熱敏電阻傳感器主要元件是熱敏電阻，當熱敏材料周圍有熱輻射時，它就會吸收輻射熱，產生溫度升高
，引起材料的阻值發生變化。

 

 

作為測量溫度的熱敏電阻傳感器一般結構較簡單
，價格較低廉。沒有外麵保護層的熱敏電阻隻能應用在幹燥的地方;密封的熱敏電阻不怕濕氣的侵蝕
、keyishiyongzaijiaoeliedehuanjingxia。youyuremindianzuchuanganqidezuzhijiaoda，guqilianjiedaoxiandedianzuhejiechudianzukeyihulve，yinciremindianzuchuanganqikeyizaichangdajiqianmideyuanjuliceliangwenduzhongyingyong
，celiangdianluduocaiyongqiaolu。liyongqiyuanlihaikeyiyongzuoqitacewen
、控溫電路等。

 

 

remindianzuchuanganqikezaiyidingdewendufanweineiduimouxieyuanqijianshidujinxingbuchang。liru，dongquanshiyibiaobiaotouzhongdedongquanyoutongxianraozhiercheng。wendushenggao，dianzuzengda



，yinqiwendudewucha。yinerkeyizaidongquandehuiluzhongjiangfuwenduxishuderemindianzuyumengtongsidianzubinglianhouzaiyubeibuchangyuanqijianchuanlian，congerdixiaoneiyuwendubianhuasuochanshengdewucha。zaijingtiguandianlu、對數放大器中，也常用熱敏電阻組成補償電路。補償由於溫度引起的漂移誤差。

 

guorebaohufenzhijiebaohulijianjiebaohu。duixiaodianliuchanghe，kebaremindianzuchuanganqizhijiechuanrenfuzaizhong

，fangzhiguoresunhuaiyibaohuqijian，duidadianliuchanghe
，keyongyuduijidianqi、jingtiguandianludengdebaohu。bulunnazhongqingkuang，remindianzudouyubeibaohuqijianjinmijiehezaiyiqi，congershiliangzhezhijianchongfenjinxingrejiaohuan，yidanguore，remindianzuzeqibaohuzuoyong。liru
，zaidiandongjidedingziraozuzhongqianrutubianxingremindianzuchuanganqibingyujidianqichuanlian。dangdiandongjiguozaishi

，dingzidianliuzengda，yinqifare。dangwendudayutubiandianshi，dianluzhongdedianliukeyineishifenzhijihaoantubianweijishihaoan，yincijidianqidongzuo，congershixianguorebaohu。

 

 

給NTC熱(re)敏(min)電(dian)阻(zu)傳(chuan)感(gan)器(qi)施(shi)加(jia)一(yi)定(ding)的(de)加(jia)熱(re)電(dian)流(liu)，它(ta)的(de)表(biao)麵(mian)溫(wen)度(du)將(jiang)高(gao)於(yu)周(zhou)圍(wei)的(de)空(kong)氣(qi)溫(wen)度(du)
，此(ci)時(shi)它(ta)的(de)阻(zu)值(zhi)較(jiao)小(xiao)。當(dang)液(ye)而(er)高(gao)於(yu)它(ta)的(de)安(an)裝(zhuang)高(gao)度(du)時(shi)，液(ye)體(ti)將(jiang)帶(dai)走(zou)它(ta)的(de)熱(re)量(liang)

，使(shi)之(zhi)溫(wen)度(du)下(xia)降(jiang)、阻(zu)值(zhi)升(sheng)高(gao)。判(pan)斷(duan)它(ta)的(de)阻(zu)值(zhi)變(bian)化(hua)，就(jiu)可(ke)以(yi)知(zhi)道(dao)液(ye)麵(mian)是(shi)否(fou)低(di)於(yu)設(she)定(ding)值(zhi)。汽(qi)車(che)油(you)箱(xiang)中(zhong)的(de)油(you)位(wei)報(bao)警(jing)傳(chuan)感(gan)器(qi)就(jiu)是(shi)利(li)用(yong)以(yi)上(shang)原(yuan)理(li)製(zhi)作(zuo)的(de)。熱(re)敏(min)電(dian)阻(zu)在(zai)汽(qi)車(che)中(zhong)還(hai)用(yong)於(yu)測(ce)量(liang)油(you)溫(wen)、冷卻水混等。