Shen ChangHong 
Product Details
Custom Matching
QCOD-3M type COD Analyzer
1. Designed according to the latest national standard COD measurement method;
2. Easy to operate, good precision and stability;
3. With print and USB data upload function;
4. Large screen color touch screen, both Chinese and English display;
5. With one-click recovery function;
1. The instrument first digests the sample with sealed catalyst, and then measure them by colorimetric method.
2. The instrument adopts advanced cold light source, narrow-band interference technology and microcomputer automatic data processing to directly display the COD (mg / L) value of the sample.
3. Widely used in drinking water, groundwater, surface water, municipal sewage, industrial sewage, environmental monitoring, colleges and universities, scientific research institutions and other fields water measurements.
| 【host】 | |||
| Measurement range: | COD: 5～2000mg/L | Indication error: | COD: ≤ ± 5 % |
| Repeatability: | ≤3% | Display: | color touch screen, Chinese and English display |
| Anti-chlorine interference: | ≤2000mg/L | Temperature control system: | can be set at room temperature ~200 °C, COD digestion temperature is 165 °C |
| Temperature control accuracy: | ±0.5 °C | Temperature control time: | adjustable from 1 to 9999min |
| digestion time: | COD is 15min | Optical stability: | the instrument absorbance value drifts less than 0.002A within 20min |
| Batch volume: | 16 water samples | Weight: | Main unit 5kg；digestion instrument 5.5kg |
| Dimensions: | measuring instrument 400mm × 310mm × 158mm；Digestion instrument (DIS-16B type) 355mm × 260mm × 135mm | ||
| Power consumption: | <500W | ||
| Normal use conditions: | |||
| Ambient temperature: | 5 to 40 ° C | Relative humidity: | ≤85% |
| Power supply: | AC (220 ± 22) V; (50 ± 0.5) Hz | No significant vibration and electromagnetic interference, avoid direct sunlight. | |
2. The analyzer is a cold light source, narrow-band interference optical system, with good optical stability. 3. Both the analyzer and digester are color touch screen with friendly operation interface and display in Chinese and English. Simple and time-saving operation. The digestion colorimetry does not need to be changed. 4. With multi-point error-free calibration, the digester realizes zero error measurement at the set point, which completely eliminates the errors caused by the nonlinearity of the temperature sensor in common digesters in the market. 5.The digester has the function of timing reminder, which can automatically shutdown after digestion, and the instrument has the function of secondary protection. When the temperature of the digester exceeds 200 ℃, the instrument will cut off the power supply by itself to ensure the safety of the digestion process. |
 6. It can store 300 standard curves and 1000 measurements, and data will not lose even when power is cut off. 7. The curve can be inquired. In addition to the curve equation, the standard value of each standard substance, the corresponding absorbance, the calibration time and the number of the calibration personnel can be inquired, and the calibration state can be completely reproduced |
 8. Printing function: you can print a single or a whole page results. 9. With USB interface, and can be connected to computer. |
 10. The instrument has one key recovery function to prevent accidental loss of curve and data. 11. The instrument has its own calibration function, which can be self calibrated during operation, and can effectively eliminate the drift error caused by long-term use. |
1. The analyzer is separated from the digester, which does not affect the
stability of the optical system.| Name | Quantity | Name | Quantity |
| Host 1 | 1 digestion instrument | ||
| 10 digestion colorimetric tubes | 1 tube rack | ||
| Cod reagent 1 set | 1 digestion shield | ||
| UBS data 1 | 1 data collection disc | ||
| 1 operation manual | 1 product certificate | ||
| 1 warranty card | |||
