The advantages of high frequency radar level gauge in measurement

High-frequency radar level gauge usually refers to the radar level gauge with a transmission frequency of 24/26GHz, or 80GHz. High-frequency radar has the following advantages: 1) High-frequency radar level gauge has high energy, small beam angle, and small antenna size. The advantage of high precision. 2) In some applications of small tanks with small straight diameters and short heights, when the medium or strong corrosive medium in the tank has volatile gas, if ultrasonic measurement is used, its effect will be poor, but if radar is used, the effect will be better. Good point, and the 6GHz radar antenna length (300-400mm) increases the blind area (about 600mm) unknowingly, that is because the 6GHz radar has poor directivity, and if it is in a small tank, multipath reflection will occur; the 80GHz radar frequency is relatively high. High, shorter antenna, good directional performance, these aspects overcome the shortcomings of 6GHz radar, so it is very suitable for small tank measurements. 3) Due to the harsh on-site environment, dirt, water vapor, etc. will accumulate on the radar antenna over time. The 80GHz radar antenna is small, and the addition of a radome can greatly improve the impact of dirt and water vapor. The 6GHz radar antenna is large, and it is difficult to add a radome. The instrument is large as a whole, easy to attach and difficult to clean. 4) Due to the good directionality of the 80GHz radar, in many harsh working conditions, the radar can be installed outside the container for measurement through simple isolation. 5) Since the high-frequency radar level gauge has the advantages of energy concentration and good directionality, it is especially suitable for liquid level measurement in petrochemical, chemical, non-ferrous metal and other industries, because most of these industries have the characteristics of small dielectric constant of the measurement medium, container It has the characteristics of small diameter, small opening size, small measurement control range, small blind area of ​​the measuring instrument, strong corrosiveness such as acid and alkali, and many interferences of stirring and heating coils.

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