天康鎧裝熱電偶應用

一、概述

溫度測量中應用泛的溫(wen)(wen)(wen)度(du)(du)(du)器件，他的主要特點(dian)就是(shi)測吻范圍寬，性(xing)能(neng)比較穩定，同(tong)時結構簡(jian)單(dan)，動態響應(ying)好，更能(neng)夠(gou)遠(yuan)傳4-20mA電(dian)(dian)(dian)信號，便(bian)于自動控(kong)(kong)制和集中(zhong)控(kong)(kong)制。熱電(dian)(dian)(dian)偶的測溫(wen)(wen)(wen)原理是(shi)基于熱電(dian)(dian)(dian)效(xiao)應(ying)。將(jiang)(jiang)兩(liang)(liang)種(zhong)(zhong)不(bu)(bu)(bu)(bu)同(tong)的導體(ti)(ti)或(huo)半導體(ti)(ti)連接成閉(bi)合回路，當兩(liang)(liang)個接點(dian)處的溫(wen)(wen)(wen)度(du)(du)(du)不(bu)(bu)(bu)(bu)同(tong)時，回路中(zhong)將(jiang)(jiang)產(chan)(chan)(chan)生熱電(dian)(dian)(dian)勢(shi)(shi)，這(zhe)種(zhong)(zhong)現象稱為(wei)熱電(dian)(dian)(dian)效(xiao)應(ying)，又(you)稱為(wei)塞貝(bei)克效(xiao)應(ying)。閉(bi)合回路中(zhong)產(chan)(chan)(chan)生的熱電(dian)(dian)(dian)勢(shi)(shi)有(you)兩(liang)(liang)種(zhong)(zhong)電(dian)(dian)(dian)勢(shi)(shi)組成；溫(wen)(wen)(wen)差電(dian)(dian)(dian)勢(shi)(shi)和接觸(chu)(chu)電(dian)(dian)(dian)勢(shi)(shi)。溫(wen)(wen)(wen)差電(dian)(dian)(dian)勢(shi)(shi)是(shi)指同(tong)一導體(ti)(ti)的兩(liang)(liang)端因溫(wen)(wen)(wen)度(du)(du)(du)不(bu)(bu)(bu)(bu)同(tong)而(er)產(chan)(chan)(chan)生的電(dian)(dian)(dian)勢(shi)(shi)，不(bu)(bu)(bu)(bu)同(tong)的導體(ti)(ti)具有(you)不(bu)(bu)(bu)(bu)同(tong)的電(dian)(dian)(dian)子密度(du)(du)(du)，所以(yi)他們產(chan)(chan)(chan)生的電(dian)(dian)(dian)勢(shi)(shi)也(ye)不(bu)(bu)(bu)(bu)相(xiang)(xiang)同(tong)，而(er)接觸(chu)(chu)電(dian)(dian)(dian)勢(shi)(shi)顧名思義就是(shi)指兩(liang)(liang)種(zhong)(zhong)不(bu)(bu)(bu)(bu)同(tong)的導體(ti)(ti)相(xiang)(xiang)接觸(chu)(chu)時，因為(wei)他們的電(dian)(dian)(dian)子密度(du)(du)(du)不(bu)(bu)(bu)(bu)同(tong)所以(yi)產(chan)(chan)(chan)生一定的電(dian)(dian)(dian)子擴(kuo)散，當他們達到一定的平(ping)衡后所形成的電(dian)(dian)(dian)勢(shi)(shi)，接觸(chu)(chu)電(dian)(dian)(dian)勢(shi)(shi)的大(da)小(xiao)取決于兩(liang)(liang)種(zhong)(zhong)不(bu)(bu)(bu)(bu)同(tong)導體(ti)(ti)的材料(liao)性(xing)質以(yi)及(ji)他們接觸(chu)(chu)點(dian)的溫(wen)(wen)(wen)度(du)(du)(du)。

具有(you)能彎曲、耐(nai)高壓、熱響應時間快(kuai)和堅固耐(nai)用等優點，鎧(kai)裝熱電(dian)(dian)偶(ou)(ou)與裝配式(shi)熱電(dian)(dian)偶(ou)(ou)一樣(yang)，作(zuo)為(wei)測(ce)(ce)量溫(wen)度(du)的(de)(de)(de)傳感器，通常鎧(kai)裝熱電(dian)(dian)偶(ou)(ou)和顯示儀表、記(ji)錄(lu)儀和電(dian)(dian)子調節器 配套使用，同時，鎧(kai)裝熱電(dian)(dian)偶(ou)(ou)亦可(ke)以(yi)(yi)作(zuo)為(wei)裝配式(shi)熱電(dian)(dian)偶(ou)(ou)的(de)(de)(de)感溫(wen)元件。鎧(kai)裝熱電(dian)(dian)偶(ou)(ou)可(ke)以(yi)(yi)直接測(ce)(ce)量各種生(sheng)產過程中從0℃～1100℃范圍內的(de)(de)(de)液體、蒸汽(qi)和氣體介(jie)質以(yi)(yi)及固體表面的(de)(de)(de)溫(wen)度(du)。通過對鎧(kai)裝熱電(dian)(dian)偶(ou)(ou)各項參數及特征(zheng)的(de)(de)(de)介(jie)紹，大家應該(gai)對此有(you)了(le)更(geng)深層的(de)(de)(de)了(le)解。熱電(dian)(dian)偶(ou)(ou)是需(xu)要根據實際情(qing)況和要求來(lai)選(xuan)取的(de)(de)(de)，并非通用的(de)(de)(de)，選(xuan)擇適宜(yi)的(de)(de)(de)產品才(cai)能給(gei)生(sheng)產帶來(lai)有(you)益(yi)的(de)(de)(de) 效果(guo)，否則只會徒增(zeng)煩惱(nao)，給(gei)質量帶來(lai)不必要的(de)(de)(de)困擾。

天康鎧裝熱電偶應用

鎧裝熱電偶一般可(ke)以測量0～1300℃范圍內的氣體、液體和(he)蒸汽及固體表(biao)面或(huo)內部溫度，可(ke)以配(pei)套數(shu)(shu)字儀表(biao)、記錄調節儀表(biao)、PLC、數(shu)(shu)據采集(ji)器(qi)或(huo)計算機使用，作(zuo)為新一代(dai)的溫度傳 感器(qi)，它可(ke)廣泛(fan)用于冶金、石油、化工(gong)、電力(li)、輕工(gong)、紡織、食品、國防及科研等各部門。