What is a Diaphragm Pressure Gauges? A Diaphragm Pressure Gauges uses a flexible diaphragm to measure pressure while isolating the internal mechanism from corrosive, viscous, or contaminated process media. Where are diaphragm pressure gauges used? They are commonly used in chemical, pharmaceutical, food processing, oil & gas, petrochemical, water treatment, and other industries handling aggressive or viscous fluids. What are the advantages of a Diaphragm Pressure Gauges? These gauges provide accurate pressure measurement, protect the sensing element from corrosive media, reduce maintenance, and offer a longer service life compared to standard pressure gauges.