Gas flow in the hole will have the characteristics of ultrasound, and the cavity of the ultrasound intensity can be used as a basis to determine whether there is leakage. The closer to the leak point, the higher the intensity of ultrasound there will be. This feature can also be used to help find leaks. Water tanks and other sealed cavity are ideal targets for the use of ultrasonic leak detection. 

Ultrasonic leak detection is accurate and easy of use, which has been widely used in industrial production.