Kromschroder Gas pressure switch DG12IG-4 84447082

The Kromschroder DG12IG-4 gas pressure switch (SKU 84447082) is a diaphragm-type pressure switch designed to monitor pressure changes in gas or air systems. It features a silicone-free NBR diaphragm, a lower housing made of AlSi 12, and gold-plated contacts. The switch has an IP 65 protection class, safety class 1, and connects via screw terminals with an M16 x 1.5 line entrance. It weighs 321 g and complies with EN 13611:2015+AC:2016 and EN 1854:2010 standards, with CE product ID CE-0085AP0467.

When selecting a pressure switch of this type, ensure the adjusting range, connection type, and line entrance thread match the system requirements. Verify the diaphragm material compatibility with the media (e.g., gas or air) and check the protection class for the installation environment. The switch should be mounted with the diaphragm in the correct orientation, and the electrical connections must be made via screw terminals with appropriate cable glands.

Common failure modes for diaphragm pressure switches include diaphragm rupture or leakage, which can cause the switch to fail to detect pressure changes, leading to improper burner operation or safety shutdowns. Gold-plated contacts may degrade over time, causing intermittent electrical signals. Check for signs of corrosion, wear, or contamination on the diaphragm and contacts, and verify the switch's response to pressure changes using a manometer.