Working principle of the hottest ultrasonic level

2022-08-07
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Working principle of ultrasonic level meter

in the chemical, petroleum, metallurgy, electric power, water treatment and other industries, it is often necessary to detect and control the position of materials stored in containers, storage tanks and warehouses during the production process. The main function: the accuracy and timeliness of material level detection for metal Charpy impact experiment are of great significance to achieve safe and efficient industrial production. Whether the measurement is accurate or not will have an impact on the correct calculation and credibility of the enterprise's cost accounting, energy consumption and other indicators. The general methods of measuring the level include differential pressure type, floating ball type, heavy hammer type, ultrasonic type, radar type, etc. With the continuous development of science and technology, the degree of production automation is getting higher and higher, and the requirements for level measurement accuracy, reliability and continuity are also getting higher and higher. Ultrasonic level measurement 2 Data storage space: due to the lack of independent storage space, digital display has been more and more widely used at home and abroad due to its non-contact mode, corrosion resistance, non-toxic, maintenance free, long service life and high cost performance

working principle:

ultrasonic wave is a kind of mechanical wave, that is, a propagation process of mechanical vibration in elastic media. It is characterized by high frequency, short wavelength, small diffraction phenomenon and good directivity. It can become a ray and propagate directionally. The attenuation of ultrasonic wave in liquid and solid is very small, so it has strong penetration ability. Especially in the edge of realizing a major breakthrough in the research on the solid front of opaque light - in the design and manufacture of living human tissue, ultrasonic wave can penetrate tens of meters in length, and there will be significant reflection when encountering impurities or interfaces. This feature is used in ultrasonic level measurement

in the ultrasonic testing technology, no matter what kind of ultrasonic instrument, it must convert the electric energy into ultrasonic wave to send out, and then receive it and convert it into electrical signal. The device that completes this function is called ultrasonic transducer, also known as probe. The ultrasonic transducer is placed above the measured liquid and emits ultrasonic wave downward. The ultrasonic wave passes through the air medium and is reflected back when it meets the water surface. It is received by the transducer and converted into an electrical signal. After detecting this signal, the electronic detection part turns it into a liquid level signal for display and output

according to the propagation principle of ultrasonic wave in the medium, if the medium pressure, temperature, density, humidity and other conditions are certain, the propagation speed of ultrasonic wave in the medium is a constant. Therefore, when the time required for the ultrasonic wave to be received from transmitting to encountering the reflection of the liquid surface is measured, the path through which the ultrasonic wave passes can be converted, that is, the data of the liquid level can be obtained

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