The antenna is the eye of the radar level meter, and the shape of the antenna must be suitable for the physical properties of the electromagnetic wave. The shape of the antenna determines the focus and sensitivity of the radar wave, just like the sensitivity of a microphone. Therefore, the applicable environment of radar level meters with different antennas is different. This requires us, when selecting the model, we should choose the radar level meter with corresponding antenna according to the characteristics of the working conditions. In the following, the specific radar level meter from the antenna to see how to select the problem.

1、The horn mouth antenna has good focusing characteristics and can be applied to most of the occasions. The working pressure can reach 64bar (1bar=100kPa). If the corresponding cooling measures are used, the temperature of the measured medium can reach 1000℃. In the field many storage tanks and reaction tanks choose this type of antenna, but not for corrosive media measurement.

　　2, rod antenna installation flange size is small, chemical stability is very good, easy to clean, insensitive to the adhesion of condensate, especially suitable for measuring corrosive media, working pressure up to 16 bar, the temperature of the measured medium up to 200 ℃. Its emission angle is large, the signal-to-noise ratio is small, commonly used to measure the better conditions of the tank and for the measurement of corrosive media.

3、Flange down type antenna is suitable for high temperature medium, corrosive medium or measurement environment that can't be installed on top.

　　4、Installation of casing antenna: casing has focusing effect on radar wave. When the medium dielectric constant is low (1.6~3) or the liquid surface produces continuous eddy current or the device in the vessel causes false reflection, this type of table can be selected. The antenna is installed in a wave guide tube or in a bypass tube, and the casing will have an effect on the running time (depending on the casing inner diameter), so the inner diameter of the casing should be entered into the electronic component to compensate for the change in running time. In addition it is required that the measured medium has a relatively good flow and is not easy to form a hang-up.

5, the material of the shell: aluminum shell meter is not resistant to the corrosion of alkali, in this occasion try to use plastic.

　　6, tank, tank is relatively high, it is appropriate to use parabolic antenna, because its aggregation is good.

　　The above is "from the antenna shape to analyze how to select the radar level meter" related to the introduction, such as to learn more level switch (level switch, level switch), level meter (level meter, level meter) and other level measurement instrument knowledge, welcome to pay attention to and consult us!