高低溫試驗箱不達標

一、如何解決高(gao)低溫試驗箱低溫達不到試驗的指(zhi)標？
　　高(gao)低溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)箱低溫(wen)(wen)(wen)(wen)達不(bu)(bu)到指標，降溫(wen)(wen)(wen)(wen)很慢那你就(jiu)要(yao)觀察溫(wen)(wen)(wen)(wen)度(du)的(de)(de)(de)(de)(de)(de)變化，是(shi)溫(wen)(wen)(wen)(wen)度(du)降的(de)(de)(de)(de)(de)(de)很慢，還是(shi)溫(wen)(wen)(wen)(wen)度(du)到一(yi)定值后溫(wen)(wen)(wen)(wen)度(du)有回升的(de)(de)(de)(de)(de)(de)趨勢(shi)，前者就(jiu)要(yao)檢查一(yi)下，做(zuo)低溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)前是(shi)否(fou)將工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)烘干，使(shi)(shi)工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)保(bao)持(chi)干燥后再將試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)樣品放(fang)入工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內再做(zuo)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)，工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內的(de)(de)(de)(de)(de)(de)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)樣品是(shi)否(fou)放(fang)置(zhi)的(de)(de)(de)(de)(de)(de)過(guo)多，使(shi)(shi)工(gong)(gong)作(zuo)(zuo)(zuo)室(shi)內的(de)(de)(de)(de)(de)(de)風不(bu)(bu)能充分循環(huan)，在(zai)排(pai)除上述原(yuan)因后，就(jiu)要(yao)考(kao)慮是(shi)否(fou)是(shi)制冷系(xi)統中(zhong)的(de)(de)(de)(de)(de)(de)故障了，這樣就(jiu)要(yao)請廠(chang)家的(de)(de)(de)(de)(de)(de)專(zhuan)業人員進行(xing)檢修。后者的(de)(de)(de)(de)(de)(de)現象(xiang)是(shi)高(gao)低溫(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)驗(yan)(yan)(yan)(yan)箱設(she)備的(de)(de)(de)(de)(de)(de)使(shi)(shi)用(yong)環(huan)境不(bu)(bu)好所(suo)致，設(she)備放(fang)置(zhi)的(de)(de)(de)(de)(de)(de)環(huan)境溫(wen)(wen)(wen)(wen)度(du)，放(fang)置(zhi)的(de)(de)(de)(de)(de)(de)位置(zhi)(箱體后與墻(qiang)的(de)(de)(de)(de)(de)(de)距離(li))要(yao)滿足要(yao)求(在(zai)設(she)備操作(zuo)(zuo)(zuo)使(shi)(shi)用(yong)說明中(zhong)都有規(gui)定)。
　　二、如何解決高低溫(wen)(wen)試(shi)驗箱在運行過(guo)程中，溫(wen)(wen)度變化達不(bu)到試(shi)驗溫(wen)(wen)度值？
　　在(zai)高(gao)溫(wen)(wen)試(shi)驗中，如(ru)溫(wen)(wen)度(du)變化達不到試(shi)驗溫(wen)(wen)度(du)值時，可(ke)以檢查(cha)(cha)電器系(xi)統(tong)，逐一(yi)排(pai)除故障(zhang)。如(ru)高(gao)低溫(wen)(wen)試(shi)驗箱溫(wen)(wen)度(du)升(sheng)得(de)很慢(man)，就要(yao)(yao)查(cha)(cha)看風(feng)循環系(xi)統(tong)，看一(yi)下(xia)風(feng)循環的調節擋板是(shi)否開啟正常，反(fan)之(zhi)，就檢查(cha)(cha)風(feng)循環的電機運轉是(shi)否正常。如(ru)溫(wen)(wen)度(du)過沖(chong)厲害那么(me)就需要(yao)(yao)整定PID的設置參(can)數。如(ru)果溫(wen)(wen)度(du)直接上升(sheng)，過溫(wen)(wen)保護，那么(me)控制器出故障(zhang)，須更換(huan)控制儀(yi)表。
　　三、高低溫試驗(yan)箱在濕熱試驗(yan)過程中，濕度達不(bu)到要求，是哪(na)里出(chu)現(xian)問(wen)題(ti)？
　　高(gao)低溫(wen)(wen)試(shi)(shi)驗(yan)(yan)箱在做(zuo)濕(shi)(shi)(shi)熱(re)試(shi)(shi)驗(yan)(yan)中(zhong)(zhong)，出現(xian)(xian)(xian)實際(ji)濕(shi)(shi)(shi)度(du)會達到或(huo)者實際(ji)濕(shi)(shi)(shi)度(du)與目標濕(shi)(shi)(shi)度(du)相差很大，數值低得很多，前者的(de)(de)現(xian)(xian)(xian)象(xiang)：可能是(shi)(shi)濕(shi)(shi)(shi)球傳感(gan)(gan)器(qi)上的(de)(de)紗(sha)(sha)布(bu)(bu)干燥引(yin)起，那就要檢(jian)(jian)查(cha)濕(shi)(shi)(shi)球傳感(gan)(gan)器(qi)的(de)(de)水(shui)(shui)(shui)(shui)槽(cao)中(zhong)(zhong)是(shi)(shi)否(fou)(fou)(fou)缺水(shui)(shui)(shui)(shui)，水(shui)(shui)(shui)(shui)槽(cao)中(zhong)(zhong)的(de)(de)水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)是(shi)(shi)由一(yi)水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)控制(zhi)(zhi)器(qi)自動控制(zhi)(zhi)的(de)(de)，查(cha)水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)控制(zhi)(zhi)器(qi)供水(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)是(shi)(shi)否(fou)(fou)(fou)供水(shui)(shui)(shui)(shui)正(zheng)常，水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)控制(zhi)(zhi)器(qi)工作(zuo)是(shi)(shi)否(fou)(fou)(fou)正(zheng)常。另(ling)一(yi)種可能就是(shi)(shi)濕(shi)(shi)(shi)球紗(sha)(sha)布(bu)(bu)因(yin)使(shi)用時(shi)間(jian)長，或(huo)供水(shui)(shui)(shui)(shui)水(shui)(shui)(shui)(shui)質純凈度(du)的(de)(de)原因(yin)，會使(shi)紗(sha)(sha)布(bu)(bu)變(bian)硬，使(shi)紗(sha)(sha)布(bu)(bu)無法吸收水(shui)(shui)(shui)(shui)份而干燥，只要更(geng)換(huan)或(huo)清洗紗(sha)(sha)布(bu)(bu)即可排除以上現(xian)(xian)(xian)象(xiang)。后(hou)者的(de)(de)現(xian)(xian)(xian)象(xiang)主要是(shi)(shi)高(gao)低溫(wen)(wen)試(shi)(shi)驗(yan)(yan)箱的(de)(de)加(jia)(jia)(jia)濕(shi)(shi)(shi)系(xi)統(tong)(tong)不工作(zuo)，查(cha)看加(jia)(jia)(jia)濕(shi)(shi)(shi)系(xi)統(tong)(tong)的(de)(de)供水(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)，供水(shui)(shui)(shui)(shui)系(xi)統(tong)(tong)內(nei)是(shi)(shi)否(fou)(fou)(fou)有一(yi)定的(de)(de)水(shui)(shui)(shui)(shui)量，控制(zhi)(zhi)加(jia)(jia)(jia)濕(shi)(shi)(shi)鍋爐水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)的(de)(de)水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)控制(zhi)(zhi)是(shi)(shi)否(fou)(fou)(fou)正(zheng)常，加(jia)(jia)(jia)濕(shi)(shi)(shi)鍋爐內(nei)的(de)(de)水(shui)(shui)(shui)(shui)位(wei)(wei)(wei)是(shi)(shi)否(fou)(fou)(fou)正(zheng)常。如以上一(yi)切(qie)都正(zheng)常，那就要檢(jian)(jian)查(cha)電器(qi)控制(zhi)(zhi)系(xi)統(tong)(tong)，請專(zhuan)業維修人員進(jin)行檢(jian)(jian)修。高(gao)低溫(wen)(wen)試(shi)(shi)驗(yan)(yan)箱，因(yin)為(wei)有使(shi)用時(shi)限(xian)，所以運行時(shi)間(jian)超長的(de)(de)高(gao)低溫(wen)(wen)試(shi)(shi)驗(yan)(yan)箱，難免會出現(xian)(xian)(xian)一(yi)些各種各樣的(de)(de)小故障，平時(shi)注意定期保養和(he)維護，一(yi)般都可以大部分避免。