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In daily life, when we buy things, we often say, "Whether something is good depends on its appearance first." In fact, radar level meters are no exception. When choosing a radar level meter, you must first look at its shell. It can be said that the shell of the radar level meter has a direct impact on the performance, quality and reliability of the instrument. Today I will show you some knowledge about the shell of the radar level meter. Shell material There are three main materials for the shell of radar level meter, namely aluminum shell, plastic shell and stainless steel shell. 1. Most of the aluminum used in the radar level meter housing is cast aluminum. Cast aluminum mainly has four major properties, namely safety, durability, plasticity and light weight. Safety mainly starts from two aspects. Aluminum is very light in weight and is not prone to danger during handling, installation and maintenance. In addition, cast aluminum has undergone very strict experiments during the manufacturing process, so cast aluminum has strong resistance to certain phenomena (wind pressure, weathering, etc.). Durability means that cast aluminum is not easy to oxidize and rust, which is due to the strong stability of aluminum. Plasticity means that aluminum is very malleable and can be used in many places. Being lightweight, in addition to being safer, they are also easier to install and maintain. 2. The biggest features of the plastic shell radar level meter are good insulation and corrosion resistance. 3. Stainless steel shell, mostly made of 304 and 316L materials. 304 stainless steel has high temperature resistance and high toughness. The most significant feature of 316L is corrosion resistance. Warm reminder: The media measured by the radar level meter include corrosive liquids such as sulfuric acid and nitric acid, as well as liquids that contain steam or volatilize, such as sewage and filtered water. The radar level meter is installed in storage tanks and reaction tanks where temperature and pressure change. From the perspective of the working conditions above the radar level meter, aluminum, plastic and stainless steel are all suitable for making the casing of the radar level meter. However, in order to save costs, some manufacturers choose to use recycled aluminum to make watch cases. The chemical composition of recycled aluminum is unqualified, the plasticity is poor, and the tensile strength is very low. Moreover, the thickness of the recycled aluminum oxide film is thin, and the porosity of the coating after electroless nickel plating is very high. Due to the large reduction in sealing time, the loss of chemical reagents is reduced, and the corrosion resistance is improved. * * reduce. During the storage and use of the product, once it comes into contact with corrosive media in the air, it will accelerate the corrosion of the base body of the aluminum alloy shell, causing the coating to bulge and fall off. Therefore, using a casing made of this material will reduce the reliability of the entire machine, seriously affect the product quality and measurement results of the instrument, and is very unsafe. To sum up, the shell of the radar level meter has a great influence on the performance of the entire instrument. When purchasing, you must pay attention to choosing a manufacturer with guaranteed brand quality, and at the same time, you should choose based on your own working conditions.