Feature of Atomic Absorption Spectrophotometer DW-320
High cost-effective flame AAS
Reasonable design, adopting the same key parts as in high-end instruments, ensures basic functions but less automation to provide an economic model for users
Reliable integration of the main unit with the microprocessor
Built-in microprocessor with necessary auto-control and data processing functions achieve high reliability of the instrument.
Simple and East Operation
Eye-catching digital display, multi-function data processing ability, and fast function-key direct input realize easy and fast analysis.
SPECIFICATIONS
| Main Specification | Wavelength range | 190-900nm |
| Wavelength accuracy | ±0.5nm | |
| 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 | 0.005A/30min | |
| Background correction | The D2 lamp background correction capability at 1A is better than 30 times. | |
| Light Source System | 2 lamps are powered simultaneously (one preheating) | |
| Lamp current adjustment range: 0~20mA, | ||
| Lamp power supply mode | Powered by 400Hz square pulse | |
| 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 4 steps | |
| Adjustment | Manual adjustment for wavelength and slit | |
| 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 | |
| Position adjustment | Manual adjusting mechanism for vertical, horizontal positions and the rotation angle of the burner | |
| Gas line protection | Fuel gas leakage alarm | |
| Detection and Data Processing System | Detector | R928 Photomultiplier with high sensitivity and wide spectral range. |
| Electronic and micro-computer system | Automatic adjustment of light source power. Light energy and negative high-voltage auto-balance | |
| Display mode | LED display of energy and measurement values, concentration direct reading | |
| Read mode | Transient, time average, peak height, peak area. | |
| Integral time is selectable in the range of 0.1-19.9s. | ||
| Scale expansion | 0.1~99 | |
| Data processing mode | Automatic calculation of mean, standard deviation and relative standard deviation. Repeating number is in the rang of 1-99 | |
| Measurement mode | Automatic curve fitting with 3~7 standards; Sensitivity auto-correction | |
| Result printing | Measurement data, working curve, signal profile and analytical conditions can all be printed out. | |
| Instrument self-check | Check current status of each function key | |
| Characteristic Concentration and Detection Limit | Air-C2H2 flame | Cu: Characteristic concentration≤0.025mg/L, Detection limit≤0.006mg/L; |
| Function Expansion | Hydride vapor generator can be connected for hydride analysis. | |
| Dimensions and Weight | 1020 x 490 x 540 mm, 80kg unpacked | |
