The product complies with GB/T 11894-1989 Water Quality - Determination of Total Nitrogen, HJ636-2012 Water Quality - Determination of Total Nitrogen, Q/WTH63S-2024 TH-ZX Automatic Total Nitrogen Water Quality Analyzer.
Application Scope
The TH-ZX400 automatic total nitrogen water quality analyzer is a device independently developed by our company for measuring total nitrogen concentration in water. It is suitable for online and offline detection of surface water, pollution source water quality, industrial and municipal wastewater, and sewage.
Instrument Principle
At 120～124℃, alkaline potassium persulfate solution converts nitrogen in nitrogen-containing compounds in the sample to nitrate. Using ultraviolet spectrophotometry, absorbance A220 and A275 are measured at wavelengths 220nm and 275nm respectively, and the corrected absorbance A is calculated according to the following formula. Total nitrogen (as N) content is proportional to the corrected absorbance A. A = A220 - 2A275
Instrument Features
•Uses imported photodetector with very high sensitivity;
•Uses high-precision syringe pump combined with multi-way valve for very high reagent injection accuracy;
•Unique technology subtracts the influence of water turbidity and color, stable operation;
•The instrument has online, offline, timed, and fixed-point measurement functions, set according to user needs;
•The instrument has automatic cleaning, manual cleaning, and fixed-point cleaning functions;
•The instrument has automatic calibration, automatic zero point, standard sample verification, and spiked recovery functions;
•The instrument has self-diagnostic function, alarm prompts, easy maintenance;
•The instrument has remote control function, realizing remote transmission, monitoring, and inspection of instrument working parameters, status, and data, supporting remote calibration, remote verification, and remote spiked recovery;
•The instrument's built-in refrigeration system makes reagent storage time longer and more stable;
•Low reagent and waste liquid usage, small maintenance amount, long maintenance cycle, few parts replacement, easy replacement;
•Chinese interface display, touch screen design, simple operation, powerful functions;
•Large amount of data stored for a long time, data not lost on power failure;
•Rich communication interfaces, communication protocol fully compliant with relevant standards of the Ministry of Ecology and Environment;
•Automatic protection on power/water failure, parameter saving, auto-start on power restoration.
