The diaphragm pressure gauge flange corrosion is quite evident, and the extent of the corrosion is astonishing. The material of the flange is SUS316 stainless steel, which should possess excellent corrosion resistance. However, how did the corrosive medium enter the "cavity"? The manufacturers observed a bend-shaped crack of about 35mm on the top of the diaphragm. It is evident that the corrosive medium entered the flange cavity through this crack, reaching the spring tube weld. Over time, this caused the flange to corrode and penetrate to the edges, further corroding the diaphragm weld, leading to "unseating" of the diaphragm. This could allow compressed air to directly冲入spring bend tube, and condensation water to accumulate.

Improvement Measures:

As a user of diaphragm pressure gauges, it is crucial to enhance management and properly store these gauges, especially those with flanged diaphragm pressure gauges. The diaphragm thickness is only 0.1mm or thinner, and improper placement can cause minor damage to the diaphragm or, worse, break it, rendering the diaphragm pressure gauge inoperable.

2. Before installation and use, inspect the diaphragm pressure gauge for any visible issues, such as whether the pointer is at zero, if there are any leaks, or if the flange diaphragm is damaged, etc. If any abnormalities are found, report them to the relevant department immediately and contact the manufacturer for resolution.