Air tightness detectors are usually used to test the waterproof or sealing performance of various electronic products and non-electronic products. It can be used for air tightness testing alone, or product tightness testing on production lines or assembly lines, so as to determine the sealing performance of products. , to select the leaked products in time to avoid the flow into the next process and affect the qualification of the products. The air tightness detector can be used for waterproofing of watches, earphones, walkie-talkies, electric toothbrushes, electric shavers, outdoor LED lights, auto parts (battery packs, headlights, ECU, etc.), die-casting parts, blow-molded parts, etc. Testing and air tightness testing.
When using the air tightness detector, you should understand the testing principle of the air tightness detector, and choose a reasonable air tightness testing and waterproof testing scheme based on factors such as the shape and characteristics of the product, so as to avoid damage to the product during the testing process. . In general, the air tightness detector is a device with two pressure modes, either positive pressure or negative pressure. You can choose a positive pressure air tightness detector or a negative pressure air tightness detector according to the structural characteristics of the product; of course Now there are also positive and negative pressure integrated air tightness detectors, which can test the air tightness and waterproof performance of products after negative pressure first, then positive pressure, first positive pressure and then negative pressure. Positive pressure is generally used to test the air tightness of products. It is the detection method used for the air tightness test of products that are fully sealed and without any holes. Negative pressure is generally used for products with inflatable holes. In the air tightness test, the negative pressure is generated by the vacuuming device in the air tightness detector to generate negative pressure to test the product tightness, which means that if the product is not well sealed, there will be gas from If the leak hole is sucked in, the internal pressure will change, and such a product is unqualified.