The diaphragm-sealed pressure gauge is an essential instrument for accurately measuring pressure in various challenging applications. Designed specifically for corrosive, high-viscosity, and crystallizing media that may contain solid particles, this gauge effectively prevents direct contact between the media and the gauge mechanism, eliminating risks of blockage and corrosion. It comprises two primary components: a standard pressure gauge and a diaphragm sealing device, which includes the diaphragm body, diaphragm sheet, and sealing fluid.

The working principle relies on the pressure transmission through the deformation of the diaphragm. When the measured medium contacts the diaphragm, the resultant pressure induces elastic deformation. This deformation is transmitted through the sealing fluid—typically silicone oil or glycerin—to the elastic sensing element, such as a Bourdon tube, within the pressure gauge. The elastic sensing element translates the pressure change into a corresponding mechanical displacement, driving the pointer to indicate the accurate pressure value.

As a leading manufacturer and supplier in China, our factory produces high-quality diaphragm-sealed pressure gauges suitable for various industries, including petrochemicals, metallurgy, pharmaceuticals, food and beverage, and papermaking. Trust us for reliable pressure measurement solutions tailored to meet your specific needs.