The diaphragm-sealed pressure gauge is a precision pressure measuring instrument specifically engineered for micro-pressure, negative pressure, and low-pressure conditions. This essential tool features a diaphragm—a thin-walled, box-shaped element constructed from two corrugated diaphragms welded together—as its primary pressure sensing component, complemented by a robust sealed isolation structure. Ideal for measuring humid, corrosive, or slightly dusty gas and liquid media, this gauge is widely utilized in low-pressure monitoring applications across various industries, including ventilation, gas management, and environmental protection.

The innovative sealing and isolation system consists of an isolation diaphragm, a sealed cavity, and a special filling fluid. This design effectively isolates the measured medium from the diaphragm, safeguarding it against corrosion and blockage, thus enhancing the gauge's longevity and reliability.

At the heart of this instrument is the diaphragm pressure-sensing element, which features two concentric corrugated metal diaphragms that are welded together. When pressure is applied, the diaphragm experiences axial elastic deformation that is linearly proportional to the measured pressure, ensuring accurate readings and performance.

The indicating mechanism incorporates a linkage, gear transmission system, and pointer scale. This mechanism amplifies the diaphragm’s elastic deformation and translates it into pointer deflection, permitting a clear and immediate visual representation of the pressure value. As a leading product from China, we proudly partner with reputable suppliers and manufacturers to ensure high-quality standards and reliable performance for all industrial applications.