Thread Content
1. Avoid the feed inlet; firstly, one of the installation requirements is to stay away from the feed inlet. Because. During the injection of the material, reflection signals with amplitudes greater than those of normal measurements are generated. The false echo signals have much higher echoes, and these false echoes can have a significant impact on the measurements taken by radar level gauges. Therefore, try to avoid the feed inlet during installation. Additionally, such shading and rainproofing facilities should be used appropriately when installing them outdoors. As shown in Figure ①, this is incorrect: Do not install the gauge above the material inlet flow; cables or rods should be kept away from the material inlet. Figure ② shows the correct approach: Note that when installing outdoors, measures should be taken to provide shade and protection from rain. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307284&size=300x300&key=396905819b382451&nocache=yes&type=fixnone 2. Keep away from the mixer: In containers equipped with mixers, it is essential to make sure that the radar level gauge is installed away from the mixer. The fan blades that avoid the mixer generate irregular false signals during mixing. This false signal generates false echoes, which have a significant impact on the measurements taken by radar level gauges. This effect is particularly severe when measuring substances with relatively low dielectric constants, or when the presence of a stirrer exacerbates the issue; therefore, it is essential to make sure that the installation location is away from the blades of the stirrer. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307285&size=300x300&key=35f49ceebad4e78f&nocache=yes&type=fixnone3. It is necessary to ensure that the radar antenna is properly positioned, this applies to conventional contactless radars, whether they use rod antennas or horn antennas. We all need to ensure that this antenna extends at least inside the tank; in other words, its length must be at least 10 mm greater than that of the pipe connection. Only by ensuring that the antenna extends deep into the tank can we minimize the likelihood of receiving false signals. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307286&size=300x300&key=7d419ee8c6a666bc&nocache=yes&type=fixnone4. Make sure that the waveguide (cable) does not touch the bottom of the tank; when it does, strong false echo signals are generated as well. So, at least a distance of 1-5 cm from the bottom of the tank is required. Of course, this results in a blind area of 1-5 cm at the bottom; in other words, the closer the distance to the bottom of the tank, the smaller the blind area there. Remember, the waveguide must not come into contact with the bottom of the tank. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307287&size=300x300&key=783c341e49e7a2e2&nocache=yes&type=fixnone5. The installation location of the dome tank is important for such tanks. The instrument cannot be installed at the exact center of the vault. Because in addition to generating indirect echoes, it is also affected by multiple echoes. Multiple echo signals may be larger than the actual echo signals. It will generate false liquid level values that cause incorrect readings on the instruments. Therefore, when installing a dome tank, it is necessary to place the radar level gauge at the exact center of the tank roof. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307288&size=300x300&key=a4b7b4e808db0dd4&nocache=yes&type=fixnone6. The installation location of the conical tank: For this type of conical tank, if its top is flat, it is possible to install the instrument right in the center of the top, so as to ensure continuous measurement down to the very bottom of the conical tank. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307289&size=300x300&key=8c4f90003664d29b&nocache=yes&type=fixnone7. When measuring solid piles, the installation location of the solid material bin takes into account the fact that the pile itself creates a surface. Therefore, when selecting a radar level gauge, it is essential to choose one equipped with a universal flange. Adjust the universal flange to further fine-tune the angle of the radar antenna, aiming to align it with the opposite surface of the material pile. This ensures the accuracy of the measurements for this material pile. https://bbs.hcbbs.com/forum.php?mod=image&aid=2307290&size=300x300&key=d59c348551de3a89&nocache=yes&type=fixnone