Kromschroder Gas pressure switch DG6U-6T 84447253

The Kromschroder DG6U-6T is a diaphragm pressure switch designed to monitor pressure changes in gases or air, responding to deviations from a setpoint. It operates within a pressure range of 0.4 to 6 mbar and switches with rising positive pressure. The trigger level is adjusted via a handwheel, and the switching element is a microswitch with a switching contact. The housing is made of glass fibre reinforced PBT plastic with a lower housing section of AlSi 12, and the diaphragm is NBR, silicone-free. It features a 4-pin plug with socket, screw terminals, and a line entrance thread of M16 x 1.5. The device weighs 316 g and is rated for safety class 1.

When selecting a pressure switch of this type, ensure the pressure range, connection thread, and electrical connection match the application. The switch must be compatible with the gas or air type and the required switching function (e.g., rising pressure). Mounting should consider the line entrance size and clamping range for the cable. Verify the supply voltage and that the switch is suitable for the environmental conditions, including temperature limits.

Common failures include diaphragm rupture or leakage, leading to loss of pressure monitoring and incorrect switching. Electrical contact issues may cause intermittent operation or failure to switch. Check for physical damage, contamination, or corrosion on the terminals and diaphragm. If the equipment does not respond to pressure changes, test the switch with a manometer and verify continuity.