Capacitancemanometrejä

Capacitancemanometrejä, known in English as capacitance manometers, are instruments used to measure pressure. They operate on the principle of capacitance, which is the ability of a system to store an electric charge. In a capacitance manometer, pressure is applied to a diaphragm, which causes it to deflect. This deflection changes the distance between the diaphragm and a fixed electrode, altering the capacitance of the system. By measuring this change in capacitance, the pressure can be determined.

These devices typically consist of a sensing element with a movable diaphragm and one or more fixed electrodes. As pressure varies, the diaphragm moves closer to or further from the electrodes, changing the capacitance. This change is then converted into an electrical signal, often a voltage or current, which is proportional to the applied pressure. Capacitance manometers are known for their high accuracy, stability, and fast response times. They are often used in applications requiring precise pressure measurements, such as vacuum systems, gas flow control, and calibration laboratories. They can measure both gauge and absolute pressures, depending on the specific design. Their ability to withstand corrosive environments and operate over a wide temperature range also contributes to their versatility.