Helium leak-test

As a seal test,sensitivity of helium leak test is higher than other test methods as gas seal and NH_3 leak test.

氦泄漏试验作为一种致密性试验,它的检漏灵敏度远远超过了气密性试验和氨渗漏等试验方法。

This article introduces the equipment used for helium mass spectrometer leak test for the welds of tube and tube-sheet when using hood technique,the connection of the system,operational flow of the test and the calculating method of the leakage rate.

管子-管板焊缝采用护罩技术进行氦质谱泄漏试验所需的设备、系统的连接、试验的操作流程和泄漏率的计算方法。