A capacitive level sensor is a device used to measure the level of liquids or solids in a container. It operates by detecting changes in capacitance caused by the presence of a material between its electrodes. When the level of the material changes, the capacitance also changes, allowing the sensor to determine the level accurately. These sensors are commonly used in various industries, including water treatment, food and beverage, and chemical processing. They are valued for their non-contact measurement capabilities, which help prevent contamination and wear, making them suitable for a wide range of applications.