Capacitive Level Sensors
Capacitive Type Level Sensors Capacitive type level switches and transmitters are widely used in industrial level measurements. The capacitor is made up of two plates and isolated by some isolators having a fixed dielectric constant. But in level measurement we use a variable capacitor, capacitance can be changed by changing the gap between the two plates or by changing the dielectric constant, so dielectric constant changes and proportional to that capacitance also changes. Capacitive level switches Capacitive level switches are used in industrial applications for the point-level sensor to detect a high or low level of a vessel or tank. Working principle of capacitive level switch In capacitance type level switches, there are two main units: 1. Capacitive probe 2. controller The capacitive probe is made up of two plates mostly in the shape of two rods. and the material we want to sense acts as a gap between the plates. As material touches, the sensor probe, the...