What device is used to measure hydraulic pressure in a system?

The device used to measure hydraulic pressure in a system is a manometer. A manometer works by balancing the fluid pressure against a column of liquid and is particularly effective for measuring pressure in various applications, including hydraulic systems. It provides accurate readings of the pressure levels, which is crucial for monitoring and maintaining the functionality and safety of hydraulic systems.

Flow meters, while essential for measuring the flow rate of fluids, do not directly measure pressure; instead, they focus on the volume or mass of fluid passing through a particular point in a given time frame. Accumulators are used to store hydraulic fluid under pressure and help manage the pressure within the system but do not measure pressure themselves. Actuators convert hydraulic pressure into mechanical motion, serving practical applications in machinery, but they also do not provide pressure measurements. Thus, the manometer is specifically designed for pressure measurement, distinguishing it from the other options.