What Is a Capacitance Manometer?
A capacitance manometer is a device that measures pressure by detecting changes in capacitance caused by pressure variations. It operates on the principle of capacitance fluctuation within a pressure sensor, which alters in response to the measured pressure.
There are two primary types of capacitance manometers: single-diaphragm and multiple-diaphragm. Single-diaphragm manometers, characterized by their straightforward design, are cost-effective and widely used for general applications. In contrast, multiple-diaphragm manometers provide greater measurement accuracy, making them ideal for high-precision tasks.
These manometers are versatile, suitable for measuring pressure in various media, including liquids such as water, oil, and chemicals, as well as gases. The device comprises three main components: a pressure sensor, signal processing circuitry, and a display unit. The metal pressure sensor detects pressure-induced capacitance changes, and the signal processing circuit converts these changes into readable pressure values, and the display unit showcases these values for user interpretation.