Abstract
The temperature-change sensor by thermoelectric module jointed directly p type element and n type element was developed. β-FeSi2 thermoelectric semiconductor made by spark plasma sintering method was used for the prototype sensor. Evaluation of this thermoelectric temperature-change sensor was carried out by measuring electromotive force on dropping into the isothermal water bath. It is confirmed that there is a correlation between temperature difference and electromotive force of the sensor, about 5mV of electromotive force was generated by 30 K of temperature difference. Additionally, dependence of electromotive force on size and thermophysical properties of thermoelectric elements was evaluated by FEM analysis.
