What are the types of pressure instruments?

There are several types of pressure instruments used to measure pressure, including manometers, pressure gauges, and pressure transducers. Manometers utilize a column of liquid to measure pressure differences, while mechanical pressure gauges often use Bourdon tubes or diaphragms to display pressure readings. Pressure transducers convert pressure into an electrical signal for digital displays or control systems. Additionally, piezometers and absolute pressure sensors are specialized instruments used in specific applications, such as groundwater monitoring and vacuum measurement.