高低溫試驗箱的日常維護和保養

    高(gao)低(di)(di)(di)溫(wen)、高(gao)低(di)(di)(di)溫(wen)濕(shi)(shi)(shi)熱、恒溫(wen)恒濕(shi)(shi)(shi)試(shi)驗(yan)箱(xiang)的(de)日常維(wei)護(hu)和保(bao)養(yang)設(she)備(bei)品(pin)種繁(fan)多(duo)，但使用最廣泛的(de)設(she)備(bei)為高(gao)低(di)(di)(di)試(shi)驗(yan)箱(xiang)，而現今(jin)比(bi)較流行是(shi)集合了(le)高(gao)溫(wen)、低(di)(di)(di)溫(wen)、濕(shi)(shi)(shi)熱為一(yi)(yi)(yi)體的(de)試(shi)驗(yan)箱(xiang)—高(gao)低(di)(di)(di)溫(wen)濕(shi)(shi)(shi)熱試(shi)驗(yan)箱(xiang)，它的(de)修理(li)難(nan)度較其它設(she)備(bei)大，且(qie)具有代表性。下(xia)面就高(gao)低(di)(di)(di)溫(wen)試(shi)驗(yan)箱(xiang)為例，談(tan)一(yi)(yi)(yi)談(tan)高(gao)低(di)(di)(di)溫(wen)濕(shi)(shi)(shi)熱試(shi)驗(yan)箱(xiang)的(de)構造及一(yi)(yi)(yi)些常見故(gu)障和排除方(fang)法(fa)。

(一)常見高低(di)溫(wen)試驗箱的構造?

    試(shi)驗人員除(chu)正確按操(cao)作規程操(cao)作，還應該對其結(jie)構(gou)有所了(le)解。高低溫(wen)濕(shi)熱(re)(re)(re)(re)試(shi)驗箱由(you)箱體、風循(xun)環系統(tong)、制(zhi)冷系統(tong)、加溫(wen)系統(tong)和控(kong)濕(shi)系統(tong)組成。風循(xun)環系統(tong)一般采(cai)(cai)用(yong)(yong)可調節送風方(fang)(fang)(fang)向的結(jie)構(gou)；加濕(shi)系統(tong)有采(cai)(cai)用(yong)(yong)鍋(guo)爐(lu)加濕(shi)的和表面蒸發二種；降溫(wen)、去濕(shi)系統(tong)采(cai)(cai)用(yong)(yong)空調工況制(zhi)冷結(jie)構(gou)；加熱(re)(re)(re)(re)系統(tong)采(cai)(cai)用(yong)(yong)電熱(re)(re)(re)(re)鰭片加熱(re)(re)(re)(re)和電爐(lu)絲直接(jie)加熱(re)(re)(re)(re)二種 結(jie)構(gou)；溫(wen)濕(shi)度(du)測試(shi)方(fang)(fang)(fang)法(fa)采(cai)(cai)用(yong)(yong)干(gan)濕(shi)球(qiu)測試(shi)方(fang)(fang)(fang)法(fa)，也有用(yong)(yong)濕(shi)度(du)傳感器直接(jie)測量方(fang)(fang)(fang)法(fa)；控(kong)制(zhi)和顯示操(cao)作界面采(cai)(cai)用(yong)(yong)溫(wen)濕(shi)度(du)分開獨(du)立(li)和溫(wen)濕(shi)度(du)組合控(kong)制(zhi)器等方(fang)(fang)(fang)式。 

(二)高低溫(wen)試驗箱的(de)一些常見故障和排除(chu)方法

    1.在高溫(wen)試驗中，如(ru)溫(wen)度(du)變化達(da)不(bu)到(dao)試驗溫(wen)度(du)值時(shi)，可以檢查(cha)(cha)電(dian)器系統(tong)，逐一排除故障(zhang)。如(ru)溫(wen)度(du)升得很慢，就要查(cha)(cha)看風循環系統(tong)，看一下(xia)風循環的(de)調節擋板(ban)是否開啟正常，反之(zhi)，就檢查(cha)(cha)風循環的(de)電(dian)機運轉是否正常。如(ru)溫(wen)度(du)過沖厲害(hai)那么就需(xu)要整定PID?的(de)設置參數。如(ru)果溫(wen)度(du)直接上升，過溫(wen)保護，那么，控制器出故? 障(zhang)，須更換(huan)控制儀表。
    2.低(di)溫(wen)(wen)(wen)達不(bu)到(dao)試(shi)驗(yan)(yan)(yan)(yan)的(de)(de)(de)(de)(de)指標，那你(ni)就(jiu)要(yao)觀察(cha)溫(wen)(wen)(wen)度(du)(du)的(de)(de)(de)(de)(de)變化，是(shi)溫(wen)(wen)(wen)度(du)(du)降(jiang)的(de)(de)(de)(de)(de)很慢，還(huan)是(shi)溫(wen)(wen)(wen)度(du)(du)到(dao)一定值后(hou)溫(wen)(wen)(wen)度(du)(du)有(you)回升的(de)(de)(de)(de)(de)趨勢，前(qian)者(zhe)就(jiu)要(yao)檢查一下(xia)，做低(di)溫(wen)(wen)(wen)試(shi)驗(yan)(yan)(yan)(yan)前(qian)是(shi)否將工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)烘干，使工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)保(bao)持干燥后(hou)再將試(shi)驗(yan)(yan)(yan)(yan)樣品(pin)放(fang)(fang)入工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內再做試(shi)驗(yan)(yan)(yan)(yan)，高低(di)溫(wen)(wen)(wen)濕熱試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內的(de)(de)(de)(de)(de)試(shi)驗(yan)(yan)(yan)(yan)樣品(pin)是(shi)否放(fang)(fang)置(zhi)(zhi)的(de)(de)(de)(de)(de)過多，使工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內的(de)(de)(de)(de)(de)風不(bu)能充分循環(huan)，在 排除上述原因后(hou)，就(jiu)要(yao)考慮是(shi)否是(shi)制冷系統(tong)中(zhong)的(de)(de)(de)(de)(de)故障了，這樣就(jiu)要(yao)請廠家的(de)(de)(de)(de)(de)專業人員進行檢修。后(hou)者(zhe)的(de)(de)(de)(de)(de)現象是(shi)設備的(de)(de)(de)(de)(de)使用(yong)環(huan)境不(bu)好(hao)所致，設備放(fang)(fang)置(zhi)(zhi)的(de)(de)(de)(de)(de)環(huan)境溫(wen)(wen)(wen)度(du)(du)，放(fang)(fang)置(zhi)(zhi)的(de)(de)(de)(de)(de)位(wei)置(zhi)(zhi)(箱(xiang)體后(hou)與墻(qiang)的(de)(de)(de)(de)(de)距離)要(yao)滿足要(yao)求(在設備操作(zuo)(zuo)(zuo)使用(yong)說(shuo)明中(zhong)都有(you)規(gui)定)。
    3.高低溫(wen)濕(shi)(shi)(shi)熱(re)試驗箱(xiang)在做(zuo)濕(shi)(shi)(shi)熱(re)試驗中(zhong)，出現(xian)(xian)實(shi)際濕(shi)(shi)(shi)度(du)會達到(dao)100%或(huo)者(zhe)實(shi)際濕(shi)(shi)(shi)度(du)與目標濕(shi)(shi)(shi)度(du)相差很大，數值低得(de)很多，前者(zhe)的(de)(de)(de)現(xian)(xian)象(xiang)：可(ke)(ke)能是(shi)濕(shi)(shi)(shi)球傳感器(qi)上 的(de)(de)(de)紗(sha)(sha)布(bu)(bu)干燥引起，那就要(yao)(yao)(yao)檢(jian)(jian)查(cha)濕(shi)(shi)(shi)球傳感器(qi)的(de)(de)(de)水(shui)(shui)槽中(zhong)是(shi)否(fou)缺水(shui)(shui)，水(shui)(shui)槽中(zhong)的(de)(de)(de)水(shui)(shui)位(wei)是(shi)由一水(shui)(shui)位(wei)控(kong)(kong)制(zhi)器(qi)自(zi)動(dong)控(kong)(kong)制(zhi)的(de)(de)(de)，查(cha)水(shui)(shui)位(wei)控(kong)(kong)制(zhi)器(qi)供水(shui)(shui)系(xi)統(tong)是(shi)否(fou)供水(shui)(shui)正(zheng)常(chang)，水(shui)(shui)位(wei)控(kong)(kong)制(zhi)器(qi)工作是(shi)否(fou)正(zheng)常(chang)。另一種可(ke)(ke)能就是(shi)濕(shi)(shi)(shi)球紗(sha)(sha)布(bu)(bu)因(yin)使用時(shi)間長，或(huo)供水(shui)(shui)水(shui)(shui)質純凈度(du)的(de)(de)(de)原因(yin)，會使紗(sha)(sha)布(bu)(bu)變硬(ying)，使紗(sha)(sha)布(bu)(bu)無(wu)法吸收水(shui)(shui)份而干燥，只要(yao)(yao)(yao)更換或(huo)清洗(xi)紗(sha)(sha)布(bu)(bu)即可(ke)(ke)排除以(yi)上現(xian)(xian)象(xiang)。 后者(zhe)的(de)(de)(de)現(xian)(xian)象(xiang)主(zhu)要(yao)(yao)(yao)是(shi)加(jia)濕(shi)(shi)(shi)系(xi)統(tong)不工作，查(cha)看加(jia)濕(shi)(shi)(shi)系(xi)統(tong)的(de)(de)(de)供水(shui)(shui)系(xi)統(tong)，供水(shui)(shui)系(xi)統(tong)內(nei)是(shi)否(fou)有一定(ding)的(de)(de)(de)水(shui)(shui)量，控(kong)(kong)制(zhi)加(jia)濕(shi)(shi)(shi)鍋爐水(shui)(shui)位(wei)的(de)(de)(de)水(shui)(shui)位(wei)控(kong)(kong)制(zhi)是(shi)否(fou)正(zheng)常(chang)，加(jia)濕(shi)(shi)(shi)鍋爐內(nei)的(de)(de)(de)水(shui)(shui)位(wei)是(shi)否(fou)正(zheng)常(chang)。高低溫(wen)濕(shi)(shi)(shi)熱(re)試驗箱(xiang)如以(yi)上一切都(dou)正(zheng)常(chang)，那就要(yao)(yao)(yao)檢(jian)(jian)查(cha)電器(qi)控(kong)(kong)制(zhi)系(xi)統(tong)，這要(yao)(yao)(yao)請專業維修(xiu)人員進行檢(jian)(jian)查(cha)。

高低(di)溫交變濕熱(re)試驗箱(xiang)的箱(xiang)體(ti)結構

    箱體采用(yong)數控機床加工成型(xing)，造型(xing)美觀大方，并采用(yong)無反作用(yong)把手，操作簡便。
    箱(xiang)體內膽采(cai)用進口高級(ji)不銹鋼(SUS304)鏡面板，箱(xiang)體外膽采(cai)用A3鋼板噴(pen)塑(su)，增加了外觀質感和(he)潔凈度。
    補水箱(xiang)置于控(kong)制箱(xiang)體右下部，并有缺水自動保(bao)護，更便(bian)利操(cao)作(zuo)者補充水源。
    大型(xing)觀測視窗附照明(ming)燈保持箱(xiang)(xiang)內(nei)明(ming)亮，且利用發熱體內(nei)嵌式鋼化玻璃(li)，隨時清晰的觀測箱(xiang)(xiang)內(nei)狀況。
    加濕(shi)系統(tong)管路與控制線路板分(fen)開，可(ke)避免因加濕(shi)管路漏(lou)水(shui)發生(sheng)故障，提高安全性。

    水路系統(tong)管路電路系統(tong)方便(bian)維護和(he)檢修。

    箱體(ti)保溫(wen)采用超細玻璃(li)纖(xian)維保溫(wen)棉，可(ke)避免不(bu)必要(yao)的能量(liang)損失。
    箱體左側配(pei)一直徑50mm的測試孔，可供外接測試電源(yuan)線(xian)或信號線(xian)使用。

    東莞恒(heng)工設備是從事恒(heng)溫恒(heng)濕試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，步入(ru)式(shi)環境(jing)試(shi)驗(yan)(yan)(yan)(yan)室，快速溫變試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，冷熱(re)沖擊(ji)試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，高(gao)低溫低氣壓試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，UV光照氣候試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，電池熱(re)沖擊(ji)試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，高(gao)溫時效爐等設備研發(fa)(fa)和(he)生(sheng)產廠家之一，恒(heng)溫恒(heng)濕試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，恒(heng)溫恒(heng)濕箱(xiang)(xiang)(xiang)(xiang)，高(gao)低溫箱(xiang)(xiang)(xiang)(xiang)，冷熱(re)沖擊(ji)試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)，高(gao)低溫沖擊(ji)試(shi)驗(yan)(yan)(yan)(yan)箱(xiang)(xiang)(xiang)(xiang)具(ju)(ju)有行業領(ling)先(xian)地(di)位，累積豐富行業經(jing)驗(yan)(yan)(yan)(yan)，具(ju)(ju)產品(pin)開發(fa)(fa)能力，獲(huo)多項國家專利(li)，業務聯系：潘先(xian)生(sheng)