WSS溫度計是(shi)一種(zhong)適(shi)合(he)測量中、低溫的(de)現場檢(jian)測儀(yi)表(biao)，可(ke)(ke)以直接測量各種(zhong)生(sheng)產過程中的(de)-80℃-+500℃范圍內(nei)液(ye)體蒸(zheng)汽(qi)和(he)氣體介質溫度。該溫度計從設計原理及結構上具(ju)有防水(shui)、防腐蝕、耐震動(dong)、直觀、易讀數、無汞害(hai)、堅固(gu)耐用(yong)等特點，雙金屬溫度計能在工(gong)(gong)作溫度超(chao)過給(gei)定(ding)值時，自動(dong)發(fa)出控制(zhi)信(xin)號切斷電(dian)源(yuan)或報警。可(ke)(ke)取(qu)代其(qi)它(ta)形工(gong)(gong)的(de)測溫儀(yi)表(biao)，廣泛應用(yong)于石油、化工(gong)(gong)、機械、船舶、發(fa)電(dian)、紡(fang)織、印(yin)染等工(gong)(gong)業和(he)科研部(bu)門。

　　WSS溫度計(ji)應(ying)用和(he)結構（雙金(jin)屬溫度計(ji)特(te)點）:

　　無汞害，易讀數，堅固(gu)耐震。

　　保護管材為(wei)1Gr18Ni9Ti不銹鋼和鉬二鈦，承壓(ya)、防腐能力強。

　　抽芯式溫度(du)計可不停(ting)機短時間(jian)維護或更換機芯。

　　軸(zhou)(zhou)(zhou)向型(xing)、徑向型(xing)、135o型(xing)、萬向型(xing)等(deng)品(pin)種齊全(quan)，雙(shuang)金屬(shu)(shu)(shu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)適應于(yu)(yu)各種現場安(an)裝的(de)需要。 WSS系(xi)列溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)特征與(yu)(yu)工作原(yuan)理: WSS系(xi)列溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)是用繞成螺紋(wen)旋形的(de)熱(re)雙(shuang)金屬(shu)(shu)(shu)片(pian)作感溫(wen)(wen)(wen)(wen)(wen)元件(jian)(jian)(jian)，并將(jiang)它裝在(zai)(zai)保(bao)護套(tao)內，一端(duan)固定(ding)（固定(ding)端(duan)），另(ling)一端(duan)（自(zi)由(you)(you)端(duan)）連接(jie)在(zai)(zai)一根細軸(zhou)(zhou)(zhou)上(shang)，軸(zhou)(zhou)(zhou)端(duan)裝有(you)指(zhi)針(zhen)。當(dang)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)發生變化(hua)(hua)時(shi)，感溫(wen)(wen)(wen)(wen)(wen)元件(jian)(jian)(jian)的(de)自(zi)由(you)(you)端(duan)隨即(ji)轉(zhuan)動(dong)，從(cong)(cong)而細軸(zhou)(zhou)(zhou)帶(dai)(dai)動(dong)指(zhi)針(zhen)產生角(jiao)(jiao)(jiao)位移，在(zai)(zai)標度(du)(du)(du)盤上(shang)指(zhi)示(shi)(shi)出(chu)(chu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)變化(hua)(hua)；直(zhi)型(xing)表則(ze)通過轉(zhuan)向傳動(dong)機構(gou)(gou)帶(dai)(dai)動(dong)指(zhi)針(zhen)。由(you)(you)于(yu)(yu)感溫(wen)(wen)(wen)(wen)(wen)元件(jian)(jian)(jian)與(yu)(yu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)變化(hua)(hua)呈(cheng)線性(xing)關系(xi)，所以(yi)(yi)雙(shuang)金屬(shu)(shu)(shu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)指(zhi)針(zhen)所指(zhi)示(shi)(shi)的(de)位置即(ji)是被測溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)值。表殼材(cai)料有(you)鋼板、鑄合金、不銹鋼板；檢測元件(jian)(jian)(jian)還具有(you)抽芯(xin)式結構(gou)(gou)；可調(diao)(diao)角(jiao)(jiao)(jiao)型(xing)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)的(de)表頭(tou)部(bu)分借(jie)助于(yu)(yu)波(bo)紋(wen)管，轉(zhuan)角(jiao)(jiao)(jiao)機構(gou)(gou)等(deng)零(ling)件(jian)(jian)(jian)，可以(yi)(yi)由(you)(you)角(jiao)(jiao)(jiao)型(xing)到直(zhi)型(xing)或(huo)從(cong)(cong)直(zhi)型(xing)到角(jiao)(jiao)(jiao)型(xing)任(ren)意角(jiao)(jiao)(jiao)度(du)(du)(du)轉(zhuan)變。電(dian)(dian)接(jie)點雙(shuang)金屬(shu)(shu)(shu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)則(ze)在(zai)(zai)結構(gou)(gou)上(shang)增添(tian)了電(dian)(dian)接(jie)觸(chu)組(zu)、調(diao)(diao)節裝置和出(chu)(chu)線盒等(deng)部(bu)件(jian)(jian)(jian)。在(zai)(zai)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)變化(hua)(hua)時(shi)，當(dang)與(yu)(yu)預(yu)先設定(ding)的(de)控(kong)溫(wen)(wen)(wen)(wen)(wen)定(ding)觸(chu)點（上(shang)限與(yu)(yu)下限）相接(jie)觸(chu)或(huo)斷開的(de)瞬間，使控(kong)制線路中的(de)繼電(dian)(dian)器(qi)或(huo)接(jie)觸(chu)器(qi)動(dong)作，雙(shuang)金屬(shu)(shu)(shu)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)計(ji)從(cong)(cong)而實(shi)現自(zi)動(dong)控(kong)溫(wen)(wen)(wen)(wen)(wen)或(huo)報警的(de)功能。

　　WSS溫(wen)(wen)(wen)度(du)(du)計(ji)是(shi)利(li)用(yong)兩種不同金(jin)(jin)(jin)屬(shu)(shu)在(zai)溫(wen)(wen)(wen)度(du)(du)改變(bian)時膨脹(zhang)程(cheng)度(du)(du)不同的(de)(de)原理工(gong)作的(de)(de)。工(gong)業用(yong)WSS系列溫(wen)(wen)(wen)度(du)(du)計(ji)主要的(de)(de)元件是(shi)一(yi)(yi)個用(yong)兩種或多(duo)(duo)種金(jin)(jin)(jin)屬(shu)(shu)片(pian)(pian)疊壓在(zai)一(yi)(yi)起(qi)組成(cheng)的(de)(de)多(duo)(duo)層(ceng)金(jin)(jin)(jin)屬(shu)(shu)片(pian)(pian)。為提高測溫(wen)(wen)(wen)靈敏度(du)(du)，通常(chang)將金(jin)(jin)(jin)屬(shu)(shu)片(pian)(pian)制成(cheng)螺(luo)(luo)旋卷(juan)(juan)形狀(zhuang)。當(dang)多(duo)(duo)層(ceng)金(jin)(jin)(jin)屬(shu)(shu)片(pian)(pian)的(de)(de)溫(wen)(wen)(wen)度(du)(du)改變(bian)時，各層(ceng)金(jin)(jin)(jin)屬(shu)(shu)膨脹(zhang)或收縮量不等，使得螺(luo)(luo)旋卷(juan)(juan)卷(juan)(juan)起(qi)或松開。由于螺(luo)(luo)旋卷(juan)(juan)的(de)(de)一(yi)(yi)端(duan)固定而另一(yi)(yi)端(duan)和(he)一(yi)(yi)可以自由轉動的(de)(de)指針相連，因此(ci)，當(dang)雙金(jin)(jin)(jin)屬(shu)(shu)片(pian)(pian)感(gan)受到(dao)溫(wen)(wen)(wen)度(du)(du)變(bian)化時，指針即可在(zai)一(yi)(yi)圓形分度(du)(du)標尺上指示出溫(wen)(wen)(wen)度(du)(du)來。這種雙金(jin)(jin)(jin)屬(shu)(shu)溫(wen)(wen)(wen)度(du)(du)計(ji)儀表的(de)(de)測溫(wen)(wen)(wen)范(fan)圍是(shi)200~650℃，允許誤差均為標尺兩程(cheng)的(de)(de)1%左右。這種溫(wen)(wen)(wen)度(du)(du)計(ji)和(he)棒狀(zhuang)的(de)(de)玻璃液(ye)體溫(wen)(wen)(wen)度(du)(du)計(ji)的(de)(de)用(yong)途相似，但可使用(yong)在(zai)機械強度(du)(du)要求更高的(de)(de)條件下。