What does a pressure switch do?

A pressure switch is a critical component in pneumatic systems that monitors pressure levels within a designated range. Its primary function is to activate or deactivate an electrical circuit when the pressure reaches a specific set point. This is essential for maintaining safe and efficient operations in pneumatic systems.

When the pressure in the system reaches a predetermined threshold, the pressure switch completes or breaks an electrical circuit, which can activate or deactivate devices such as compressors, alarms, or other control systems. This automatic monitoring helps prevent pressure levels from exceeding safe operational limits, ensuring that the equipment functions correctly while protecting against potential system failures.

Maintaining constant pressure, regulating air temperature, and changing the direction of airflow are not functions performed by a pressure switch. Rather, those tasks are typically the responsibility of other components within the pneumatic system. For instance, pressure regulators maintain pressure, temperature controllers manage air temperature, and valves control the flow direction of air. Each plays a unique role, but the pressure switch specifically focuses on monitoring pressure levels and controlling electrical circuits in response.