Kromschroder Gas pressure switch DG500U-5 84447556

The Kromschroder DG500U-5 is a diaphragm pressure switch designed to monitor pressure fluctuations in gas or air environments. It features a glass fibre reinforced PBT plastic housing with a lower section made of AlSi 12, and a silicone-free NBR diaphragm. The switch has a screw terminal electrical connection and an M16 x 1.5 line entrance thread. It complies with EN 1854:2010 and carries CE product ID CE-0085AP0467, with safety class 1.

When selecting a pressure switch of this type, ensure the connection thread size, electrical connection type, and safety class match the application requirements. The switch should be installed with the diaphragm oriented correctly for the intended pressure monitoring direction. Verify that the medium and ambient temperature ranges are suitable for the installation environment.

Common failure modes for diaphragm pressure switches include diaphragm rupture or leakage, which can cause the switch to fail to actuate or to actuate at incorrect pressures. Symptoms may include burner lockouts, erratic operation, or failure to detect pressure changes. Check the diaphragm for cracks or deformation and verify the switch operation with a manometer.