其工作原理是通(tong)過(guo)溫(wen)(wen)度(du)傳感器對(dui)環境溫(wen)(wen)度(du)自動進行采樣、即時監控(kong)(kong)，當(dang)環境溫(wen)(wen)度(du)高于控(kong)(kong)制(zhi)設定值時控(kong)(kong)制(zhi)電(dian)路(lu)啟動，可以設置控(kong)(kong)制(zhi)回(hui)差。如(ru)溫(wen)(wen)度(du)還(huan)在升，當(dang)升到(dao)設定的超限報警溫(wen)(wen)度(du)點時，啟動超限報警功(gong)能。當(dang)被控(kong)(kong)制(zhi)的溫(wen)(wen)度(du)不(bu)能得到(dao)有效(xiao)的控(kong)(kong)制(zhi)時，為了(le)防(fang)止(zhi)設備(bei)的毀壞還(huan)可以通(tong)過(guo)跳閘的功(gong)能來(lai)停(ting)止(zhi)設備(bei)繼續運行。主要應用于電(dian)力(li)部(bu)門(men)使用的各種高低壓(ya)(ya)開關(guan)柜、干(gan)式變壓(ya)(ya)器、箱式變電(dian)站及其他相關(guan)的溫(wen)(wen)度(du)使用領域。
仔(zi)細看溫(wen)控器上的三個腳，它們都(dou)有用英文字(zi)母和數字(zi)兩種方法來代替，分(fen)別是(shi)：H（6）、L（3）、C（4）。
H（6）接棕色線(xian)，是電(dian)源(yuan)的火線(xian)；
L（3）接(jie)灰色線，是燈的火線；
C(4)接白色線，是壓縮機的火(huo)線。
控(kong)(kong)制(zhi)(zhi)(zhi)方法一(yi)(yi)般分為兩種；一(yi)(yi)種是由被冷卻(que)對象的(de)溫度(du)變化來進行控(kong)(kong)制(zhi)(zhi)(zhi)，多采用蒸氣壓力式溫度(du)控(kong)(kong)制(zhi)(zhi)(zhi)器，另一(yi)(yi)種由被冷卻(que)對象的(de)溫差變化來進行控(kong)(kong)制(zhi)(zhi)(zhi)，多采用電子式溫度(du)控(kong)(kong)制(zhi)(zhi)(zhi)器。
其(qi)采用的模糊控(kong)制(zhi)技術如PID控(kong)制(zhi)，P（Proportional）比例(li)+I（Integral）積分(fen)+D（Differential）微分(fen)控(kong)制(zhi)。
雙金屬(shu)片(pian)(pian)突(tu)跳(tiao)式溫(wen)(wen)控(kong)器是一種(zhong)將(jiang)定溫(wen)(wen)后(hou)的雙金屬(shu)片(pian)(pian)作為熱敏(min)感反應組件(jian)，當(dang)產品(pin)主件(jian)溫(wen)(wen)度(du)升高(gao)時所產生的熱量傳遞到(dao)雙金屬(shu)圓片(pian)(pian)上，達(da)(da)到(dao)動(dong)(dong)作溫(wen)(wen)度(du)設(she)定時迅速動(dong)(dong)作，通(tong)過機構作用是觸點斷開或閉合(he)(he)；當(dang)溫(wen)(wen)度(du)下(xia)降到(dao)復位溫(wen)(wen)度(du)設(she)定時，雙金屬(shu)片(pian)(pian)迅速回復原狀，使觸點閉合(he)(he)或斷開，達(da)(da)到(dao)接通(tong)或斷開電路的目的，從(cong)而控(kong)制電路。
各種突(tu)跳式(shi)溫(wen)控(kong)器(qi)的型(xing)號統稱KSD，常見的如KSD301,KSD302等，該溫(wen)控(kong)器(qi)是雙金屬片(pian)溫(wen)控(kong)器(qi)的新型(xing)產品，主要作(zuo)(zuo)為各種電熱(re)產品具過(guo)熱(re)保(bao)(bao)(bao)護時，通常與(yu)熱(re)熔(rong)斷器(qi)串(chuan)接使用，突(tu)跳式(shi)溫(wen)控(kong)器(qi)作(zuo)(zuo)為一級保(bao)(bao)(bao)護。熱(re)熔(rong)斷器(qi)則在突(tu)跳式(shi)溫(wen)控(kong)器(qi)失婁或失效導(dao)致電熱(re)元件超溫(wen)時，作(zuo)(zuo)為二級保(bao)(bao)(bao)護自，有效地(di)防止(zhi)燒壞(huai)電熱(re)元件以及由此而(er)引起的火災事故。
是(shi)當被控(kong)(kong)(kong)(kong)(kong)制對象的溫(wen)度發(fa)生變化時使溫(wen)控(kong)(kong)(kong)(kong)(kong)器感溫(wen)部內的物(wu)質（一(yi)般(ban)是(shi)液體）產(chan)生相應的熱脹冷縮(suo)的物(wu)理(li)現象（體積變化），與(yu)感溫(wen)部連通(tong)一(yi)起的膜盒(he)產(chan)生膨(peng)脹或(huo)收(shou)縮(suo)。以杠(gang)桿原理(li)，帶(dai)動(dong)開關(guan)通(tong)斷(duan)動(dong)作，達(da)到恒溫(wen)目的液脹式(shi)溫(wen)控(kong)(kong)(kong)(kong)(kong)器具有控(kong)(kong)(kong)(kong)(kong)溫(wen)準確，穩定可靠，開停溫(wen)差小(xiao)，控(kong)(kong)(kong)(kong)(kong)制溫(wen)控(kong)(kong)(kong)(kong)(kong)調節范圍大，過載(zai)電(dian)流大等性能特點(dian)。液漲式(shi)溫(wen)控(kong)(kong)(kong)(kong)(kong)器主要用于(yu)家電(dian)行業(ye)，電(dian)熱設(she)備，制冷行業(ye)等溫(wen)度控(kong)(kong)(kong)(kong)(kong)制場(chang)合(he)用。
該溫(wen)(wen)控(kong)器(qi)通過(guo)密(mi)閉的(de)內充(chong)感溫(wen)(wen)工質的(de)溫(wen)(wen)包和毛(mao)細管，把被控(kong)溫(wen)(wen)度(du)(du)的(de)變(bian)化(hua)轉變(bian)為空(kong)間壓(ya)力或(huo)容積(ji)的(de)變(bian)化(hua)，達到(dao)溫(wen)(wen)度(du)(du)設定值時，通過(guo)彈(dan)性元件和快(kuai)速瞬動機構，自(zi)動關閉觸頭，以達到(dao)自(zi)動控(kong)制溫(wen)(wen)度(du)(du)的(de)目的(de)。它由感溫(wen)(wen)部、溫(wen)(wen)度(du)(du)設定主體部、執行開(kai)閉的(de)微動開(kai)關或(huo)自(zi)動風門等(deng)三部分組成(cheng)。壓(ya)力式溫(wen)(wen)控(kong)器(qi)適(shi)用于制冷(leng)器(qi)具（如電冰(bing)箱(xiang)冰(bing)柜(ju)等(deng)）和制熱器(qi)等(deng)場合。
電(dian)(dian)(dian)(dian)子(zi)式(shi)溫(wen)(wen)度(du)控(kong)制器（電(dian)(dian)(dian)(dian)阻(zu)式(shi)）是采用電(dian)(dian)(dian)(dian)阻(zu)感(gan)溫(wen)(wen)的方法來測量的，一般(ban)采用白金絲、銅(tong)絲、鎢絲以(yi)及熱(re)敏(min)(min)電(dian)(dian)(dian)(dian)阻(zu)等作為(wei)測溫(wen)(wen)電(dian)(dian)(dian)(dian)阻(zu)，這些電(dian)(dian)(dian)(dian)阻(zu)各有其優確點。一般(ban)家用空(kong)調大都使用熱(re)敏(min)(min)電(dian)(dian)(dian)(dian)阻(zu)式(shi)。電(dian)(dian)(dian)(dian)子(zi)式(shi)溫(wen)(wen)度(du)控(kong)制器具有穩定(ding)，體積小(xiao)的優點，在越來越多的領域中得到使用。
數(shu)(shu)字電(dian)(dian)子式(shi)溫(wen)度(du)控(kong)制(zhi)器(qi)(qi)是一種精確的溫(wen)度(du)檢(jian)測(ce)控(kong)制(zhi)器(qi)(qi)，可以對溫(wen)度(du)進(jin)行數(shu)(shu)字量(liang)化控(kong)制(zhi)。溫(wen)控(kong)器(qi)(qi)一般采(cai)用NTC熱(re)(re)敏(min)傳(chuan)(chuan)感(gan)器(qi)(qi)或者(zhe)熱(re)(re)電(dian)(dian)偶(ou)作為(wei)溫(wen)度(du)檢(jian)測(ce)元件，它的原理是：將NTC熱(re)(re)敏(min)傳(chuan)(chuan)感(gan)器(qi)(qi)或者(zhe)熱(re)(re)電(dian)(dian)偶(ou)設計到相應電(dian)(dian)路(lu)中，NTC熱(re)(re)敏(min)傳(chuan)(chuan)感(gan)器(qi)(qi)或者(zhe)熱(re)(re)電(dian)(dian)偶(ou)隨溫(wen)度(du)變(bian)(bian)化而改變(bian)(bian)，就(jiu)會產生相應的電(dian)(dian)壓電(dian)(dian)流改變(bian)(bian)，再通過微控(kong)制(zhi)器(qi)(qi)對改變(bian)(bian)的電(dian)(dian)壓電(dian)(dian)流進(jin)行檢(jian)測(ce)、量(liang)化顯示(shi)出來，并(bing)做相應的控(kong)制(zhi)。數(shu)(shu)字溫(wen)度(du)控(kong)制(zhi)器(qi)(qi)具有精確度(du)高(gao)、靈敏(min)度(du)好(hao)、直觀、操作方便(bian)等特點。
在(zai)歐(ou)洲絕大多情況是(shi)溫(wen)控器是(shi)壁掛爐(lu)必(bi)配(pei)件，兩(liang)者一(yi)配(pei)一(yi)的(de)同時交付用戶的(de)，而且配(pei)備(bei)(bei)的(de)溫(wen)控器大多是(shi)智(zhi)能型(xing)溫(wen)控器。而在(zai)國內，已(yi)安裝(zhuang)在(zai)運行(xing)和正(zheng)在(zai)安裝(zhuang)調試準備(bei)(bei)投入(ru)使用的(de)壁掛爐(lu)近95%的(de)沒有先(xian)行(xing)配(pei)備(bei)(bei)任何(he)形式的(de)簡(jian)易或智(zhi)能型(xing)的(de)溫(wen)控器。而房間(jian)采暖系(xi)統中配(pei)備(bei)(bei)溫(wen)控器尤其(qi)是(shi)智(zhi)能溫(wen)控器，是(shi)節(jie)能采暖綜合體系(xi)中一(yi)個極為突出的(de)最重要的(de)環節(jie)。
方便(bian)：每天自動(dong)定時(shi)提(ti)前(qian)或延(yan)后開關(guan)調節壁掛爐，免去人(ren)工(gong)操作，對上班族家(jia)庭最有必要(yao)；
舒適：每天早午晚夜各時段室溫自動高低調整(zheng)，免去早晨起床和下(xia)班回(hui)家后等待房(fang)間升溫而挨凍(dong)的尷尬；
省(sheng)氣：改落(luo)后粗(cu)放的水溫(wen)控(kong)制(zhi)為(wei)先(xian)進準確的室溫(wen)控(kong)制(zhi)，加上分時(shi)段定室溫(wen)按(an)需(xu)運行(xing)，不用敞開的晝(zhou)夜燒氣采暖；
放心：室溫過低時強制啟動壁(bi)掛爐，僅需極少的燃氣，便可安全的進行(xing)居室防凍保護。
溫(wen)控(kong)(kong)(kong)器(qi)(qi)被(bei)廣泛的(de)(de)使用(yong)于各種家(jia)電產(chan)品(pin)當(dang)中(zhong)(zhong)，如(ru)電冰(bing)箱(xiang)、飲水(shui)機(ji)、熱水(shui)器(qi)(qi)、咖啡壺等。溫(wen)控(kong)(kong)(kong)器(qi)(qi)的(de)(de)質(zhi)量(liang)直接影(ying)響到整機(ji)的(de)(de)安(an)全、性(xing)能(neng)、壽命，是(shi)非常關鍵(jian)的(de)(de)一個元件。在溫(wen)控(kong)(kong)(kong)器(qi)(qi)的(de)(de)眾(zhong)多技(ji)術(shu)指標當(dang)中(zhong)(zhong)，壽命是(shi)衡量(liang)溫(wen)控(kong)(kong)(kong)器(qi)(qi)產(chan)品(pin)最重(zhong)要(yao)的(de)(de)技(ji)術(shu)指標之一。家(jia)電標準規(gui)定，溫(wen)控(kong)(kong)(kong)器(qi)(qi)的(de)(de)壽命至(zhi)少為(wei)10000次，部(bu)分家(jia)電，如(ru)電冰(bing)箱(xiang)產(chan)品(pin)當(dang)中(zhong)(zhong)控(kong)(kong)(kong)制電動機(ji)-壓縮機(ji)的(de)(de)溫(wen)控(kong)(kong)(kong)器(qi)(qi)，充液式散(san)熱器(qi)(qi)中(zhong)(zhong)的(de)(de)一些溫(wen)控(kong)(kong)(kong)器(qi)(qi)壽命要(yao)求(qiu)至(zhi)少為(wei)100000次。家(jia)用(yong)溫(wen)控(kong)(kong)(kong)器(qi)(qi)對應的(de)(de)標準GB14536.10-2008/IEC60730-2-9:2004對溫(wen)控(kong)(kong)(kong)器(qi)(qi)的(de)(de)壽命試(shi)驗(yan)做了(le)詳細的(de)(de)規(gui)定。
