In Situ Total Phosphorus Analyzer

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Yantai Chemins Instrument Co., Ltd.

Shandong, China

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The detection principle of TP-300 in-situ total phosphorus analyzer is mainly based on spectrophotometry and improved on this basis: the water sample reacts with potassium persulfate in the digestion tank at 120-124 ℃, so that different forms of phosphorus-containing compounds in the water are reacted. converted to orthophosphate. Orthophosphate reacts with ammonium molybdate to form a phosphomolybdate heteropolyacid in the presence of antimony salt, which is immediately reduced by ascorbic acid to form a blue complex.

                                                            Model
                                                            T P-300
                                                        
                                                            Measurement principle
                                                            Ammonium molybdate spectrophotometry
                                                        
                                                            Sensor Housing Material
                                                            PVC material
                                                        
                                                            Protection class
                                                            IP68
                                                        
                                                            Measuring range
                                                            0~2 mg/L
                                                        
                                                            Storage temperature
                                                            -5～45℃
                                                        
                                                            Precision
                                                            0.05mg/L or ±10%，whichever is higher
                                                        
                                                            Working conditions
                                                            0～45℃、<0.1MPa
                                                        
                                                            Installation method
                                                            Immersion method
                                                        
                                                            Resolution
                                                            0.001mg/L
                                                        
                                                            Power consumption
                                                            <30W
                                                        
                                                            Calibration method
                                                            Two-point calibration
                                                        
                                                            Cable length
                                                            standard 5 meters, other lengths can be customized
                                                        
                                                            Output method
                                                            RS-485 bus, Modbus/RTU protocol
                                                        
                                                            power supply
                                                            24VDC±10%

In situ sensors are suitable for the determination of total phosphorus concentration in water bodies such as surface water, nearshore, and estuaries. Through the online monitoring of total phosphorus in water, the instrument can provide users with continuous and stable monitoring data required for water quality investigation and research, water environment monitoring, and early warning of ecological disasters such as red tide and green tide.

Product advantages

Ammonium molybdate spectrophotometry using the national standard method
Small size, submerged 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.