A capacitance manometer is a device used to measure pressure by detecting changes in capacitance. It consists of a diaphragm that flexes in response to pressure changes, altering the distance between two conductive plates. This change in distance affects the capacitance, which can be measured and converted into a pressure reading. These manometers are highly accurate and are often used in vacuum applications and industrial processes. They can measure a wide range of pressures, making them suitable for various fields, including semiconductor manufacturing and laboratory research. Their reliability and precision make them essential tools in many scientific and engineering applications.