Introduction: HM-840 four-parameter water quality detector has high precision, wide range of use and powerful COD/ammonia/total phosphorus three-parameter detector. It is widely used in research institutes, large and medium-sized water plants and industrial and mining enterprises, domestic or industrial water. The concentration of COD/ammonia nitrogen/total phosphorus in wastewater. Features: 1. Batch inspection: equipped with 4 water sample detection positions, intelligent multi-channel detection structure design, simultaneous detection of multiple water samples, strong batch processing ability, fast detection speed, solving the problem of slow detection of multi-point water samples. Greatly improved detection efficiency. 2. Reference channel: The instrument is equipped with a fixed reference channel. During the detection process, the reference concentration and the sample concentration can be directly read at the same time, which improves the detection accuracy and avoids the error of manual operation. 3. Filter: 3 wavelength filters are standard, which meets the requirements of high COD, COD low range, ammonia nitrogen, total phosphorus and total nitrogen. Technical Parameters 1. Standard wavelength: 420nm, 610nm, 700nm ± 1nm wavelength; 2. *Detection Bit: Automatically independent 4 detection bits, the number of single measurement detection bits is optional; 3. * Reference channel: With fixed automatic reference channel, the detection process is highly automated and the test results are accurate; 4. * Display: 7-inch capacitive color LCD touch screen, intuitive menu navigation system, easy to operate and visual; 5. Measurement items: rapid determination of COD high range, low COD range, ammonia nitrogen, total phosphorus, total nitrogen 6. Detection range: COD: 0~10000 mg/L (segmentation), ammonia nitrogen: 0.01-100mg/L, total phosphorus 0-8mg/L, total nitrogen 0.01-100mg/L 7. Inter-channel error: ± ≤ 2% 8. Repeatability: ± ≤ 2% 9. Accuracy: ± ≤ 5% 10. Concentration direct reading: The measurement project is freely switched, equipped with built-in curves, and the concentration can be read directly, and the measurement results are more accurate; 11. * Large-capacity storage: With data storage function, it can store 5 million test data and can be viewed freely; 12. Standard disintegrator: standard deconstructor, optional digester type, can digest 12~36 water samples in batches; 13. Equipped with consumables reagents: equipped with complete professional consumable reagents, the experiment is convenient and quick, and the measurement is simpler and more accurate; 14. * Pre-stored curve: 400 curves of memory, including 400 standard curve and 4 fitting curves, which can be revised and saved by themselves; 15. Calibration function: The instrument has an automatic calibration function, which can calculate and store curves according to standard samples without manual curve creation; 16. Printer: Built-in printer that prints current data and stored historical data; 17. Data transmission: equipped with USB interface and serial port transmission function, real-time measurement data upload, and can also transfer stored historical data to the computer; 18. Operation interface: Chinese and English bilingual operation interface; 19. Light source: The life of the light source is 100,000 hours;
Introduction: HM-840 four-parameter water quality detector has high precision, wide range of use and powerful COD/ammonia/total phosphorus three-parameter detector. It is widely used in research institutes, large and medium-sized water plants and industrial and mining enterprises, domestic or industrial water. The concentration of COD/ammonia nitrogen/total phosphorus in wastewater.
