恒溫恒濕(shi)實驗箱(xiang)也稱恒溫恒濕(shi)(shi)試(shi)(shi)(shi)驗機(ji)、恒溫恒濕(shi)(shi)實驗箱、可程式濕(shi)(shi)熱交變試(shi)(shi)(shi)驗箱、恒溫機(ji)或恒溫恒濕(shi)(shi)箱，用于檢(jian)測材(cai)料在(zai)各(ge)種環(huan)境下性(xing)能的(de)設備及試(shi)(shi)(shi)驗各(ge)種材(cai)料耐熱、耐寒、耐干、耐濕(shi)(shi)性(xing)能。適合電子(zi)、電器、手機(ji)、通訊、儀(yi)表、車(che)輛、塑膠制品(pin)、金屬、食(shi)品(pin)、化(hua)學、建(jian)材(cai)、醫療、航(hang)天(tian)等制品(pin)檢(jian)測質量之用。
恒溫恒濕實驗箱檢修方法及常見(jian)故障的排除方法如以下幾點：
一、在高溫試驗(yan)中，如(ru)溫度變化達不到試驗(yan)溫度值時，可以檢(jian)查(cha)電(dian)器系統，逐一排除故(gu)障。如(ru)溫度升得很慢，就要查(cha)看(kan)風循(xun)環(huan)系統，看(kan)一下風循(xun)環(huan)的調節擋板(ban)是(shi)否開啟正常，反之，就檢(jian)查(cha)風循(xun)環(huan)的電(dian)機運(yun)轉(zhuan)是(shi)否正常。如(ru)溫度過沖厲害那(nei)么就需要整定PID的(de)設置參(can)數。如果溫度直(zhi)接(jie)上升，過(guo)溫保護，那么，控(kong)制器出故障，須更換(huan)控(kong)制儀表。
二、低溫(wen)(wen)(wen)達不(bu)(bu)到(dao)試驗(yan)(yan)的(de)(de)(de)指標，那(nei)你就(jiu)要(yao)觀(guan)察(cha)溫(wen)(wen)(wen)度(du)的(de)(de)(de)變化，是溫(wen)(wen)(wen)度(du)降(jiang)的(de)(de)(de)很慢，還是溫(wen)(wen)(wen)度(du)到(dao)一定值(zhi)后(hou)溫(wen)(wen)(wen)度(du)有回升(sheng)的(de)(de)(de)趨勢，前者就(jiu)要(yao)檢查一下，做低溫(wen)(wen)(wen)試驗(yan)(yan)前是否將工(gong)(gong)作(zuo)室烘干，使工(gong)(gong)作(zuo)室保持干燥后(hou)再將試驗(yan)(yan)樣品放入工(gong)(gong)作(zuo)室內(nei)再做試驗(yan)(yan)，工(gong)(gong)作(zuo)室內(nei)的(de)(de)(de)試驗(yan)(yan)樣品是否放置(zhi)的(de)(de)(de)過多，使工(gong)(gong)作(zuo)室內(nei)的(de)(de)(de)風(feng)不(bu)(bu)能充分循環(huan)，在排除上述原因后(hou)，就(jiu)要(yao)考(kao)慮是否是制冷系統中的(de)(de)(de)故障了，這樣就(jiu)要(yao)請廠(chang)家的(de)(de)(de)專業人員進行檢修。后(hou)者的(de)(de)(de)現象(xiang)是設備(bei)的(de)(de)(de)使用(yong)環(huan)境不(bu)(bu)好所致(zhi)，設備(bei)放置(zhi)的(de)(de)(de)環(huan)境溫(wen)(wen)(wen)度(du)，放置(zhi)的(de)(de)(de)位(wei)置(zhi)(箱體(ti)后與(yu)墻(qiang)的距離)要滿足要求(在設備操(cao)作使用說明(ming)中都有規定)。
三、在試驗運行過程中(zhong)突然出(chu)現(xian)(xian)故障時，控制(zhi)儀表上出(chu)現(xian)(xian)對應的故障顯示提(ti)示并有(you)聲(sheng)訊報警提(ti)示。操作人員可以對照設備(bei)的操作使用中(zhong)的故障排(pai)除一章中(zhong)快速檢查(cha)出(chu)屬于(yu)哪一類(lei)故障，即可請專業人員快速排(pai)除故障，以確保試驗的正(zheng)常進行。其它環境試驗設備(bei)在使用中(zhong)還會(hui)有(you)其它的現(xian)(xian)象，那就(jiu)要具體(ti)現(xian)(xian)象，具體(ti)分析和(he)排(pai)除。環境試驗設備(bei)還要定(ding)期(qi)進行維(wei)(wei)護(hu)保養，制(zhi)冷系統的冷凝器(qi)定(ding)期(qi)清理，對于(yu)活動(dong)部件應按(an)說(shuo)明書加(jia)油潤滑(hua)，電器(qi)控制(zhi)系統定(ding)期(qi)維(wei)(wei)護(hu)檢查(cha)等等，這(zhe)些工(gong)作是不可少的。
四(si)、熱試驗中(zhong)，出(chu)現實際濕度會(hui)達到100%或(huo)者實際濕(shi)度(du)與目標濕(shi)度(du)相差很大，數值低(di)得很多，前者的(de)(de)現(xian)象：可(ke)能是(shi)濕(shi)球(qiu)傳(chuan)感(gan)器(qi)上的(de)(de)紗(sha)布(bu)干燥(zao)引(yin)起，那就要檢查(cha)濕(shi)球(qiu)傳(chuan)感(gan)器(qi)的(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)槽(cao)中是(shi)否(fou)缺水(shui)(shui)(shui)(shui)(shui)(shui)，水(shui)(shui)(shui)(shui)(shui)(shui)槽(cao)中的(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)是(shi)由(you)一水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)控(kong)(kong)制(zhi)(zhi)器(qi)自動控(kong)(kong)制(zhi)(zhi)的(de)(de)，查(cha)水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)控(kong)(kong)制(zhi)(zhi)器(qi)供(gong)水(shui)(shui)(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)(tong)是(shi)否(fou)供(gong)水(shui)(shui)(shui)(shui)(shui)(shui)正(zheng)常，水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)控(kong)(kong)制(zhi)(zhi)器(qi)工作是(shi)否(fou)正(zheng)常。另一種(zhong)可(ke)能就是(shi)濕(shi)球(qiu)紗(sha)布(bu)因使(shi)用時(shi)間(jian)長，或(huo)供(gong)水(shui)(shui)(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)(shui)(shui)質純凈度(du)的(de)(de)原因，會使(shi)紗(sha)布(bu)變硬，使(shi)紗(sha)布(bu)無法吸收水(shui)(shui)(shui)(shui)(shui)(shui)份(fen)而干燥(zao)，只要更換或(huo)清洗紗(sha)布(bu)即(ji)可(ke)排(pai)除(chu)以(yi)(yi)上現(xian)象。后者的(de)(de)現(xian)象主(zhu)要是(shi)加(jia)濕(shi)系(xi)統(tong)(tong)(tong)(tong)不工作，查(cha)看加(jia)濕(shi)系(xi)統(tong)(tong)(tong)(tong)的(de)(de)供(gong)水(shui)(shui)(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)(tong)，供(gong)水(shui)(shui)(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)(tong)(tong)內是(shi)否(fou)有一定的(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)量(liang)，控(kong)(kong)制(zhi)(zhi)加(jia)濕(shi)鍋(guo)爐(lu)(lu)水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)的(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)控(kong)(kong)制(zhi)(zhi)是(shi)否(fou)正(zheng)常，加(jia)濕(shi)鍋(guo)爐(lu)(lu)內的(de)(de)水(shui)(shui)(shui)(shui)(shui)(shui)位(wei)是(shi)否(fou)正(zheng)常。如以(yi)(yi)上一切都正(zheng)常，那就要檢查(cha)電器(qi)控(kong)(kong)制(zhi)(zhi)系(xi)統(tong)(tong)(tong)(tong)，這要請專業人員進行檢修(xiu)。
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