Capacitive displacement sensor

Capacitive displacement sensors are a kind of non-contact displacement sensor, measuring the position and change of position in capacitive materials to a high resolution.^[1] They are also able to measure the thickness or density of non-conductive materials.^[2] Capacitive displacement sensors are used in a wide variety of applications including semiconductor processing, assembly of precision equipment such as disk drives, precision thickness measurements, machine tool metrology and assembly line testing. These types of sensors can be found in machining and manufacturing facilities around the world.