KTN600 Online Total Nitrogen Analyzer
|Method||Potassium persulfate oxidation, ultraviolet Spectrophotometer|
|Range||(0.5-40) mg/L expandable|
|Display unit||12232 dot matrix display, 7-inch LCD touch screen dual display|
|Measurement mode||Manual measurement,
fixed-point measurement and automatic
|Measurement period||Anywhere from 30 minutes to 24 hours|
|Zero Drift||± 0.3%|
|Range Drift||± 3%|
|Repeatability||≤ ± 1.5%|
|Indication error||≤ ± 5%|
|MBTF||> 1440 hours|
|Stored data||Five years of data storage|
|Communication interface||2 Route 4-20ma, 1 Route RS232, 1 Route RS485|
|Ambient Temperature||5-40 °C|
|Ambient Humidity||(65 ± 20)% Rh|
|Power Requirements||Rated voltage (220 ± 22) VAC frequency (50 ± 1)% Hz|
|Contour Dimension||505 * 395 * 671(length * width * height unit mm)|
The total nitrogen content in water is one of the important indexes to measure the water quality. Its determination is helpful to evaluate the pollution and self-purification of water body. A large amount of domestic sewage, farmland drainage or nitrogen-containing industrial wastewater is discharged into the water body, which increases the content of organic nitrogen and various inorganic nitrogen compounds in the water, propagates a large number of organisms and microorganisms, consumes dissolved oxygen in the water, and deteriorates the water quality. When there is excessive nitrogen and phosphorus in hupo and reservoir, the phytoplankton will multiply and become eutrophic.
Principle: under the condition of high temperature, high pressure and alkalinity, oxidizer oxidizes ammonia nitrogen, nitrite nitrogen and organic nitrogen in water sample to nitrate. In concentrated sulfuric acid medium, nitrate reacts with chromogenic agent to form light yellow Nitro compound. The absorbance of the compound is proportional to the total nitrogen content in the water sample. The total nitrogen content in the water sample can be obtained by measuring the absorbance of the compound.
The main application scenarios include the monitoring of enterprise rainwater and sewage, the monitoring of total phosphorus in municipal pipe network, pumping station, ground water, river water, lake water and sea water.