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Water quality sensor

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What kind of water quality sensors to detect the water pollution

Introduction water quality sensors

Water quality sensors play a crucial role in detecting and monitoring water pollution, providing essential data for water management. This article will explore the various types of advanced water quality sensors used to detect water pollution, their functionalities, and their significance in ensuring water safety and environmental protection.

water quality sensors

Kind of water quality sensors

water pH Sensor

Water PH is an important indicator for monitoring industrial wastewater. In industrial wastewater, the adaptation range of most microorganisms is pH 4.5-9, and the optimum pH range is 6.5-7.5. When the pH value is below 6.5, fungi start to compete with bacteria. When pH reaches 4.5, the bacteria will dominate in the biochemical tank and seriously affect the sludge settling. When the pH value exceeds 9, the metabolic rate of microorganisms will be hindered.

Conductivity Sensors

water EC Sensor

Conductivity sensors measure the ability of water to conduct an electrical current, which is influenced by the concentration of dissolved ions and salts. High conductivity levels may indicate the presence of pollutants such as road runoff, industrial discharges, or agricultural runoff. These sensors are valuable for detecting changes in water salinity and identifying sources of contamination in freshwater and marine environments.

JXCT sensor adopts electrode type conductivity measurement method with built-in high precision sensor, high accuracy, conductivity measurement range between 0~20,000μS/cm, measurement error is ±1%FS, high sensitivity. This conductivity sensor comes with a cable connected to a transmitter that sends the signal to processing and/or recording equipment.

Water Dissolved Oxygen (DO) Sensor

The molecular oxygen in the air dissolved in water is called dissolved oxygen.The content of dissolved oxygen in water is closely related to the partial pressure of oxygen in air. Under natural circumstances, the oxygen content in the air changes little, and the lower the water temperature, the higher the dissolved oxygen content in the water. The molecular oxygen dissolved in water is dissolved oxygen, usually expressed as DO, in milligrams of oxygen per liter of water. The amount of dissolved oxygen in water is an index to measure the self-purification capacity of water body.

Water Residual Chlorine Sensor

Water Residual chlorine is the general term for the free and bound chlorine remaining in the water after chlorination disinfection and exposure for a certain period of time. The residual chlorine sensor is measure residual chlorine, chlorine dioxide and ozone in water. The electrode structure is simple and easy to clean and replace. We use it in food processing plants, drinking water distribution networks, swimming pools, circulating water, water quality treatment.

water Online Monitoring Systems

Water quality monitoring system

Water monitoring systems integrate multiple sensors to continuously measure and record water quality parameters in real time. We use monitoring systems in water treatment plants and natural water bodies to provide real-time data on changes in water quality. By enabling rapid detection of pollution events, online monitoring systems support proactive management and response strategies to safeguard water resources.

Water Chemical Oxygen Demand (COD) Sensor

Many organic substances dissolved in water absorb UV light. Therefore, by measuring the degree of absorption of organic matter to 254 nm ultraviolet light. The Water COD Sensor accurately measures the amount of organic pollutants in the water.

The water COD sensor uses two light sources. One is ultraviolet light that measures COD content in water, and the other is reference light that measures turbidity in water. Optical path attenuation is feasible to a certain extent through a specific algorithm. Eliminate the interference of particulate suspended impurities, thus achieving more stable and reliable measurement.

Emerging Sensor Technologies

Emerging sensor technologies, such as nanosensors and microfluidic devices, are paving the way for more sensitive and cost-effective water quality monitoring. Nanosensors can detect ultra-low concentrations of pollutants, while microfluidic devices enable precise and automated analysis of water samples. These cutting-edge technologies hold great promise for enhancing the detection capabilities of water quality sensors.

Significance of Water Quality Sensors

The significance of advanced water quality sensors can provide accurate water pollution data and can take proactive measures to protect water resources. These sensors play a key role in assessing human activities to improve water quality. Through continuous monitoring of pollutants, advanced water quality sensors contribute to sustainable water management.


Water quality sensor is an important tool for detecting water pollution and provides a variety of functions for measuring water parameters. From electrochemical sensors to remote sensing technology innovation. These sensors provide valuable insights into the health of water bodies and support water resource management. There is a growing demand for sustainable water management, and advanced water quality sensors will be an important part of ensuring water quality.