AAS-361 Series Atomic Absorption Spectrophotometer
AAS-361MC is a microcomputer type instrument, and the CRT model is
connected to a PC data station based on the host computer (MC
type).
Main features:
Rich functions: The computer automatically deducts blank values,
automatically deducts sensitivity drift, automatically deducts
baseline drift, automatically calculates average values and
deviations, automatically calculates working curve equations and reads out concentration values, automatically prints analysis
reports, and can also perform flame emission photometry Method,
hydride generation atomic absorption method and online enrichment
flow injection atomic absorption method analysis. The sensitivity
of the latter two reaches the level of graphite furnace, but the
price is much lower than that of graphite furnace.
Simple operation: After setting the conditions, you only need to
press the button twice each time to automatically read/print out
the absorbance value, concentration value and relative standard
deviation. Compared with microcomputer-free instruments, it saves a lot of manual data processing time.
Stable signal: Using imported high-quality photomultiplier tubes
and advanced integrated circuits, single beam optical path, strong
light monochromator and high-efficiency atomizer, it has low noise
and good precision. The computer logarithmic transformation is accurate, has no temperature drift, and has good baseline
stability.
Expert system: teacher and consultant for beginners (only model
361MC plus data station)
Corrosion-resistant atomization system: The atomization chamber is
made of high-quality engineering plastics, and the burner head is a
long-life, fast thermal balance titanium burner head that does not
require water cooling but can achieve long-term measurement sensitivity without change.
High-efficiency atomizer: guarantee of high sensitivity and high
reproducibility.
Fine peak search: The special wavelength fine-tuning mechanism can
accurately align the wavelength peak position.
Continuous slit: The continuous slit mechanism ensures the
acquisition of extremely high resolution and optimal spectral
bandwidth.
Good anti-rust performance: The spray chamber made of pure
high-quality engineering plastics completely solves the problems of
rust and hydrophilicity.
Good safety: Equipped with secondary explosion-proof measures, even
if the air is interrupted, no accident will occur.
Complete supporting facilities: It comes with complete supporting
facilities and can be used immediately after purchase. A variety of
optional matching combinations greatly expand the application scope
of this machine.
Technical indicators:
Wavelength range: 190nm~900nm
Wavelength indication error: ±0.5nm
Wavelength repeatability: better than 0.3nm (unidirectional)
Resolution: Resolve the two spectral lines and trough energy of
manganese < 40% (when the spectral bandwidth is 0.2nm)
Baseline stability: ≤ 0.005 A/30min (Cu)
Detection limit: ≤ 0.007μ g/ml (Cu)
Characteristic concentration: ≤ 0.04μ g/ml/1% (Cu)
Power supply voltage: AC220V±22V 50Hz±1Hz
Others:
Model | AAS-361MC | AAS-361CRT |
Type | Flame type (air-acetylene), intelligent |
Optical system | Single light speed, C-T type monochromator, grating 1200 lines/mm,
blaze wavelength 250nm, continuous spectral bandwidth 0~2nm,
relative aperture F/5.4 |
Light source system | Two sets of lamp power supplies provide independent power supply,
pulse lighting, lamp power supply 0~30mA |
Microcomputer specifications | 8031CPU microcontroller, EPROM16KB RAM 8KB | General personal computer (excellent brand machine, multimedia
configuration) |
Reading form | Four-digit LED digital display, direct reading T.ACRSD; print data
and reports, draw working curve recorder (2V, 1V) | Screen display reading: five-digit floating point, direct reading
TACRSD; display working curve analysis report; instantaneous
recording curve (paperless recorder function |
Way of working | Transmittance, atomic absorption method, flame emission method |
Signal form | Continuous reading (instantaneous value), average reading (hold),
peak height, peak area |
Concentration calculation method | Linear regression, curve fitting, standard addition method |
Number of standard samples | 1~6 pieces | 1~8 pieces |
Reading preparation time | 0~100 seconds, interval 0.1 seconds | 0~100 seconds |
Integral sampling time | Same as above | Same as above |
ruler extension | 1~20 times interval | 1~20 times |
average number of repetitions | 1~100 times to get an average value | 1~20 times |
Result storage | none | have |
other functions | Automatic blanking, automatic sensitivity and baseline drift
correction, automatic calculation of relative standard deviation,
automatic printing of analysis data, working curves, instrument
parameter tables, analysis reports, the CBT model can also store
the above content in the machine, and has an expert query system ,
including optimal condition settings, standard sample configuration
and interference prompts, providing 8 working curves for comparison
and the ability to correct the standard points. |
Gas control | Air acetylene flow pressure indication, secondary explosion-proof,
multi-stage imported pressure stabilizing valve to stabilize
pressure |
