A non-contact level sensor is a device capable of measuring the height and level of a liquid without the need for direct contact with the liquid. Usually, these sensors use some non-contact technology for liquid level measurement, such as ultrasonic, laser, microwave, or other physical principles such as capacitance, magnetism.
Traditional contact level sensors usually need to be measured by contact with a liquid, which makes the request for level sensors somewhat limited because they are susceptible to immersion and chemical corrosion of the liquid. The non-contact level sensor can be measured without contacting the liquid, so it has many advantages, such as high precision, long service life, low maintenance cost, and suitable for a variety of liquids, so it has been widely used in modern industry.
