Kapasitanssianturissa

Kapasitanssianturi is a type of sensor that measures capacitance. Capacitance is the ability of a system to store electric charge. A basic capacitor consists of two conductive plates separated by a dielectric material. When a voltage is applied across the plates, electric charge accumulates on them.

Kapasitanssianturit work by measuring the change in capacitance caused by the presence or movement of an object. The object, often conductive or with a different dielectric constant than the surrounding medium, acts as one of the plates or changes the dielectric properties between the sensor's plates. For example, in a capacitive proximity sensor, an object approaching the sensor's conductive plate will alter the capacitance. The sensor circuitry detects this change and signals the presence of the object.

These sensors are widely used for non-contact detection of various materials, including metals, plastics, and liquids. Their applications are diverse, ranging from industrial automation and level sensing in tanks to touch interfaces on electronic devices. The sensitivity and range of a kapasitanssianturi can be adjusted by altering the size of the conductive plates, the distance between them, and the dielectric material used. They are known for their robustness and ability to operate in harsh environments.