Product Catagory
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Rayleigh WFX-110/120/130 Spectrophotometer
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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°. (Only for WFX-110)
- 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 to 900n |
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Wavelength accuracy
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±0.5nm
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Resolution
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better than 0.3nm
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Baseline stability |
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.
The S-H background correction capability at 1.8A is better than 30 times. (for WFX-120/110) |
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Hollow Cathode Lamps
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Lamp turret
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6-lamp turret (WFX-110/120), 4-lamp turret (WFX-130)
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Lamp current adjustment |
Automatic adjustment and display. Wide pulse current: 0~25mA, Narrow pulse current: 0~10mA. (WFX-110/120)
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Lamp power supply mode
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Powered by two pulses (wide and narrow) simultaneously in WFX-110/120; square-wave pulse in WFX-130.
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Optical System
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Monochomator |
Single beam, Czerny-Turner design grating monochromator |
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Grating |
1800 l/mm |
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Focal length |
277mm |
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Blazed Wavelength |
250nm |
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Spectral Bandwidth |
0.1nm, 0.2nm, 0.4nm, 1.2nm |
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Detection and Data Processing System |
Detector |
Photomultiplier with high sensitivity and wide spectral range. |
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Software |
Ms-WindowsTM operating system |
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Analytical method |
Working Curve Method (1st order and 2nd order fitting), Standard Addition Method.
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Repeatable measurement
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Maximum 20 times of repeat measurement, automatic calculation of mean value, standard deviation and relative standard deviation.
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Condition reading |
With model function |
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Result printing |
Measurement data and final analytical report printout. |
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Flame Analysis |
Burner |
10cm single slot all-titanium burner for Air-C2H2 flame(WFX-110/120/130); 5cm single slot all-titanium burner for oxygen-rich flame (WFX-110). |
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Spray chamber |
All-plastic spray chamber. |
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Nebulizer |
High efficiency glass nebulizer with metal sleeve. |
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Position adjustment |
Adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner. |
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Protection for gas system |
Fuel gas leak protection, abnormal flame extinction alarm, air-pressure deficiency protection and explosion-proof device. |
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Flame ignition |
Automatic |
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Characteristic Concentration and Detection Limit |
Normal Air-C2H2 flame |
Cu: Characteristic concentration =0.05mg/L, Detection limit =0.006mg/L; |
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Oxygen-rich Air-C2H2 flame (only for WFX-110) |
Ba: Characteristic concentration =0.22mg/L |
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Hydride generation |
Hg: detection limit =0.5ug/L |
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Power Supply |
220V, 200W |
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Dimensions |
1020X492X537mm |
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Weight |
Unpacked 80kg |
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