
Shenchanghong COD, ammonia nitrogen, total phosphorus analyzer CNP-301C/D
① Equipped with DIS-16B (or optional DIS-20B/25B/36B) digestion analyzer;
② Equipped with printing and USB data upload;
③ Adopting a 5-inch large screen color touch screen with Chinese and English display;
④ Equipped with one click recovery function;
⑤ Used for wastewater detection.
working principle
COD、 The ammonia nitrogen and total phosphorus analyzer can directly measure the concentrations of COD, ammonia nitrogen, and total phosphorus in water samples. COD is a fast digestion optical method; Ammonia nitrogen adopts the Nessler's reagent method; Total phosphorus is obtained using the phosphomolybdic blue method.

Technical Specifications
1】 Measurement range: COD: 5-2000mg/L, ammonia nitrogen: 0.02-25mg/L, total phosphorus: 0.00-10mg/L (COD can be extended to 20000mg/L)
2】 Indication error: COD, total phosphorus: ≤± 5% (F.S), ammonia nitrogen: ≤± 3% (F.S)
3】 Repeatability: ≤± 3%
4】 Anti chlorine interference: ≤ 2000mg/L (COD determination)
5】 Temperature control accuracy: ≤± 1.0 ℃
6】 Temperature control system: adjustable from room temperature to 200 ℃, COD digestion temperature of 165 ℃, total phosphorus of 120 ℃
7】 Dissolving time: COD is 15 minutes, total phosphorus is 30 minutes
8】 Optical stability: The drift of absorbance within 20 minutes is less than 0.002A
9】 Dimensions: Host: 400mm × 310mm × 158mm;
10】 Weight: Host: 5kg; Dissolver: 5.5kg
1】 Temperature control range: adjustable from room temperature to 200 ℃, COD hydrolysis temperature of 165 ℃
2】 Temperature control accuracy: ± 0.5 ℃
3】 Dissolving time: adjustable from 1-9999 minutes COD:15min
4】 Batch processing capacity: 16 water samples (optional for 20A, 25B, and 36B)
5】 Power consumption:<500W
6】 Display screen: 3.5-inch color touch screen with a resolution of 320x240, displaying in both Chinese and English
7】 Dimensions: 355mm × 260mm × 135mm (excluding protective cover)
8】重 量: DIS-16B:5.5kg (DIS-20B:6.5kg 、 DIS-25B:7.0KG 、 DIS-36B:8.0kg )

Product Features
1】 The multi parameter water quality detector utilizes imported high brightness and long-life cold light sources, with high instrument stability and repeatability.
2】 The digestion instrument and the host are separate and independent instruments, which does not affect the stability of the optical system.
3】 The digestion instrument has PID automatic temperature control and timing, with high accuracy.
4】 The digestion temperature and time can be freely set for other purposes.
5】 The instrument adopts a 5-inch large screen color touch screen operation, with a user-friendly interface.
6】 The instrument has a one click recovery function.
7】 Equipped with a USB interface, data can be transferred to a computer, and test records can be printed or queried.
8】 The system has bilingual functionality and can switch between Chinese and English.
9】 Type C can store 300 curves, while Type D can store 3500 curves; Type C can store 1000 records, while Type D can store 100000 records.
10】 Optical system optimization upgrade (D-type), the system is more stable during measurement, with better accuracy and stability.


[Company Profile]

Shenzhen Changhong Technology Co., Ltd. (referred to as "Shenzhen Changhong") is a high-tech enterprise founded in 2002. For seventeen years, we have been committed to the research and development, production, and sales of over a hundred water quality monitoring instruments, including COD analyzers, ammonia nitrogen analyzers, total phosphorus analyzers, total nitrogen analyzers, as well as various heavy metals and inorganic compounds. Our product technology involves computer, microcontroller software and hardware, optics, chemical analysis, and other technical fields.
The products currently produced by the company mainly include COD analyzer, ammonia nitrogen analyzer, total phosphorus analyzer, total nitrogen analyzer, turbidity meter, residual chlorine analyzer, copper, iron, nickel, zinc, hexavalent chromium, nitrite, cyanide, sulfide, iodide, volatile phenol, hydrazine, aniline and other detection instruments for hundreds of substances in water. At the same time, the company also produces instruments for measuring physical parameters in water such as pH, conductivity, dissolved oxygen, turbidity, chromaticity, and total hardness.

