Hunan ultrasonic level gauge

Ultrasonic level gauges are often used in liquid level measurement on industrial sites. They are a good helper for monitoring liquid level. Because of their non-direct contact with the liquid level, they solve the difficulties in industrial applications. Many industrial friends in Hunan want to know which ultrasonic level gauge is better in Hunan, and how to judge the quality of ultrasonic level gauge manufacturers in Hunan. The following editor will first popularize the knowledge of ultrasonic level gauges for everyone, so they are facing the choice of ultrasonic Liquid level timing is not easy to be at a loss because of ignorance. First of all, let’s first talk about the principle of the ultrasonic level gauge. The working principle of the ultrasonic level gauge is that the ultrasonic transducer (probe) sends out high-frequency pulse sound waves and encounters the surface of the measured level (material). The transducer receives and converts it into an electrical signal. The propagation time of the sound wave is proportional to the distance from the sound wave to the surface of the object. The relationship between the sound wave transmission distance S and the sound speed C and the sound transmission time T can be expressed by the formula: Su003dC×T/2 .　　 The probe part emits ultrasonic waves, and then is reflected by the liquid surface, and then received by the probe part. The distance from the probe to the liquid (object) surface is proportional to the time elapsed by the ultrasonic wave: 　　hb u003d CT2 ie distance [m] u003d time × speed of sound/2 [ m]　　Temperature compensation formula for sound velocity: ambient sound velocity u003d 331.5 + 0.6×temperature. In any of the following situations, pay attention to: 　　l foamy liquid/solid l There are strong voltages, currents, and strong electromagnetic interference around. Avoid high voltage, high current and strong electromagnetic interference. Strong wind and direct sunlight. Strong vibration. Ultrasonic level meter is a digital level meter controlled by a microprocessor. In the measurement, the pulsed ultrasonic wave is emitted by the sensor (transducer), and the sound wave is reflected by the surface of the object and then received by the same sensor and converted into an electrical signal. The distance between the sensor and the object to be measured is calculated from the time between the emission and reception of the sound wave. Due to the non-contact measurement, the measured medium is almost unlimited, and it can be widely used for height measurement of various liquid and solid materials.　　Product features　　n automatic power adjustment, gain control, temperature compensation.　　N Advanced detection technology, rich software functions to adapt to various complex environments.　　N Adopting new waveform calculation technology to improve the measurement accuracy of the instrument.　　N It has the function of suppressing interference echo to ensure the authenticity of the measurement data. n Multiple output forms: programmable relay output, high-precision 4-20mA current output, Rs-485 digital communication output, split ultrasonic level probe installation principle ) Is emitted, and when the surface of the object to be measured (water surface) is reflected, the reflected echo that is folded back is received by the same transducer (probe) and converted into an electrical signal. The time between pulse sending and receiving (the movement time of the sound wave) is proportional to the distance from the transducer to the surface of the object. The relationship between the distance S of the sound wave transmission and the speed of sound C and the transmission time T can be expressed by the formula: Su003d　CⅩT /2　　 When installing an ultrasonic level meter, the blind area of u200bu200bthe ultrasonic level meter must be considered. When the liquid level enters the blind zone, the ultrasonic transmitter cannot measure the liquid level. Therefore, when determining the range of the ultrasonic level gauge, a margin of 50 cm must be left. When installing, the transmitter probe must be higher than the highest liquid level. It's about 50 cm. Only in this way can the accurate monitoring of the liquid level be ensured and the safety of the ultrasonic liquid level gauge can be ensured.　　In actual use, because of ill-considered installation, the level gauge was submerged by water, causing the level gauge to be completely damaged. Low price, small size and light weight. It can be used for non-contact level measurement of liquid and bulk solids in food, chemical, semiconductor and other industries. It can be used for remote level monitoring and pump control. Note when installing machinery: the installation should be vertical When measuring the surface of the object, avoid using it to measure foamy objects, and avoid installing it where the distance from the surface of the measuring object is less than the blind zone distance (blind zone: each product will have a standard, which is known with the product), and the beam should be considered to avoid blocking substances When encountering the filling mouth and the container wall, when detecting large solid objects, the probe position should be adjusted to reduce the measurement error
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