What does a pressure gauge indicate in hydraulic systems?

A pressure gauge in hydraulic systems is specifically designed to measure the pressure of the hydraulic fluid. This is crucial for determining the efficiency and effectiveness of the hydraulic system. By providing a real-time reading of the fluid pressure, operators can assess whether the system is functioning within the designated pressure range, ensuring proper operation and safety.

Understanding the pressure helps in diagnosing issues such as leaks, blockages, or pump failures. Maintaining the correct pressure is vital for the proper functioning of hydraulic machinery, as it directly influences the performance and responsiveness of hydraulic actuators and other components. Other options, such as temperature, flow rate, and viscosity, are important parameters in hydraulic systems but are monitored by different instruments. Therefore, the primary role of a pressure gauge is to indicate the pressure of the hydraulic fluid.