What is a radar level sensor used for? People who have a little knowledge of radar level meters must blurt out that it is used to detect level, and in the production process, it is often necessary to deal with a large number of solid materials, whether in containers or other sites, which occupy a certain space or pile up to a certain height. The phase interface position of two different phase objects is called the level, and the instrument for the level progression and control is called the level measuring instrument, and the radar level sensor is one of them. So what are the purposes and characteristics of level detection?

The phase interface of the object in the industrial process has the phase interface of gas and liquid, that is, the liquid level, the phase interface of gas and powder-granular solid materials, called the feeding surface and so on. The object of level measurement is liquid, powder, particle, block and so on. For liquid, slurry and other fluid objects, usually stored in a certain shape of containers such as: tanks, towers, silos, underground tanks or pools, the surface is flat. For objects with poor fluidity such as powder particles, the material surface and the horizontal surface have a certain repose Angle. The size of the Angle of rest depends on the surface characteristics of the material and the way of feeding and discharging. We also need to understand what is the purpose of using instruments such as radar level meters to check the level, first of all to correctly measure the height, volume or weight of the material stored in the container. Secondly, the level in the monitor is kept in a certain height or a certain height range required by the process; Or limit alarm or control on their upper and lower limit positions. Then monitor and adjust the balance of incoming and outgoing materials in the container according to the material to maintain the best production efficiency.

Then what are the characteristics of level detection, from the material level and liquid level respectively for example. From the material level, when the material is naturally deposited, the material surface has a certain resting Angle, which is related to the particle size, specific gravity, surface fluidity, and is related to the feeding or discharging, the feeding method, and the position of the feeding (discharging) port. At the same time, there will be retention area and accumulation of material on the wall of the bin when the material is in and out of the bin, and the material will friction or impact the measuring element when it is in and out of the material, and the material will be hung on the measuring element. From the perspective of liquid level, the liquid level fluctuates during the process, boiling, foam, suspended particles, bubbles, high viscosity and other conditions. At the same time, vacuum, high pressure, high temperature, steam or high temperature and high pressure exist simultaneously. There are also various corrosive agents present at the same time.

There is an old saying that knowing the why is also knowing the why, and understanding the purpose and characteristics of level measurement is of great help to better use radar level meter. This article is especially helpful for users who are about to use radar level gauges.