Abstract
It is of great significance for the measurement of low concentration of VOCs that the sample pretreatment preconcentration system. We design a gas sample pre-treatment preconcentration system based on LabVIEW. It’s in this system, of whose PC uses LabVIEW software and of whose following part adopts data acquisition card USB4711A; intelligent temperature control instrument FB400 of RKC and mass flow controller of burkert (MFC8711). The standardized drive mode of OPC and DataSocket of LabVIEW realize the PC real-time communication with lower computer .This system has a good man-machine interface and it is a reliable control system. This system can realize the real-time display and control of parameters such as temperature, flow, and also realize the running condition of all equipments control and alarm function.
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