利用PTC热敏电阻热耗散转速仪的研制

Develop Heat Rate Instrument about the Thermal Resistor of PTC

根据PTC电阻-温度特性,研制了热耗散转速仪,并阐述了热耗散转速仪的结构和原理.实验结果表明,该转速仪可以测量流体的流速,当流速增加时,通过PTC电阻的电流按指数规律增加.在流体的测量中有广泛的应用.

Based on PTC Resistance -temperature characteristics, we develop a tachometer on thermal dissipation. In this paper, structure and principle of the tachometer on thermal dissipation are discussed. Experimental result illustrates that the tachometer on thermal dissipation can adjust the liquid velocity. With increasing of the liquid velocity, current in PTC resistance increases exponentially. It has widely application in measuring of liquid.