热敏电阻温度SENSOR种类

Thermistor Temperature Sensor Types

General market roughly thermocouple, platinum resistance and thermal resistance of three categories
Thermistor: precision level is low, as temperature control and temperature protection device, shall not apply to the above 100 ℃ stability and degree of difference
PTC/NTC (negative temperature coefficient of positive temperature coefficient/CTR, critical temperature coefficient thermistor switch characteristics of negative temperature type
Thermocouple (T/C) : generally use baidu to more than one thousand degrees, is suitable for the measurement of high temperature, the price is cheap
USES two kind of homogeneous forms a closed loop of the metal conductor, when the temperature differences between the junction, creates an electromotive force within the loop.Use mat baker effect ends in both metal and

一般市面大致有热电偶、白金电阻与热敏电阻三种类别热敏电阻:精密等级较低,做为温度控制或温度保护装置 ,不适用100℃以上安定度差 PTC 正温度系数 / NTC负温度系数 / CTR临界温度系数 ,具有开关特性的负温度型热敏电阻热电偶(T/C):一般使用数百度到一千多度之间,适合中高温的测量,价格较低廉利用两种均质之金属导体形成封闭回路,当接合点之温度差异,使回路内产生电动势。利用席贝克效应以两种金属与两端接合点所形成之测定温度感应装置称为热电偶。
      白金电阻(RTD): 正温度系数,高精度及安定性,PT100常被用在-250℃~+640℃之间利用金属因温度变化而产生其电阻值改变的特性来侦测温度值,使用的材质有白金,铜,镍等,可分为Pt100/jPt100/Pt200/Pt500等,其中以Pt100使用最广。