In Situ Total Nitrogen Analyzer

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Yantai Chemins Instrument Co., Ltd.

Shandong, China

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The detection principle of the TN-300 Total Nitrogen Analyzer is mainly based on photochromic acid spectrometry and improved on this basis: at 120-124 ℃, alkaline potassium persulfate converts all forms of nitrogen into nitrate nitrogen, and in strong acid conditions. In the next step, the nitrate in the water sample reacts with the chromogenic reagent to form a brown-yellow complex, and its absorbance is measured at a wavelength of 420 nm. After internal calculation, the concentration value is directly displayed. Through the online monitoring of total nitrogen in the water, the instrument can provide users with continuous and stable monitoring data required for water quality investigation, water environment monitoring, and early warning of ecological disasters.

                                                            Model
                                                            TN-300
                                                        
                                                            Shell material
                                                            PVC Material
                                                        
                                                            Measurement principle
                                                            Chromotropic acid spectrophotometry
                                                        
                                                            cable length
                                                            5 meters，other sizes can be customized
                                                        
                                                            Measuring range
                                                            0～5 mg/L
                                                        
                                                            Installation method
                                                            Immersion approach
                                                        
                                                            precision
                                                            ±10%F.S.
                                                        
                                                            Protection class
                                                            IP68
                                                        
                                                            Resolution
                                                            0.001mg/L
                                                        
                                                            storage temperature
                                                            -5～45℃
                                                        
                                                            Calibration method
                                                            Two-point calibration
                                                        
                                                            working conditions
                                                            0～45℃、<0.1MPa
                                                        
                                                            output method
                                                            RS-485Bus，Modbus/RTU Protocol
                                                        
                                                            Power consumption
                                                            <30W
                                                        
                                                            power supply
                                                            24VDC±10%

In situ analyzer for the determination of total nitrogen concentration in water bodies such as surface water, nearshore, and estuaries.

Product advantages

Thermochromic acid spectrophotometry using the national standard method
Small size, immersion installation, in-situ water quality monitoring
Unique and compact structure design, low reagent consumption, low operation, and maintenance cost
The precise optical system, high detection accuracy, and good stability
Good correlation with manual analysis, suitable for sewage outfall and various water environment monitoring
It can be integrated into buoys, multi-parameter monitoring systems, run on ships, shore-based deployment, etc.