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工(gong)(gong)業用(yong)(yong)(yong)(yong)隔爆(bao)(bao)(bao)鉑電(dian)(dian)(dian)阻(zu)是一(yi)種溫度(du)(du)(du)傳感器(qi)。在工(gong)(gong)業自控系(xi)統中(zhong)應用(yong)(yong)(yong)(yong)廣(guang)泛，通(tong)(tong)過溫度(du)(du)(du)傳感器(qi)，可(ke)將 控制(zhi)對(dui)象的(de)溫度(du)(du)(du)參數(shu)變成電(dian)(dian)(dian)信(xin)號,傳遞(di)給顯示、記錄(lu)和調(diao)節(jie)儀表,對(dui)系(xi)統實行檢(jian)測、調(diao)節(jie)和控制(zhi)。在化工(gong)(gong)廠、生產現場常伴有(you)各種易燃、易爆(bao)(bao)(bao)等化學氣(qi)體、 蒸(zheng)氣(qi)，如果使(shi)用(yong)(yong)(yong)(yong)普通(tong)(tong)的(de)鉑電(dian)(dian)(dian)阻(zu)非常 不安(an)全，極(ji)易引(yin)起環(huan)(huan)境氣(qi)體爆(bao)(bao)(bao)炸(zha)(zha)。因(yin)此，在這(zhe)些場合(he)必須使(shi)用(yong)(yong)(yong)(yong)隔爆(bao)(bao)(bao)熱(re)電(dian)(dian)(dian)偶作溫度(du)(du)(du)傳感器(qi)，本廠生 產的(de)隔爆(bao)(bao)(bao)鉑電(dian)(dian)(dian)阻(zu)產品適用(yong)(yong)(yong)(yong)在d II BT4~d II CT6 溫度(du)(du)(du)組別區間內具有(you)爆(bao)(bao)(bao)炸(zha)(zha)性氣(qi)體危(wei)險的(de)場所內. 本廠生產的(de)隔爆(bao)(bao)(bao)熱(re)電(dian)(dian)(dian)偶采(cai)用(yong)(yong)(yong)(yong)引(yin)進元(yuan)件(jian)作感溫元(yuan)件(jian)，其技(ji)術性能符合(he) ZBY301-85工(gong)(gong)業鉑電(dian)(dian)(dian)技(ji)術 條件(jian)和分(fen)度(du)(du)(du)表。同時(shi)產品符合(he)爆(bao)(bao)(bao)炸(zha)(zha)性環(huan)(huan)境用(yong)(yong)(yong)(yong)防爆(bao)(bao)(bao)電(dian)(dian)(dian)氣(qi)設備通(tong)(tong)用(yong)(yong)(yong)(yong)要求 GB3836.1-83 、 GB3836.2-83 標準。

　　◆ 主要技(ji)術指標

量程規格

　　注：“ t ”為感溫元件實測溫度絕(jue)對(dui)值，雙支鉑電(dian)阻只供應 B 級 熱電(dian)阻允(yun)許通過電(dian)流

　　通過(guo)(guo)鉑電阻的測量電流最大不(bu)超過(guo)(guo) 5mA 。

　　防(fang)爆類型和級組

　　防爆(bao)級組： d II BT4 或(huo) d II CT4 ; d II BT6 或(huo) d II CT6

　　外殼防(fang)護等級： IP54 、

　　原(yuan)理結(jie)構

　　隔爆熱(re)電阻和(he)裝配(pei)式(shi)熱(re)電阻的結構、原(yuan)理(li)基本相(xiang)同，所區(qu)別的是，隔爆產品(pin)的接(jie)線(xian)盒(he)(外殼)在設(she)計(ji)上(shang)采用(yong)防爆特殊(shu)的結構，接(jie)線(xian)盒(he)用(yong)高強度鋁(lv)合(he)金壓(ya)鑄而(er)(er)成，并具有(you)足(zu)夠的內部空間、壁厚(hou)和(he)機械強度，橡膠密封圈的熱(re)穩(wen)定(ding)性符合(he)國家防爆標準。所以，當接(jie)線(xian)盒(he)內部的爆炸(zha)性混合(he)氣體發生爆炸(zha)時，其內壓(ya)不會破壞接(jie)線(xian)盒(he)，而(er)(er)由(you)此產生的熱(re)能不能向外擴散—傳爆。

 　　由于(yu)產(chan)品(pin)采用上述防爆(bao)特殊結構，使(shi)產(chan)品(pin)符合使(shi)用在 d II BT4 至 d II CT6 防爆(bao)溫度(du)組(zu)別區(qu)間范(fan)圍內，只要用戶嚴格遵守產(chan)品(pin)使(shi)用規(gui)則(ze)，產(chan)品(pin)就能達到(dao)可靠的防爆(bao)效果。