Kromschroder Gas vacuum sensor DG1,5IG-4 84447092

Kromschroder DG1,5IG-4 (SKU 84447092) is a diaphragm pressure switch for gas and air systems. It monitors pressure changes, providing control over both increase and decrease in pressure. The adjusting range is -1.5 to 3 mbar. It has a glass fibre reinforced PBT plastic body with an AlSi 12 lower housing, and an NBR diaphragm. It is silicone-free and designed for low gas release. Gold-plated contacts are used for negative pressure gas applications. Weight: 321 g. Safety class 1.

When replacing a pressure switch of this type, verify the adjusting range matches your application. Also confirm the conduit thread size (frequently M16 x 1.5) and the cable clamping range. The electrical connection is via screw terminals; check the available space and enclosure rating. For gas applications, ensure the switch is suitable for the media and that any gold-plated contacts are specified if negative pressure is involved.

Pressure switches of this kind can fail due to diaphragm fatigue or leakage. Regular tightness checks are recommended; functional capability can be tested by pressure reduction monitoring (e.g., with a PIA check valve). If used with biogas, inspect at least every six months.