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Jiaxing Daoyi Sensing Technology Co., Ltd
Basic principles and advantages of self-cleaning turbidity sensors
Date: 2025-12-14Read: 0
Turbidity is an important indicator in water quality monitoring, which reflects the concentration of suspended particulate matter in water and directly affects the transparency of the water body. Turbid water not only affects the appearance of water, but may also have adverse effects on aquatic ecosystems and human health. Therefore, turbidity monitoring is of great significance in water quality monitoring and environmental protection.
Traditional turbidity sensors are easily affected by pollutants during long-term use, resulting in inaccurate measurement results and affecting the reliability of monitoring data. In order to solve this problem, self-cleaning turbidity sensors have received widespread attention and application in recent years. The self-cleaning function enables the sensor to maintain long-term stability and accuracy, reducing the workload of manual maintenance.
Self cleaning turbidity sensorThe basic principle is:
1. Light source: The light emitted by the light source passes through the water sample and illuminates the suspended particles. Suspended particles can cause scattering or absorption of light, thereby altering the intensity of light entering the detector.
2. Detector: The detector receives light scattered by the water sample and converts it into an electrical signal. The intensity of the electrical signal is directly proportional to the concentration of suspended particles in water.
3. Measurement unit: By calculating the intensity change of scattered light, the sensor can provide a corresponding turbidity value. The common turbidity unit is NTU.
Advantages of self-cleaning turbidity sensor:
1. Reduce manual maintenance
Traditional turbidity sensors require regular cleaning and maintenance, especially in situations where there are many suspended solids in the water, and the cleaning work is often frequent and tedious. And sensors greatly reduce the frequency of manual intervention and maintenance through an automatic cleaning mechanism, lowering operating costs.
2. Improve measurement accuracy
Due to the automatic cleaning function, the measuring surface of the sensor is always kept clean, reducing the impact of pollutants on the measurement results, thereby improving measurement accuracy and stability. Especially under long-term operation or harsh environmental conditions, traditional sensors may experience data bias due to the accumulation of pollutants, while self-cleaning sensors can effectively solve this problem.
3. Extend the service life
Self cleaning sensors can reduce sensor damage or performance degradation caused by pollutant deposition. Maintaining a clean state for a long time not only improves the stability of measurement, but also extends the service life of the equipment.
4. Suitable for complex environments
Often suitable for monitoring tasks in handling highly turbid water bodies, such as industrial wastewater, rivers, reservoirs, etc. There are many suspended particles in these environments, and traditional sensors are prone to pollution in these environments, resulting in inaccurate measurements. Self cleaning sensors can ensure long-term stable operation in such complex environments.