In industrial production.Airtightness TesterWidely used, it isA test equipment used to detect and measure the sealing and waterproof performance of various products.In order to ensure that there is no leakage of water or air defects in the tested parts, and to guarantee the quality and life of the products, it can be said that air tightness testing is indispensable from the cell phone we use everyday to the car we ride.
Ⅰ.Airtightness Testercategorization
市面上有许多不同类型的Air tightness tester，每个都有自己的优点和缺点，Airtightness Tester可以根据不同的分类标准进行分类：
- 根据检测原理的不同可以分为：正压式检测仪,负压式检测仪,定量式检测仪,流量式检测仪,差压式检测仪,正负压检测仪,Burst Testeretc.
- 根据检测对象的不同可以分为：手机气密仪、线束气密仪、压铸件气密仪、锂电池气密仪等。
- 根据自动化程度的不同可以分为：手动气密仪、半自动气密性检测仪、全自动气密测仪。
- 根据应用环境的不同可以分为：新能源气密仪、家电气密仪、汽车气密仪、电子气密仪、医疗器械气密仪等。
- 根据产品功能和性能的不同可以分为：便携式气密仪、台式气密仪、高精度气密仪等。
常见的Airtightness Tester具体可以分为以下三大方法:
Ⅱ.Bubble method test
采用在被检测产品外涂抹或喷淋检漏流体,观察流体是否进入被检测物内。气泡法的代表仪器有水密性检测仪、防水实验箱等，也就是平常所说的水检。
Pros:Simple and easy to use, low cost.
Drawbacks:Can only detect the large hole vulnerability, can not detect the small hole vulnerability, is not applicable to the detection of high-pressure containers, the product test is also required after the completion of the drying and so on, the steps are cumbersome and time-consuming and labor-intensive, the method is applicable to the detection of large-scale equipment and components, there are limitations.
III.Pressure drop method test
采用给被检测产品加压和减压的方法来检测气密性，观察压力是否有下降。压降法的代表仪器有正压气密性测试仪、容积定量气密性检测仪等，也就是平常所说的气检。
Pros:Simple to operate, can detect small holes, cracks and other small holes, widely used, fast detection speed, and can even do a few seconds to measure a product.
Drawbacks:Can not detect the tiny leaks, can not accurately find the leakage point of the inspected product, the use of large pressure needs to be equipped with a booster pump.
telescopesAir tightness testing equipmentTests shell castings for air and water leakage.
IV.Mass Spectrometry
这种类型的Air tightness tester对被测产品施加真空，并测量在设定时间内产生的真空衰减。这种方法可以通过测量发生的真空度下降来检测最小的泄漏。质谱法的代表仪器有Helium Leak Detector、氢质谱检漏仪等，也就是平常所说的氦检。
Pros:It can detect tiny holes with high accuracy and can be used to inspect high-pressure, large-volume, closed container products.
Drawbacks:Requires specializedhelium detectorThe cost is higher.
V. Summary
在现代化的工业制造中，Airtightness Tester已经成为不可或缺的工具。Airtightness Tester可以快速准确地检测产品的密封性能，并且可以检测到微小的泄漏。这可以帮助工厂制造商提高产品质量和工艺效率，并减少产品的故障率和维修成本。
如果您想确保您的产品达到最高的质量标准，请根据自身被测产品的材料、形状、尺寸、应用场景以及气密性测试的精度要求、采购预算等因素选择合适的Airtightness TesterThe
