Reasons and solutions for no echo of radar level gauge

What should I do if the radar level gauge has no echo? The main reasons why the radar level gauge has no echo 1. The antenna of the radar level gauge has a lot of attachments, which causes the electromagnetic wave to be reflected back as soon as it is emitted, and even cannot be emitted, so there will be no echo phenomenon. Especially the highly viscous medium that is easy to condense, and the radar level gauge is installed at a lower temperature position on the top of the storage tank, so the volatilized medium vapor will be particularly easy to adhere to the radar antenna, resulting in difficulty in electromagnetic wave emission, and the situation is serious. When the antenna is damaged, it may even become coke on the antenna. 2. In the clear space between the liquid under test and the radar antenna, the vapor concentration of the gas phase medium is too high, which causes the energy loss of the electromagnetic wave in the space propagation is too large, and even the reflected wave cannot reach the receiver of the radar level gauge at all. For example, when the liquid under test has heating requirements, or when the liquid under test contains moisture, the volatile water vapor absorbs the energy of electromagnetic waves more seriously, resulting in the energy attenuation of electromagnetic waves being too large and unable to reach the radar receiver. 3. The installation position of the radar level gauge is too close to the container wall, or is not perpendicular to the measured liquid level, causing electromagnetic waves to irradiate on the inner wall of the container during propagation and to be reflected back in advance; the electromagnetic waves have no original path during the reflection process of the measured liquid level. Return (when shooting obliquely), so that the radar level gauge cannot detect the reflected electromagnetic wave. 4. When measuring liquid with low dielectric constant, the phenomenon of wave loss often occurs due to the weak reflection ability of the liquid. 1. Clean the attachments on the antenna and install the antenna casing; 2. Check the installation position of the instrument, or consider installing a larger size antenna. 3. When measuring liquids with low dielectric constant, the application parameters should be set according to the process characteristics in the container. In addition, when there is thick and thick foam on the surface of the medium, the measurement error of the radar level gauge will be large, or even impossible to measure. Therefore, the radar level gauge also has its own limitations. Related product links: 922.html
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