这是自己做的vb的串口的用户界面软件，主要是做了浓度分析仪的串口通信。-This is their own user interface software for vb serial port, the main concentration analyzer serial communication

串口通信程序，检测颗粒浓度，基于CSerialPort类编写，对于VC串口通信初学者很有帮助-Serial communication program, the detection of particle concentration, written based CSerialPort class for VC serial communication very helpful for beginners serial communication program, to detect parti

1.用于管道天然气置换。 2.用于天然气管道的管网查漏。 3.惰性气体置换后的罐内或管道中的可燃气体浓度确认。 4.检测高浓度的可燃气体浓度泄漏。 5.可探测用氦气做标示气体的地下电话电缆线的破损点 。-1 for the replacement of natural gas pipelines. 2 pipeline network for natural gas pipeline leak. 3 after the replacement of the inert gas i