Kromschroder Differential pressure switch DG6TG-22K2 84447803

The Kromschroder DG6TG-22K2 (SKU 84447803) is a differential pressure switch designed for monitoring gas and air pressures, including biologically produced methane. It has an adjustment range of 0.5–6 mbar, with a hand wheel for setting the switching point. The device features NPT internal threads, two pressure connections, and an IP54 protection class. It includes a red/green pilot lamp for 24 V and gold-plated contacts for durability. The electrical connection is via screw terminals and 1/2 NPT conduit.

When selecting a pressure switch of this type, ensure the pressure range, connection thread, and electrical ratings match the application. Verify the number of pressure connections and the protection class required for the environment. The switch may be mounted directly or with brackets, depending on the model. Always compare the adjustment range and switching differential to the system's operating parameters before ordering.

Common failures include loss of calibration, sticking contacts, or diaphragm damage, leading to incorrect pressure readings or failure to switch. Symptoms may include burner lockouts, erratic operation, or no response to pressure changes. Check the switch by comparing its setpoint against a known pressure source and inspect for physical damage or contamination.