Sensors working in water

Many sensors are working in water, so some sensors must be done well. Commonly used underwater sensors include water temperature sensors, depth sensors, flow sensors, and water quality sensors. These sensors can measure the corresponding data for reference and detection.

Natural river water temperature changes little in a year. To make accurate measurements, a platinum resistance temperature sensor is required, and the temperature sensor is set to measure point 1m below the water surface. Water depth sensors are more commonly selected as input type liquid level sensors, which use a silicon piezoresistive full bridge pressure sensing device to convert the water depth into a current or voltage signal. The range depends on the water depth you need to measure. If the sensor requires high-precision output, it is recommended to use an intelligent liquid level sensor and use RS485 signal output. The underwater flow velocity sensor uses the ultrasonic Doppler effect as the measurement principle. It measures the velocity of the water body by the reflected wave of the particles suspended in water. This type of sensor can measure the flow velocity of the water in the entire section and is more expensive. There is also a simple transfer flow rate measurement sensor, but only one flow rate can be measured. The water quality combination sensor is used to detect the quality of water, which is a single measurement sensor that combines oxygen, nitrogen, and other organisms.

There are other sensors used to measure water parameters, but the most common ones are the ones mentioned above. Sensors working in water require good sealing, waterproof, antiseptic, stable performance and long life because of Sensors are generally difficult to replace.