抵抗線温度計の周波数補償のための自動検定システムの開発

抄録

The thermo-anemometer comprised of the cold-wire thermometer and the hot-wire anemometer is used for the simultaneous measurement of the temperature and the velocity fields. The cold-wire thermometer involves the frequency characteristics due to the heat capacities of the fine sensor and its prongs. In this study, the frequency compensator for the cold-wire thermometer was constructed by adapting the programmable logic device of FPGA. The numerical experiments indicated that the frequency compensator mounted on the FPGA realized the sufficient precision at a higher sampling frequency. In addition, the automatic evaluation system was developed with the monitoring function of the ambient environment.