Thread Content
Radar level gauges can perform continuous measurement of different levels, and they are suitable for harsh environments such as high temperatures, steam, high dust levels, and volatile gases. They are widely used in industries such as chemicals, energy, petrochemicals, pharmaceuticals, and cement. Radar level gauges have six advantages: Advantage 1: Advanced algorithms ； Advantage 2: Simple debugging, as the display allows for an intuitive view of the measurement waveforms ； Advantage 3: High frequency, small instrument beam angle, strong interference resistance, and high stability and reliability of measurements ； Advantage 4: Frequency modulation technology ； Advantage 5: Easy to connect ； Advantage 6: Wide range of applications ； The Dinghua Electronics DHE-RD radar level gauge can be used in various types of operating conditions, and it is not affected by factors such as the density, viscosity, conductivity, dust, or corrosiveness of the medium. In addition to the performance features mentioned above, radar level gauges also have advantages in signal processing; the following details these aspects along with related factors. 1. After the radar level gauge is installed and put into use, the conditions of the spatial surface in the application environment are constantly changing. Take a reaction tank as an example. There are various media that need to be measured in chemical processes. During feeding, the liquid level changes; factors such as material adhesion and alterations in the physical or chemical properties of the tank’s inner surface also occur. These changes inevitably affect the intensity of the reflected signal. 2. The liquid level measured by radar level gauges also varies in various situations; under different conditions, the number of times the signal is reflected changes. If it is mirror-like when at rest ； When the liquid level changes, waves form on the surface ； There may sometimes be foam present. 3. When the radar level gauge measures different heights of the liquid surface, the shape of its measurement volume keeps changing, and the reflection and oscillation of the signal also vary. Especially when the measuring space has a curved surface, such as a spherical vessel, a dome tank, or a horizontal elliptical tank, the curved surface has a focusing effect on electromagnetic waves, which results in the height changes of the liquid level having a greater impact on the reflections. 4. The medium present in certain application sites can also directly affect the transmission and reception of radar waves by the radar level gauge. This is manifested in terms of its impact on the antenna: for example, steam condensing on the antenna surface or materials crystallizing on it. On the other hand, the evaporation or atomization of the medium inside the tank can also affect the propagation of radar waves, thereby impacting the measurements. 5. Radar level gauges are often used in confined, small spaces rather than open, large areas. The signal emitted by a radar level gauge is an electromagnetic wave, which propagates in a divergent manner through space and possesses all the characteristics of electromagnetic waves, such as reflection, diffraction, and refraction. Any object in the propagation space causes reflections of signals. A confined space generates numerous reflected signals, including direct reflections from the object’s surface, as well as repeated reflections and oscillations of the signals (multiple reflections between surfaces).