Precautions when radar level gauge measures corrosive media

It is often encountered that there are corrosive media in the tank, such as sulfuric acid, hydrochloric acid, nitric acid and other media. The following introduces the matters needing attention when measuring corrosive media with the radar level gauge. First, according to the corrosive strength of the medium, select the appropriate antenna form of the radar level gauge and the medium measured by the material is relatively corrosive. It is necessary to choose an antenna with strong corrosion resistance. The antenna with strong corrosion resistance is installed in a tank, which can resist sulfuric acid. Long-term corrosion of other media, long-term durability. Usually when measuring corrosive media, the radar level gauge will choose PTFE antenna material. Second, determine the temperature properties of the measured medium. The measured medium temperature is high, and the medium will produce vaporization or steam in the tank. Vaporization or steam will affect the band propagation of the radar level gauge. The second is that the temperature is too high. The antenna in front of the liquid level gauge has a temperature range. Generally, the radar level gauge can withstand a temperature of 130 °C. If the temperature is too high, it is necessary to choose high temperature resistant materials and do heat dissipation. 3. On-site installation requirements Due to the strong corrosiveness of the on-site medium, after installation and debugging, all wire inlets must be sealed with waterproof glue, and the upper cover screws must be tightened. At this time, it is best to use a thick plastic bag to wrap the head of the entire radar level gauge, which is a low-cost and effective method. The installation angle should consider the absence of leakage. 4. Other attention requirements Because of the corrosiveness of the on-site measurement medium, the flange selection of the radar level gauge must consider corrosiveness, as well as accessories, meter heads, and other materials must consider corrosiveness.

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