G2 Gas Fitter Exam 2025 – 400 Free Practice Questions to Pass the Exam

Differential pressure switches are designed to detect differences between two pressure points, which can include both positive and negative pressures. This means they can effectively monitor a range of pressures, providing the ability to sense conditions where one side may be experiencing higher pressure than the other, or lower pressure, creating a differential. This capability makes them versatile tools in systems such as HVAC, industrial processes, and gas management.

Understanding their function is crucial because they can trigger alarms or control equipment based on the specific differential pressure, ensuring operational safety and efficiency. This dual capability to detect both positive and negative pressures allows for comprehensive monitoring of system conditions that could otherwise lead to malfunctions, thus emphasizing their importance in maintaining system integrity. Other pressure types focus on only a specific range, limiting their applicability in many scenarios.