Advantages of radar level gauges in application fields

Compared with some traditional level instruments, radar level gauges have advantages in application technology in the following fields: (1) Complex working conditions such as high temperature, high pressure, corrosion, and stirring. Such as asphalt, acid and alkali tanks, reaction kettles, etc., mainly in chemical, petrochemical and other industries. (2) Blast furnace charge level, high temperature molten metal level. The temperature of the material to be measured in this type of working condition is relatively high. Due to heat radiation, the temperature at the installation position of the level gauge is very high, so a horn antenna with a curved extension tube is usually used. The electronic components are far away from the heat radiation area, and the stainless steel horn antenna can be damaged. higher temperature. The propagation and reflection of radar are not affected by temperature. Typical applications include blast furnace charge level measurement, molten steel level measurement, molten aluminum level measurement, etc. (3) Powder and granular material level. A dedicated radar level gauge is used to measure solid materials, and its signal processing software is different from the radar level gauge used to measure liquid levels. The powder material level (the ash warehouse of the power plant, the homogenization warehouse of the cement plant and the material level of the finished product warehouse) is generally conveyed pneumatically, and the space in the silo is very dusty. The cement homogenization silo also blows air from the bottom up, so the material surface is not very clear. The effect of ultrasonic measurement is not ideal. Due to the large dust in the space when blowing and feeding, the sound wave is greatly attenuated and no echo can be received, while the radar is rarely affected. Guided wave radar level gauge can also be used, the price will be cheaper, but because it is a contact type, installation and maintenance are more troublesome. (4) Precise measurement of liquid level in large storage tanks. Liquid level measurement of crude oil, refined oil tanks, liquefied petroleum gas, chemical liquids, etc., can be intrinsically safe or explosion-proof. The measurement accuracy of process-level instruments can reach ±3mm, and that of measurement-level instruments can reach ±1mm. In recent years, radar level gauges will gradually become the main instrument in this field.

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