Kromschroder Air pressure switch DL5E-1 84444250

The Kromschroder DL5E-1 is a diaphragm pressure switch designed to regulate positive, negative, or differential air and flue gas pressures. It has an adjusting range of 0.4 to 5 mbar and is suitable for use with air or flue gas, but not flammable or aggressive gases. The switch features a glass fibre reinforced PBT plastic housing with low gas release, a tempered LSR diaphragm system, and a microswitch compliant with EN 61058-1. It is approved under CE-0085AP0466 and meets standards EN 13611:2015+AC:2016 and EN 1854:2010. The designed lifetime is 10 years, and it weighs 150 g.

When selecting a pressure switch of this type, ensure the pressure range, electrical connection (e.g., AMP plugs), and mounting configuration match the application. Verify the medium compatibility (air or flue gas) and that the switch is suitable for the required pressure type (positive, negative, or differential). Check the electrical ratings and standards compliance to ensure safe operation.

Common failure modes for diaphragm pressure switches include diaphragm rupture or leakage, leading to loss of pressure sensing or false triggering. Symptoms may include burner lockout, erratic operation, or failure to detect pressure changes. Inspect the diaphragm for damage, check for leaks in the sensing line, and verify the microswitch operation.