What are the classification of air tightness tester?

Air tightness tester, also known as leak detector or leak detector, is mainly used for sealing test of packaging bags, bottles, tubes, cans and boxes in food, pharmacy, medical devices, daily chemicals, automobiles, electronic components, stationery, consumer electronics and other industries.

According to the test principle, it can be divided into positive pressure method and negative pressure method.

Positive pressure method: using the principle of positive pressure inflation test, quantitatively measure the sealing leakage of various packaging, bottle caps, hose caps and other products; The equipment provides various test modes, such as fracture test, creep test and creep-to-fracture test. By adding accessories, we can carry out the seal strength test of opening package, hose seal test, package restraint plate test, aerosol valve seal test and medicinal blister seal test.

Negative pressure method: by vacuumizing the vacuum chamber, the pressure difference between the inside and outside of the sample immersed in water is generated, and the sealing performance of the sample is judged by observing the air leakage of the sample or the shape recovery of the sample after expanding and releasing the vacuum. The equipment is easy to operate, the test and judgment are simple and intuitive, and the application range is wide.