A Study of Transient Temperature Measuring System Based on LabVIEW for Droplets

During the material accumulation process derived from the deposit of molten particles after impacting, flattening, cooling and solidification, the transient temperature variation directly affects splatting behaviors and forming quality. The transient temperature history of splatting process has received considerable attention in this field. LabVIEW by National Instruments is a user friendly and powerful graphical development environment for signal acquisition, measurement analysis, and data presentation. In this paper, a temperature acquisition and measuring system based on a fast-response thermocouple is designed under LabVIEW software platform. In addition, a digital method is used to compensate for the cold junction temperature and calibrate the nonlinearity between the output signal and the temperature obtained by the thermocouple. The measurement of Sn-Pb droplet splatting transient temperature indicates that the system is of low cost, high accuracy, simple operation, visual interface, etc., and the system can also be used widely for other transient high temperature measurement.