日本免费一区二区三区最,亚洲五月丁香综合久久精品,大屁股熟女精品视频一区二区,亚洲人成无码网站久久91热国产,99热这里热这里只有精品,日韩精品一区二区五月婷,色拍自拍亚洲综合图区,久久无码一二三四

工(gong)作原理

鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)的工(gong)作原理(li)是由兩(liang)種不同成(cheng)份的導(dao)體兩(liang)端(duan)(duan)(duan)(duan)經(jing)焊接，形成(cheng)回路，直接測(ce)溫端(duan)(duan)(duan)(duan)叫(jiao)測(ce)量(liang)端(duan)(duan)(duan)(duan)，接線(xian)端(duan)(duan)(duan)(duan)叫(jiao)參比端(duan)(duan)(duan)(duan)。當測(ce)量(liang)端(duan)(duan)(duan)(duan)和參比端(duan)(duan)(duan)(duan)存在溫差(cha)時(shi)，就會在回路中產(chan)(chan)生(sheng)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)流，接上顯示儀(yi)表，儀(yi)表上就會指示出熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)所產(chan)(chan)生(sheng)的熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)的對應溫度值。鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)的熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)將隨著測(ce)量(liang)端(duan)(duan)(duan)(duan)的溫度升高(gao)而(er)增長(chang)，熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)動勢(shi)的大小只和鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)導(dao)體材質(zhi)以及兩(liang)端(duan)(duan)(duan)(duan)溫差(cha)有關(guan)，和熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)極的長(chang)度，直徑無關(guan)。鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)的結(jie)構是由導(dao)體，絕(jue)緣(yuan)氧化鎂和1Cr18Ni9Ti不銹鋼保護管(guan)經(jing)多次拉制而(er)成(cheng)，鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)產(chan)(chan)品主要由接線(xian)盒，接線(xian)端(duan)(duan)(duan)(duan)子和鎧(kai)裝(zhuang)(zhuang)熱(re)(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)組成(cheng)基本結(jie)構，并配以各種安(an)裝(zhuang)(zhuang)固(gu)定裝(zhuang)(zhuang)置組成(cheng)。

主要技術指標

測溫范圍和(he)準確度

注：1）t為被測溫度的(de)******值。

鎧裝(zhuang)熱電(dian)偶熱響應時間

在溫度出現階躍變化時，熱電偶的輸出變化至相當于該階躍變化的50%，所需要的時間稱為熱響應時間，用T_0.5表示。

鎧裝(zhuang)熱電偶熱響應時間不大于(yu)下表的規(gui)定：

絕(jue)緣電阻(zu)

當周圍(wei)空氣(qi)溫度為20±15℃，相對濕(shi)度不大(da)于(yu)80﹪時，絕(jue)(jue)緣(yuan)(yuan)型鎧裝熱電(dian)(dian)偶的偶絲與外套(tao)管之間(jian)的絕(jue)(jue)緣(yuan)(yuan)電(dian)(dian)阻值應符合下表規定。

型(xing)號表(biao)示