What function does a pressure switch serve in a hydraulic system?

A pressure switch plays a crucial role in a hydraulic system by monitoring fluid pressure. It is designed to detect whether the pressure within the system has reached a specified threshold. When the pressure exceeds or drops below a predetermined level, the pressure switch activates or deactivates a connected device or sends a signal to the system controller.

This function is vital for maintaining safety and efficiency within hydraulic systems. For instance, if the pressure is too low, this might indicate a leak or failure that could affect system performance. Conversely, if pressure is too high, it may lead to equipment damage or system failure. By continually monitoring pressure levels, the pressure switch helps ensure that the hydraulic system operates within safe and optimal parameters.

Other options, such as indicating fluid flow rate, detecting fluid temperature, or measuring cylinder stroke, serve different functions and are typically managed by different components in a hydraulic system. Flow rate is monitored by flow sensors, temperature by temperature gauges or sensors, and cylinder stroke by position sensors, each of which plays its distinct role in the overall operation of the hydraulic system.