In recent years, with the continuous development of industrial technology, level measurement has become extremely important, and increasingly higher demands have been placed on the accuracy, breadth, and anti-interference capabilities of level measurement. Level measurement data is a crucial parameter for production and process control. The total amount of liquid stored in storage tanks is managed and controlled using level measurement. Early on, due to the small scale of industrial production, mechanical measurement methods were mainly used for level measurement. However, with the expansion of production scale, many automated industrial production systems require real-time level monitoring. Ultrasonic waves, with their advantages of strong directivity, slow energy consumption, and no direct contact with the measured object, are widely used in level measurement. Below, we will examine the relevant principles and applications of ultrasonic sensor level measurement.
Ultrasonic level sensors, controlled by a microprocessor, emit and receive ultrasonic waves. When these waves propagate through the air and encounter obstacles (including liquids like water), they are significantly reflected. Ultrasonic waves can be used not only for distance and velocity measurement but also for measuring liquid and material levels. By measuring the time it takes for the ultrasonic wave to travel one round trip from the level gauge to the liquid surface, and using the known speed of sound, the distance from the level gauge to the liquid surface can be calculated. Then, based on the total height of the level gauge, the material level can be determined. Ultrasonic sensors offer advantages such as high sensitivity, long lifespan, and long measurement distance. However, because ultrasonic level sensors operate on the principle of sound wave reflection, obstacles should not be present beneath the sound waves, as these can interfere with transmission and cause signal loss. Use in absorbing environments, such as foam, is not recommended.
In recent years, ultrasonic level sensors have become increasingly popular in level measurement instruments. They employ a non-contact measurement method, offering advantages such as easy installation, low failure rate, easy maintenance, high accuracy, and wide adaptability, unaffected by the medium. The SENIX ToughSonic-50 ultrasonic level sensor, offered by Gongcai.com, is a remote, solar-powered ultrasonic sensor that transmits measurement data to a centralized management system via satellite and radio communication. Furthermore, the ToughSonic50 ultrasonic sensor can detect at a maximum distance of 50 feet (15.2 meters). Like all toughness sensors, its durability and ease of use make it suitable for harsh industrial environments. The ToughSonic50s are fully immersable in water, corrosion-resistant, shock-resistant, and robust. They can also be fully configured using SenixVIEW software. Additionally, the ToughSonic50s are available in three different housings, each with an RS-232 or RS-485 serial interface. These 9-wire sensors allow up to six simultaneous serial, analog, and/or switching outputs. These leading sensors are used worldwide in remote level applications and harsh factory environments. The accompanying PC software, SenixVIEW, allows for configuration of sensor interfaces, timing parameters, filters, and modes. This saves costs by reducing the investment in PLCs, delay circuits, and delay relays.
