Air tightness testing method

The airtightness of electronic products, the airtightness of daily necessities, the airtightness of outdoor products, the airtightness of military supplies, the airtightness of valves and pipelines, the airtightness of automobile devices and accessories, the airtightness of medical equipment, etc. need to be doneAir tightness testingproducts, with the advancement of technology.For example, most of them use compressed air air tightness tester

With the improvement of modern technology, the air tightness testing standards of products have also been greatly improved, and new leak detection methods have emerged.The air-tight leak detector needs to be equipped with a high-precision pressure sensor to improve the detection accuracy. The air-tight leak detector can detect small leaks of the workpiece in a short time.According to the processes of different manufacturers, product designs are very different. International and domestic units can be set according to international standards, national standards or according to process needs. The air-tight leak detector will automatically perform operations such as inflation, balancing, detection, judgment, exhaust, display, alarm, and information transmission according to the set test parameters and standards.This eliminates the influence of human factors in detection and achieves standardization, efficiency and automation of leak detection work.

Air tightness leak detector is also known as leak detector, leak detector, air leak detection equipment, waterproof detector, seal detector, IP grade detector.In the past, the leakage inspection of general workpieces mostly used the water immersion method or the soapy water spraying method, and the tester's visual inspection was used to determine whether there was leakage in the workpiece.The size of the leakage depends on the subjective judgment of the tester, so it is difficult to eliminate the influence of human factors on the test results, and it also determines that it cannot quantitatively measure the leakage rate of the workpiece.In addition, after testing with this method, additional work such as cleaning, drying, and anti-rust treatment must be performed on the workpiece, which brings unnecessary trouble to production.It will cause secondary pollution and extremely low production efficiency.

The working principle of air tightness leak detector and its air tightness detection method: As a common leak detection method, sometimes a pressure sensor can be used to directly measure the pressure changes inside the workpiece being tested, and then calculate the leakage amount of the workpiece.However, when the leakage test environment is complex, the accuracy requirements are high, or the test pressure is high and the leakage is small, this method will have high requirements on the sensor. Shenzhen Hiraysi's air tightness detector uses a high-precision pressure sensor imported from the United States, which requires a testing tool to be made according to the characteristics of the product.The gas source provides a stable detection gas source according to the detection requirements, and then pressurizes the workpiece through the equipment. When the internal pressure of the workpiece reaches the detection pressure, the gas enters the detection stage after a period of stability.When the workpiece to be tested does not leak, the detection pressure remains basically unchanged. When the workpiece to be tested leaks, the gas pressure in the workpiece gradually decreases as the gas leaks from the workpiece to be tested. The pressure sensor outputs the corresponding pressure change in real time, and then according to the preset parameters, the system automatically determines whether it is leaking, and the IP waterproof level, leakage amount, and sealing effect of the product can be obtained. The detection process is completely automated, eliminating the influence of human factors, improving production efficiency and accuracy, and will not cause secondary pollution.