Related applications of ultrasonic water level sensors

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Working Principle of Ultrasonic Water Level Sensor

In short, water depth detection uses sensors to measure the water depth in a tank or container. Although a variety of sensors can be used for this application, , the editor of Gongcai.com will introduce the application of ultrasonic sensors.

For the detection of water depth, the water depth can be calculated by finding the distance between the ultrasonic sensor transceiver and the water surface. The sensor will send a short ultrasonic pulse and measure the propagation time of the pulse to the liquid and back. This distance is then calculated and subtracted from the total depth of the tank to determine the water depth. This method of measurement with an ultrasonic sensor more accurately describes the water level measurement. It will produce the same results whether in a tank or container. It is worth noting that positioning the sensor at a fixed point anywhere the water is stored can provide benefits to underwater immersion, including greatly increasing the overall life of the sensor.

Common Problems of Ultrasonic Water Depth Detection

Is it necessary to seal the back of the sensor when using it?

Since the front of the sensor is IP67 rated, the back of the sensor must be sealed to use the sensor. However, it is still necessary for the user to seal the pin portion of the sensor. This can be easily done if a shielded cable connection option is added when selecting the sensor.

If the sonar is not designed for underwater use, how can it be installed so that it works underwater? If you use the analog envelope output, you can use the waveform and look for underwater reflections in the waveform detected by the sensor. This will require an A/D converter that samples regularly, and then that data will show the distance to the target. Some of these customers have had success using the analog voltage output (it reports the wrong distance because ultrasonic sound waves travel at a different speed underwater, but they were able to use the measurements with the lookup value).

Ultrasonic Sensor Applications

Ultrasonic water level sensors are not limited to water detection, but can be used in a variety of applications, including:

Fuel Tank Level Measurement

Diesel Fuel Metering

Irrigation Control

Stream or River Level Monitoring

Wet Well and Pump Control

Marine or Tidal Level Monitoring and Tsunami Warning

Technical solution for underwater use of ultrasonic sensors

As mentioned above, to truly measure water depth rather than water level using ultrasonic sensors, we must submerge the sensors in water. We do not recommend this as our sensors are not designed for underwater use and have not been properly tested in such environments. Although the MaxSonar-WR and MaxSonar-WRC lines are rated to IP67 and can be submerged up to one meter, this is against their intended functionality and will void the manufacturer's warranty. We cannot guarantee proper functionality if submerged.

For the application of ultrasonic sensors in water depth detection, Gongcai.com provides MaxBotix UAV Ultrasonic Sensor- MB7052, which solves the common problems of ultrasonic detection of water depth. The UAV Ultrasonic SensorMB7052 is an ultrasonic sensor with IP67 protection safety level, which can protect against dust inhalation and can be temporarily immersed. PVC material encapsulation has a certain degree of corrosion resistance. In outdoor environments with clutter interference, it can effectively remove clutter and detect the distance information of the largest target. The resolution of the sensor can reach 1cm, and the measurable distance is up to 7.65 meters. Therefore, it is a low-power product suitable for outdoor environments, such as drone systems. At the same time, it has also been widely used in the field of battery-powered IoT smart devices.