Product Details

DW-AAS-110A/120A/130A Graphite Furnace/Flame Atomic Absorption Spectrophotometer
Brand Name DRAWELL
Place of Origin Shanghai, China
Model Number DW-AAS-110A/120A/130A
Size 1020*490*540mm (main unit),unpacked 80kg
Weight 200kg
Wavelength Range 190-900nm
Focal Length 0.1nm, 0.2nm, 0.4nm, 1.2nm automatic change

Product Features

DW-AAS-110A/120A/130A

Flame/Graphite Furnace Atomic Absorption Spectrophotometer

 

FEATURES:

Innovated Rich oxygen air-acetylene flame analysis technique (DW-AAS-110A)

The patented flame analysis technique adopting rich oxygen air-acetylene flame as the substitution for nitrous oxide-acetylene flame for high temperature element analyses, such as Ca, Al, Ba, W, Mo, Ti, V, etc.  Flame temperature is continuously adjustable between 2300-2950℃, which makes it possible to choose the best atomization temperature for different elements.  It features easy operation, low analysis cost and wide flame AAS analytical range.  Rich oxygen flame is will not pollute the environment and is not harmful to human bodies.  It’s a break-through in flame AAS analysis.

Integrated flame/graphite furnace atomization system, changeable with flame emission burner

 

·         Automatically controlled changeover of the integrated flame and graphite furnace atomizer featuring easy operation and time saving eliminates human labor.

·         A flame emission burner head can be installed to perform flame emission analysis to Alkali metals as K, Na etc. (DW-AAS-110A/120A)

 

Accurate fully automated control system

·        Automatic multi-lamp turret, automatic adjustment of lamp current and optimization of light beam position.

·        Automatic wavelength scanning and peak picking

·        Automatic spectral bandwidth changing

·        Automatic changeover between flame and graphite furnace operation,  automatic optimization of position parameters, and automatic ignition

Reliable fully automatic graphite furnace analysis

·        Adopting FUZZY-PID and dual curve mode light-controlled temperature control technique, temperature auto-correction technique, ensures fast heating, good temperature reproducibility and high analytical sensitivity.  The temperature control accuracy is less than 1%.

·        Graphite furnace with pneumatic control and pressure lock ensures constant pressure and reliable contact.

Perfect safety protection measures

·        Alarm and automatic protection to fuel gas leakage, abnormal flow, insufficient air pressure and abnormal flame extinction in flame system;

·        Alarm and protection function to insufficient carrier gas and protective gas pressure, insufficient cooling water supply and over-heating in graphite furnace system.

Advanced and reliable electronic design

·        Adopting large-scale programmable logic array and Inter I2C bus technology

·        European type sockets and AMP adapters with high reliability to ensure long term reliability of the whole electronic system.

Easy and practical analysis software

·        Easy-to-use AAS analysis software is made under Windows operating system, realizing fast parameter setting and optimization.

·        Automatic display of measured data, automatic calculation and analytical result automatic print out.


SPECIFICATIONS:

Main Specification

Wavelength range

190-900n

Wavelength accuracy

±0.25nm

Resolution

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%.

Baseline stability

≤0.004A/30min

Background correction

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. (only for WFX-110A/120A)

Hollow Cathode Lamps

Lamp turret

6-lamp turret (DW-AAS-110A/120A),             4-lamp turret (DW-AAS-130A)

Auto-alignment, fully automated scan and peak-picking.

Lamp current adjustment

Automatic adjustment and display.           Wide pulse current: 0~25mA,              Narrow pulse current: 0~10mA                  

Lamp power supply mode

400Hz square wave pulse

100Hz Narrow square wave pulse + 400Hz wide square wave pulse (DW-AAS-110A/120A)

Optical System

Monochomator

Single beam, Czerny-Turner design grating monochromator

Grating

1800 l/mm

Focal length

277mm

Blazed Wavelength

250nm

Spectral Bandwidth

0.1nm, 0.2nm, 0.4nm, 1.2nm automatic change.

Flame Atomizer

Burner

10cm single slot all-titanium burner   

Spray chamber

Corrosion resistant all-plastic spray chamber.

Nebulizer

High efficiency glass nebulizer with metal sleeve, sucking up rate: 6-7mL/min

Emission burner

Provided with DW-AAS-110A/120A

Graphite Furnace

Temperature range

Room temperature~3000ºC

Heating rate

   2000℃/s

Graphite tube dimensions

28mm (L) x 8mm (OD)

Characteristic mass

Cd≤0.8 ×10-12g, Cu≤5 ×10-12g, Mo≤1×10-11g

Precision

Cd≤3%, Cu≤3%, Mo≤4%

Detection and Data Processing System

Detector

R928 Photomultiplier with high sensitivity and wide spectral range.

Software

Windows operating system

Analytical method

Working curve auto-fitting; standard addition method; automatic sensitivity correction; automatic calculation of concentration and content.

Repeat times

Maximum 20 times of repeat measurement, automatic calculation of mean value, standard deviation and relative standard deviation.

Multi-task function

Sequential measurement of multi-elements in one sample

Condition reading

With model function

Result printing

Measurement data and final analytical report printout, editing with Excel.

Standard RS-232 serial port communication

Characteristic Concentration and Detection Limit

Normal Air-C2H2 flame

Cu: Characteristic concentration≤0.025mg/L, Detection limit≤0.006mg/L;

Oxygen-rich Air-C2H2 flame

Ba:  Characteristic concentration ≤ 0.22mg/L

Al: Characteristic concentration ≤ 0.4mg/L (for WFX-110A)

Function Expansion

Hydride vapor generator can be connected for hydride analysis.

Dimensions and weight

1020 (L) × 490(W) × 540 (H) mm (main unit), unpacked 80kg

420 (L) × 420 (W) × 460 (H) mm (graphite furnace), unpacked 50kg

 

 

 

DW-AAS-110A/120A/130A Graphite Furnace/Flame Atomic Absorption Spectrophotometer

DW-AAS-110A/120A/130A Graphite Furnace/Flame Atomic Absorption Spectrophotometer

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