Detection Principle
Add a known amount of potassium persulfate solution to the water sample and dissolve it under alkaline conditions at high temperature and high pressure. All nitrogen-containing substances in the water sample are converted into nitrate nitrogen. Add dilute hydrochloric acid to deduct the absorption of carbon dioxide. Measure the absorbance of nitrate nitrogen at wavelengths of 220nm and 275nm. According to Lambert Beer's law, there is a linear correlation between the total nitrogen content in water and the absorbance, and then determine the total nitrogen concentration in water.
| Model | AME-3020 |
| Parameter | TN |
| Measuring Range | 0-20mg/L、0-100mg/L,Dual-range automatic switching, expandable |
| Test Period | ≤50min |
| Repeatability Error | ±3% |
| Zero Drift | ±5%F.S. |
| Range Drift | ±5%F.S. |
| Limit of quantitation | ≤0.5mg/L(Indication error: ±30%） |
| Linearity | ±10% |
| MTBF | ≥ 720h per cycle |
| Power Supply | 220V±10% |
| Product size | 430*300*800mm |
| Communication | RS232、RS485、4-20mA |
Characteristics
1.The analyzer is miniaturization in size, which is convenient for daily maintenance;
2.High-precision photoelectric metering and detection technology are used to adapt to various complex water bodies;
3.Dual range (0-20mg/L)and (0-100mg/L) satisfy most of the water quality monitoring requirements. The range can also be extended according to the actual situation;
4.Fixed-point, periodic, maintenance and other measurement modes satisfy the requirements of measurement frequency;
5.Reduces the operation and maintenance costs by low consumption of reagents;
6.4-20mA,RS232/RS485andothercommunicationmethodssatisfy thecommunication requirements;
Applications
This analyzer is mainly used for real-time monitoring of total nitrogen (TN) concentration in surface water, domestic sewage and industrial wastewater.
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