The difference between microwave level switches and tuning fork level switches

　　Firstly, a microwave level switch is a switch that uses microwaves to infer the height and position of materials. It detects the presence or absence of materials by emitting microwave signals and receiving echo signals. Its advantage is that it can be suitable for environments with high temperature, high pressure, easy accumulation of dust and corrosive media, and its measurement range is wide, reaching about tens of meters. Therefore, microwave level switches are commonly used for detecting powdered or granular materials, such as cement, coal powder, food raw materials, etc.

　　Correspondingly, the tuning fork level switch is a switch that uses sound waves to detect the presence of materials. It pairs a closed vibration plate with a low-frequency piezoelectric resonator. When the plate comes into contact with the material, the vibration of the material will be fed back to the plate, and this feedback can be induced by the resonator. Its advantages are simple structure, easy maintenance, small size, light weight, and it is also suitable for high temperature and corrosive media environments. The tuning fork level switch is usually used for the detection of liquid and powdered or granular materials, such as wheat flour, flour, cement, granular chemicals, etc.

　　In fact, in the process of level detection, the microwave level switch and the tuning fork level switch are not mutually exclusive. They can complement each other according to the different material properties and detection requirements. The comprehensive selection of different types of level switches can provide more effective and accurate level detection and control indicators, and also better support industrial automation and production processes.

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