Detailed Analysis of the Principle of Ultrasonic Level Meter

The ultrasonic level gauge is a digital liquid level instrument controlled by a microprocessor. The following editor will introduce the principle of ultrasonic level gauge to you. According to the different media of sound wave propagation, ultrasonic level gauges can be divided into three types: solid media, liquid media and gas media. Ultrasonic transducer probes can use two or one. The former is that one probe emits ultrasonic waves, and the other probe is used to receive them; the latter is that both the emission and reception of sound waves are performed by one probe, but the transmitting and receiving times are staggered from each other. Ultrasonic transducers for ultrasonic level gauges are composed of piezoelectric crystals such as lead zirconate titanate (PZT) and barium titanate (BaTiO3). Piezoelectric crystals have a piezoelectric effect. When an external force acts on the end faces of the crystal, charges will be generated at both ends of the crystal, and the polarities of the two ends are opposite. If the external force is alternating, an alternating electric field will be generated at both ends of the crystal. This phenomenon is called the positive piezoelectric effect. On the contrary, when an alternating voltage is applied to the electrodes at both ends of the crystal, a mechanical vibration with the same frequency as the applied alternating voltage will be generated along the thickness direction of the crystal, and sound waves will be emitted to the surrounding medium, which is called reverse vibration. Piezoelectric effect. According to the reverse piezoelectric effect and positive piezoelectric effect, it can be designed as a transmitting transducer and a receiving transducer. The above is the introduction of the principle of ultrasonic level gauge, you can understand it. Due to the use of non-contact measurement, the measured medium is almost unlimited, and can be widely used to measure the height of various liquids and solid materials. Intelligent externally attached ultrasonic liquid level gauge Ultrasonic liquid level gauge Ultrasonic mud level gauge Hammer material level gauge

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