P0-203 Orthophosphate Water Quality Online Automatic Monitor (Fast Type)
Category:
Organic Nutrient Online Analyzer
Molybdenum blue/molybdenum yellow colorimetric method: The orthophosphate in the aqueous sample reacts with the molybdate in an acidic medium to form a specific complex. Ascorbic acid/vanadium reacts with this complex, giving the solution its color. The absorbance of this solution is read at a specific wavelength, and the concentration of orthophosphate is directly proportional to the absorbance of the solution.
产品描述
Measurement Principle
Molybdenum blue/molybdenum yellow colorimetric method: The orthophosphate in the aqueous sample reacts with the molybdate in an acidic medium to form a specific complex. Ascorbic acid/vanadium reacts with this complex, giving the solution its color. The absorbance of this solution is read at a specific wavelength, and the concentration of orthophosphate is directly proportional to the absorbance of the solution.
Key Features
- The LED light source with special wavelength is used to stabilize the light source and have a long service life;
- The high-precision, multi-channel peristaltic pump is used for reagent extraction, and a variety of reagents can be injected in a single sampling, shortening the measurement time;
- The reagent consumption in a single measurement is only 0.1mg/child, reducing secondary pollution;
- Customized cuvette made of UPVC material has good acid and alkali resistance, long service life and high stability;
- The cuvette adopts a flip-top design, which is non-sealed and easy to clean;
- Built-in magnetic stirring makes the reagent reaction more direct and uniform, so as to achieve the purpose of rapid value output;
- It has the function of separating waste liquid to realize the separate discharge of waste liquid and wastewater;
- It has functions such as automatic standard liquid calibration and automatic standard liquid verification;
- The pinch valve design is used to prevent the backflow of standard liquid and cause cross-contamination;
- Support 4-20mA output, 485 output, support relay control, input trigger and other functions;
- It has automatic fault diagnosis and recording functions, such as component failure, over-range alarm and other information;
- It has the function of recording measurement data and alarm information storage of analytical instruments, which can be stored for more than 3 years, and supports SD card to quickly export data;
- It has three levels of administrative permissions.
Application Scenarios
- Online monitoring of orthophosphate concentration in surface water, municipal sewage outlets, pollution source outlets, and industrial wastewater outlets;
- Online monitoring of orthophosphate concentration in water treatment processes such as secondary sedimentation tank, high-efficiency sedimentation tank, and biochemical tank outlet.
技术参数
| 测量方法 | 钼蓝比色法 | 钼黄比色法 |
| 量程 | 0-2mg/L | 0-20mg/L |
| 示值误差 | ≤±5%或≤±0.005mg/L,取大者 | ≤士5%或≤±0.02mg/L,取大者 |
| 检出限 | ≤0.01mg/L | ≤0.02mg/L |
| 定量下限 | ≤0.02mg/L | ≤0.2mg/L |
| 重复性 | ≤5% | |
| 低浓度漂移 | ≤5% | |
| 高浓度漂移 | ≤5% | |
| 分辨率 | 0.0001mg/L(小数点位数2-4位可设置) | |
| 显示 | 7寸触摸屏 | |
| 测量模式 | 连续模式、周期模式、受控模式、手动模式可选 | |
| 测量周期 | 3分钟左右 | |
| 校准模式 | 手动校准和自动校准两种模式 | |
| 维护周期 | 一般每月一次 | |
| 电源 | 220V±22V,50HZ或DC24V | |
| 输出 | 4-20mA输出 | |
| 通讯方式 | MODBUS RS-485 | |
| 环境条件 | 温度可调的室内,建议温度+10-40°C;湿度≤85%(不结露) | |
Related Cases
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