Radar level gauge antenna classification

What are the classifications of radar level gauge antennas? What are the types of radar level gauge antennas? Radar level gauges can be used for continuous measurement and have the advantages of low maintenance, high performance, high accuracy, high reliability, and long service life. Compared with contact instruments, it has great advantages. Microwave signal transmission is not affected by the atmosphere, and can meet the requirements of harsh environments such as volatile gases, high temperature, high pressure, steam, vacuum and high dust in the process. The following is the classification of radar level gauge antennas: 1) Rod antenna: suitable for measuring corrosive media, the working pressure can reach 1.6MPa, the temperature of the measured medium can reach 200 °C, the emission angle is large, generally at 30 °, the signal-to-noise The ratio is small and the accuracy is low, but it is easy to clean. It is often used to measure tanks and corrosive media with good operating conditions, large diameters, and small measurement ranges. 2) Flare antenna: The horn of the horn antenna has a large diameter and good transmission and reception performance. This radar is suitable for most measurements, the working pressure can reach 6.4MPa, the temperature of the measured medium can reach up to 350°, and the focusing performance is good, and the emission angle is smaller than that of the rod antenna. It is used for high frequency radar level gauge, with small emission angle and high accuracy. Many buffer tanks, storage tanks, reaction tanks, etc. use this type of antenna, but it is not suitable for the measurement of corrosive media. 3) Parabolic antenna: This is a new type of antenna, which is mostly used in radars with high frequency emission. Since its emission angle is only 3.5°, it is very suitable for measuring higher targets and avoiding obstacles. 4) Guided wave radar: Send and receive electromagnetic waves through guided wave metal or cable, which is a contact measurement. Due to the small influence on dust, steam, and the medium attached to the wave guide rod. 5) Sleeve antenna: When the dielectric constant is small (1.6~3) or the liquid surface produces continuous eddy current or the device in the container causes false reflection, this type of instrument should be selected. The casing has a focusing effect on the radar wave, and the antenna is installed in the still-pipe or bypass pipe. The inner diameter of the casing has an impact on the propagation time of the radar wave, so when setting the parameters, the parameters of the inner diameter of the casing should be set to compensate the in-travel time.
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