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In the chemical industry, corrosive and hazardous media are quite common. This article addresses the various containers, different types of media, and complex measurement environments encountered in the use of radar level gauges in this industry. Based on the measurement principles and characteristics of radar level gauges, it outlines the key points to consider for their installation. Features of the measurement principle of radar level gauges: Radar level gauges use electromagnetic wave pulses for measurement, with an operating frequency of 26 GHz and low beam energy. They can be installed in various metal and non-metal containers or pipes, and are capable of continuously measuring the level of liquids, slurries, and granular materials. Suitable for environments with large fluctuations in dust, temperature, and pressure, as well as those containing inert gases and steam. Radar level gauges cause no harm to humans or the environment, and they also have advantages such as being unaffected by the specific gravity of the medium, not being affected by changes in dielectric constant, and requiring no on-site calibration. Radar level gauges transmit and receive extremely short microwaves with very low power through an antenna system. Radar waves travel at the speed of light. Operating time can be converted into a level signal through electronic components. A special time extension method can ensure stable and accurate measurements in an extremely short period of time. Applications of radar level gauges in the chemical industry: Spherical tanks are also common in the chemical industry; their diameter is usually greater than 10 meters. They are often used for storing hazardous substances that are under pressure, require strong corrosion resistance, or are flammable and explosive. Due to their large volume capacity, non-contact radar level gauges are typically used for measuring these tanks, with a maximum measurement range of 30 meters and an accuracy of ±3 mm. Vertical tanks are commonly used in the chemical industry to store media at atmospheric pressure. Their capacity range is relatively large, typically between 10 and 30 m, and they often have internal floating roofs. When selecting a radar level gauge, it is necessary to consider whether there is a guide wave tube inside the tank; for tanks with such a guide wave tube, a contact-type guide wave radar level gauge can be used, while for those without one, a non-contact radar level gauge is appropriate. Process tanks have always represented a challenge in the chemical industry. These tanks are equipped with devices such as heating and stirring systems, which create conditions that prevent other measuring instruments from functioning properly. The non-contact flat-panel radar level gauge, on the other hand, is not affected by stirring or heating, allowing it to operate stably. Points to note when installing radar level gauges: (1) When measuring liquid materials, the axis of the sensor must remain perpendicular to the surface of the medium ； When measuring solid materials, since the solid medium has a heap angle, the sensor needs to be tilted at a certain angle. (2) Try to avoid having devices that cause false reflections within the emission angle. In particular, it is necessary to avoid having obstacles within the 1/3 conical transmission area closest to the antenna (since the closer the obstacle, the stronger the false reflected signals). If it truly cannot be avoided, it is recommended to use a refracting plate to deflect the overly strong false reflection signals. This reduces the energy density of false echoes, making it easier for the sensor to filter out false signals. (3) Avoid the feed inlet to prevent false reflections. (4) The sensor should not be installed at the center of the arch-shaped tank (as this will increase the false echoes received by the sensor), nor too close to the tank walls; the optimal installation location is at 1/2 of the container’s radius. (5) Avoid installing in areas with eddies. (6) If the sensor is installed on a pipe fitting, the antenna must extend out from the pipe fitting. The flared antenna should extend at least 10 mm beyond the connector. The method of increasing the diameter of the connector can be employed to reduce the interference echoes caused by the connector. Radar level gauges can be used to measure liquids, slurries, and other similar media, and they have strong resistance to temperature and pressure changes. Radar level gauges can be widely used in the chemical industry.