Air tightness detectorThe principle: Make a relatively sealed cavity, put the product to be tested for leakage into it, and then input the compressed air with accurate pressure control into the cavity through the air tightness testing instrument, and then automatically disconnect the inflatable air source. The solenoid valve accurately controls the air flow balance for the specified time, and then turns off the balancing solenoid valve (at one end of the balance valve).The test piece is connected to the test piece, and the other end is connected to a non-leakage standard piece). The air tightness test uses a precision micro-differential pressure sensor connected to the same air path of the test piece and the standard piece to measure the differential pressure value between the standard piece and the test piece within a specified time. Then, the pressure drop caused by the actual leakage of the test piece is obtained through temperature compensation, thereby determining whether the test piece is leaking.This is the differential pressure testing method of the air tightness detector.

The air tightness of the device (that is, the sealing performance) is one of the important factors in the quality of the device.The method to check the air tightness of the device is: the air tightness tester puts the device to be tested for leakage into a relatively sealed mold cavity, then turns on the air source, and rushes gas with a certain pressure value into the mold cavity through the leakage detector, which is the air tightness test.Then disconnect the air source and stabilize the pressure for a certain period of time. Then the air tightness detection system starts to test the air pressure changes in the mold cavity to obtain the pressure difference. After calculation, the leakage valuecan be obtained, and the tightness of the device can be determined based on the leakage value.

Hirays leak tester has a wide range of uses and a large customer base.For example, it can be used for waterproof detection of cameras, IP waterproof level of wires, seal detection of battery packs, leakage detection of valves and pipelines, air tightness detection of medical equipment, etc.