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开初,我所测试气动元件和组合件外泄漏的方法,是把试件浸入水中,接通气源,观察试件在15秒钟内结合面有无气泡逸出。但这种方法测量精度不高,微量外泄漏可溶于水中,难于收集和观察。现采用真空测试法,能精确测量出水中不冒气泡试件的外泄漏量。真空容器测漏法原理如图1所示。被试件外泄漏于真空容器内,通过负压传感器将容器内的压力变化转化为电压变化,以测定
In the beginning, the way I tested for leaks on pneumatic components and assemblies was to immerse the specimen in water, turn on the air supply, and observe whether there was any bubble escaping from the specimen in 15 seconds. However, this method of measurement accuracy is not high, micro-leakage can be soluble in water, difficult to collect and observe. Is the use of vacuum test method, can accurately measure the water does not bubble test specimen leakage. Vacuum container leak detection method shown in Figure 1. Leakage of the test specimen in a vacuum container, the negative pressure sensor through the container pressure changes into voltage changes to determine