The radar level gauge instrument should pay attention to some problems in the process of use, there are many customers in the consultation, the following we will talk about these points of attention.

The central axis of the transmitting antenna is kept perpendicular to the surface of the material to be measured. The distance between the well and the tank wall is at least 30 cm. The front end of the antenna horn should extend into the interior of the tank to reduce the loss of transmission energy caused by the installation and the welding between the equipment. Avoid installing in the center of the slot as this will increase false echoes. Do not install on the top of the feeding port, mainly to prevent the generation of false echoes that may have a much larger amplitude than the effective echo of the measured liquid surface reflection when feeding.

When measuring the liquid level of the container with stirring, the swirl area formed when the stirrer stirs should be avoided as much as possible to eliminate the attenuation caused by scattering of the irregular liquid to the microwave signal as much as possible. When the dielectric constant of storage tank materials is less than 7, such as fiber-reinforced glass, polyethylene, polypropylene, or lead-free glass, if the Ken wall thickness is moderate, it can be installed outside the tank. If the media reservoir is a spherical container, it should be installed by using a wave guide tube or a bypass tube, which can eliminate the interference of multiple echoes caused by the shape of the container. Improve signal to noise ratio. When measuring media with small dielectric constants (such as liquefied gas, gasoline, diesel oil, transformer oil, etc.), these media will produce relatively large attenuation of microwaves. In order to increase the reflected energy to ensure measurement accuracy, they should also be used. Wave tube installation.

When selecting a type, the specific conditions of the measured material should be fully considered. Select the corresponding connection flange according to the process pressure and temperature: according to the dielectric constant of the range and medium, shaking or vortex, and foam, determine the antenna size, the larger the range, the lower the dielectric constant, the larger the antenna size should be; If the measurement occasion is strongly corrosive, a rod antenna measuring system coated with PTFE shall be used; if the measuring occasion is high temperature (above 200°C) and high pressure, high temperature type and high pressure type with antenna extension tube shall be selected; if the medium Condensation is easy to use pole antenna system with shielded tube; for the food, health industry, there are sanitary products to choose from.