Which component is responsible for monitoring cockpit differential pressure?

The Delta P regulator is the component responsible for monitoring cockpit differential pressure. This regulator plays a crucial role in maintaining the appropriate pressure levels within the cockpit by comparing the internal atmospheric pressure to a predefined threshold. It ensures that the difference in pressure (delta P) remains within safe limits, helping to prevent issues such as cabin decompression.

In contrast, the control valve regulator is primarily involved in regulating airflow and pressure to various systems but does not specifically monitor differential pressure. The dump solenoid is utilized to release cabin pressure but is not responsible for monitoring it. Lastly, the safety valve serves as a protective measure to release excess pressure but does not actively monitor pressure changes. Thus, the Delta P regulator stands out as the key component tasked with the crucial job of monitoring cockpit differential pressure, ensuring the safety and comfort of the occupants.