Needle tunnel waterproof board weld seam air tightness detector detection method

The DP-SFQM-1 Needle Tunnel Waterproof Board Weld Seam Airtightness Tester is a reliable tool used to check the integrity of welded seams on waterproof membranes. This device ensures that the seams are properly sealed, preventing any potential leaks in construction or industrial applications.

To perform the test, connect the No. 5 injection needle to the pressure gauge and use an air pump to inflate the system. Stop inflating once the pressure reaches 0.25 MPa. Allow the system to sit for 15 minutes. If the pressure drop is less than 10% during this time, it indicates that the weld seam is intact and airtight. However, if the pressure drops too quickly, it suggests there may be a leak in the welding area.

In such cases, apply soapy water to the suspected area. If bubbles appear, it confirms the presence of a leak. This simple yet effective method helps identify weak points in the welding process, ensuring high-quality and durable waterproofing solutions. The DP-SFQM-1 is widely used in industries where sealing integrity is critical, such as roofing, tunneling, and civil engineering projects.