Influence of echo quality on the measurement of radar level gauge

The radar level meter can perform non-contact continuous measurement of the material (liquid) level of liquids, slurries and granular materials. The working principle of the radar level gauge is that the emitted electromagnetic wave is reflected when it hits the measured medium, and the quality of the reflected echo also determines the measurement effect of the level gauge. The echo quality is the ratio of the minimum echo amplitude to the maximum noise amplitude. Generally, the larger the echo quality value, the better the application effect of the level meter. Then what is the relationship between the echo intensity of the radar level gauge? 1. Surface condition of the measured medium The smoother the measured medium surface, the greater the dielectric constant, and the more conducive to echo reflection. 2. The dielectric constant of the propagation medium The more stable the dielectric constant of the propagation medium, the more favorable it will be for propagation. Because the radar wave of the radar level meter is not affected by the stability of the propagation medium during the propagation process, it is only related to its dielectric constant, which is also a major difference between radar technology and ultrasonic technology. According to the above description of the echo intensity value of the radar level gauge, the user should pay attention to some matters in the actual working conditions, such as: the surface state of the measured medium and its dielectric constant; the air dielectric constant between the antenna and the measured medium distributed. In addition to the influence of the echo quality on the measurement of the radar level meter, there are many other factors that will also affect the measurement use. The user should pay more attention to the actual situation when using it.

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