萬向雙金屬式溫度計是(shi)利(li)用(yong)(yong)兩種(zhong)(zhong)(zhong)不同(tong)金(jin)屬(shu)在溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)改變時膨脹程(cheng)度(du)(du)(du)(du)(du)(du)(du)不同(tong)的(de)(de)原理工(gong)作的(de)(de)。工(gong)業用(yong)(yong)雙金(jin)屬(shu)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)計主(zhu)要的(de)(de)元件(jian)是(shi)一個用(yong)(yong)兩種(zhong)(zhong)(zhong)或多種(zhong)(zhong)(zhong)金(jin)屬(shu)片(pian)(pian)疊壓在一起組成的(de)(de)多層金(jin)屬(shu)片(pian)(pian)。為提高測溫(wen)(wen)靈敏度(du)(du)(du)(du)(du)(du)(du)，通常將金(jin)屬(shu)片(pian)(pian)制成螺(luo)旋卷形(xing)狀。當多層金(jin)屬(shu)片(pian)(pian)的(de)(de)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)改變時，各層金(jin)屬(shu)膨脹或收(shou)縮量(liang)(liang)不等，使(shi)得螺(luo)旋卷卷起或松開。由于螺(luo)旋卷的(de)(de)一端固定(ding)而另(ling)一端和一可(ke)以自(zi)由轉動的(de)(de)指針相連，因(yin)此，當雙金(jin)屬(shu)片(pian)(pian)感受到溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)變化時，指針即可(ke)在一圓形(xing)分度(du)(du)(du)(du)(du)(du)(du)標尺(chi)上指示(shi)出溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)來。這種(zhong)(zhong)(zhong)儀(yi)表的(de)(de)測溫(wen)(wen)范圍是(shi)200~650℃，允許誤差均為標尺(chi)量(liang)(liang)程(cheng)的(de)(de)1%左右。這種(zhong)(zhong)(zhong)溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)計和棒狀的(de)(de)玻璃液體溫(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)計的(de)(de)用(yong)(yong)途相似，但可(ke)使(shi)用(yong)(yong)在機械強度(du)(du)(du)(du)(du)(du)(du)要求更高的(de)(de)條件(jian)下(xia)。

萬向雙金屬式溫度計是一種(zhong)適合測(ce)(ce)量中，低溫的(de)現(xian)(xian)場(chang)檢測(ce)(ce)儀表，可(ke)用(yong)來直接(jie)測(ce)(ce)量液(ye)化、氣(qi)體的(de)溫度(du)(du)(du)(du)。雙金屬溫度(du)(du)(du)(du)計(ji)與國(guo)內同類產(chan)品的(de)比較(jiao)：儀表精度(du)(du)(du)(du)等(deng)級(ji)達到(dao)1.0級(ji)，儀表上殼采(cai)用(yong)防(fang)腐(fu)材料，其耐溫性(xing)可(ke)以(yi)高(gao)達200℃，低為(wei)-40℃。法蘭式(shi)(shi)結構(gou)，雙層密封膠圈，故防(fang)腐(fu)，防(fang)水性(xing)能好。保護(hu)管(guan)焊(han)接(jie)采(cai)用(yong)全自動(dong)氬氣(qi)保護(hu)管(guan)、焊(han)縫牢固、晶間(jian)腐(fu)蝕小。標度(du)(du)(du)(du)盤(pan)是鋁氧化印(yin)刷盤(pan)，表面清晰式(shi)(shi)樣(yang)美觀。指針為(wei)內可(ke)調(diao)式(shi)(shi)。雙金屬溫度(du)(du)(du)(du)計(ji)有軸向(xiang)(xiang)型(xing),徑向(xiang)(xiang)型(xing),萬向(xiang)(xiang)型(xing)等(deng)表頭(tou)型(xing)號選擇.雙金屬溫度(du)(du)(du)(du)計(ji)探桿長度(du)(du)(du)(du)可(ke)以(yi)根據(ju)客戶(hu)需要(yao)來定(ding)制。現(xian)(xian)場(chang)顯(xian)示溫度(du)(du)(du)(du)，直觀方便安全可(ke)靠，使(shi)用(yong)壽命(ming)長；抽芯式(shi)(shi)溫度(du)(du)(du)(du)計(ji)可(ke)不(bu)停機(ji)短時間(jian)維(wei)護(hu)或更換機(ji)芯。軸向(xiang)(xiang)型(xing)、徑向(xiang)(xiang)型(xing)、135°;型(xing)、萬向(xiang)(xiang)型(xing)等(deng)品種(zhong)齊全，適應于(yu)各種(zhong)現(xian)(xian)場(chang)安裝的(de)需要(yao)。

技術(shu)參數

執行標(biao)準 JB/T8803-1998 GB3836-83

標度盤(pan)公稱直徑：60，100，150

精度等(deng)級(ji)：(1.0)，1.5

熱響應時間：≤40S

防護等級：IP55

角(jiao)度(du)調(diao)整誤差：角(jiao)度(du)調(diao)整誤差應不(bu)超過其量程(cheng)的1.0%

回差：雙金屬溫度計回差應不(bu)大(da)于基本誤差限的值

重復性：雙金屬溫度計重復性極限范圍應不大于基本(ben)誤(wu)差限值的1/2主要技術參數

· 產品執行標準：JB/T8803-1998 ?GB3836-83

· 標度(du)盤公(gong)稱直徑：60，100，150

· 精(jing)度等級：(1.0)，1.5

· 熱響應(ying)時間：≤40S

· 防護等(deng)級：IP55

· 角度調(diao)整誤(wu)差：角度調(diao)整誤(wu)差應不超過其量(liang)程的1.0%

· 回(hui)差(cha)(cha)：溫度(du)計(ji)回(hui)差(cha)(cha)應不大于基(ji)本誤差(cha)(cha)限的值

· 重(zhong)復性：溫(wen)度計(ji)重(zhong)復性極限范圍應不大于基本(ben)誤差限值的1/2