray chamber
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All-plastic spray chamber.
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Nebulizer
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High efficiency glass nebulizer with metal sleeve.
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Position adjustment
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Adjusting mechanism for vertical, horizontal positions and the rotation angle
of the burner.
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Gas line protection
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Fuel gas leak alarm
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Characteristic Concentration and Detection Limit
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Air-C2H2 flame
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Cu: Characteristic concentration =0.025mg/L, Detection limit =0.006mg/L;
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Function Expansion
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Flameless analysis with WF-1C graphite furnace system available.
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Hydride vapor generator can be connected for hydride analysis.
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Dimensions and Weight
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1020x490x540 mm, 80kg unpacked
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