怎樣才能讓高低溫試驗箱的溫度快速進入穩定狀態呢？

     首先，您知道高低(di)溫(wen)試驗箱(xiang)(xiang)的(de)用(yong)途有(you)哪些(xie)嗎？接到上級領導批準下來(lai)關于高低(di)溫(wen)試驗箱(xiang)(xiang)的(de)采(cai)購項目，這時您就需要了解(jie)它(ta)的(de)一些(xie)性能(neng)參數及用(yong)途。才能(neng)合理地選擇(ze)出理想的(de)儀器。下面由恒(heng)工(gong)科技(ji)的(de)小編跟您來(lai)分析(xi)下它(ta)的(de)一些(xie)主要用(yong)途及性能(neng)參數，供(gong)您選擇(ze)。
      
     高(gao)低溫(wen)試(shi)(shi)驗箱是用(yong)于做高(gao)溫(wen)，低溫(wen)試(shi)(shi)驗的(de)儀器設備(bei)。即(ji)將產品(pin)(pin)放入試(shi)(shi)驗箱內，設定好(hao)需(xu)要檢測的(de)高(gao)溫(wen)低溫(wen)條件及高(gao)低溫(wen)循環(huan)次數(shu)對產品(pin)(pin)進行高(gao)低溫(wen)測試(shi)(shi)，產品(pin)(pin)經過高(gao)低溫(wen)老(lao)化及高(gao)低溫(wen)循環(huan)測試(shi)(shi)之后(hou)，來(lai)評估高(gao)低溫(wen)試(shi)(shi)驗箱的(de)性(xing)能變(bian)化及可靠性(xing)。
         
    高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)回去測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)時(shi)，可(ke)能會出現高(gao)(gao)(gao)溫(wen)(wen)(wen)(wen)(wen)(wen)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)比較(jiao)難穩(wen)(wen)定(ding)，或(huo)者(zhe)需要長時(shi)間(jian)(jian)(jian)才能穩(wen)(wen)定(ding)，那該怎么(me)辦？有(you)什(shen)么(me)方(fang)法可(ke)以(yi)(yi)(yi)讓(rang)高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)快速恒定(ding)嗎？。 高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)箱(xiang)總的(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)容(rong)差2℃或(huo)3℃是考慮到(dao)了測(ce)(ce)(ce)量的(de)(de)絕對(dui)(dui)誤、溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)的(de)(de)緩(huan)慢(man)變化以(yi)(yi)(yi)及工作空(kong)間(jian)(jian)(jian)內(nei)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)變化而確定(ding)的(de)(de)，但是為(wei)了維(wei)(wei)持相對(dui)(dui)濕度(du)(du)(du)在(zai)(zai)規定(ding)的(de)(de)容(rong)差范圍內(nei)，在(zai)(zai)任意時(shi)刻工作空(kong)間(jian)(jian)(jian)內(nei)任何兩(liang)點(dian)之(zhi)間(jian)(jian)(jian)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)差必須維(wei)(wei)持在(zai)(zai)一個較(jiao)小的(de)(de)范圍內(nei)，如(ru)果溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)差超過(guo)1K，濕度(du)(du)(du)條件就(jiu)達不到(dao)要求，為(wei)了維(wei)(wei)持規定(ding)的(de)(de)濕度(du)(du)(du)，溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)短時(shi)間(jian)(jian)(jian)波動度(du)(du)(du)應(ying)維(wei)(wei)持在(zai)(zai)0.5℃，試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)樣品(pin)的(de)(de)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)應(ying)穩(wen)(wen)定(ding)在(zai)(zai)3℃之(zhi)間(jian)(jian)(jian)，通過(guo)以(yi)(yi)(yi)下方(fang)法達到(dao)穩(wen)(wen)定(ding)： 1.把(ba)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)樣品(pin)放入高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)測(ce)(ce)(ce)試(shi)(shi)(shi)(shi)(shi)(shi)箱(xiang)之(zhi)后，將箱(xiang)溫(wen)(wen)(wen)(wen)(wen)(wen)調至25℃，并保持到(dao)該試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)樣品(pin)達到(dao)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)穩(wen)(wen)定(ding)為(wei)止； 2.在(zai)(zai)把(ba)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)樣品(pin)放入高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)里之(zhi)前，先把(ba)高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)箱(xiang)樣品(pin)放置(zhi)在(zai)(zai)另一個箱(xiang)子里；尊敬的(de)(de)客(ke)戶(hu)，以(yi)(yi)(yi)上這兩(liang)種讓(rang)高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)箱(xiang)快速穩(wen)(wen)定(ding)的(de)(de)方(fang)法不論采用哪種，達到(dao)溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)穩(wen)(wen)定(ding)時(shi)間(jian)(jian)(jian)，其相對(dui)(dui)濕度(du)(du)(du)必須在(zai)(zai)規定(ding)的(de)(de)試(shi)(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)用的(de)(de)標準大氣條件下的(de)(de)限值內(nei)，樣品(pin)在(zai)(zai)高(gao)(gao)(gao)低(di)(di)溫(wen)(wen)(wen)(wen)(wen)(wen)循環箱(xiang)內(nei)穩(wen)(wen)定(ding)之(zhi)后，箱(xiang)內(nei)的(de)(de)相對(dui)(dui)濕度(du)(du)(du)應(ying)升到(dao)不小于95%，溫(wen)(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)為(wei)25℃。

高低溫交變濕(shi)熱(re)試(shi)驗箱制濕(shi)度系(xi)統

     東莞恒工(gong)加(jia)濕(shi)(shi)(shi)方(fang)式一(yi)般采用(yong)蒸(zheng)汽(qi)(qi)加(jia)濕(shi)(shi)(shi)法，即將低(di)壓蒸(zheng)汽(qi)(qi)直接注入高低(di)溫(wen)交變濕(shi)(shi)(shi)熱試驗箱內加(jia)濕(shi)(shi)(shi)。這種加(jia)濕(shi)(shi)(shi)方(fang)法加(jia)濕(shi)(shi)(shi)能力，速度快，加(jia)濕(shi)(shi)(shi)控制靈敏，尤其(qi)在降溫(wen)時容易實(shi)現強制加(jia)濕(shi)(shi)(shi)。

     除(chu)(chu)濕(shi)(shi)(shi)(shi)方(fang)式有(you)兩種：機械(xie)制(zhi)(zhi)冷(leng)(leng)除(chu)(chu)濕(shi)(shi)(shi)(shi)和干(gan)(gan)燥(zao)除(chu)(chu)濕(shi)(shi)(shi)(shi)。機械(xie)制(zhi)(zhi)冷(leng)(leng)除(chu)(chu)濕(shi)(shi)(shi)(shi)的(de)除(chu)(chu)濕(shi)(shi)(shi)(shi)原(yuan)理是將空(kong)氣(qi)(qi)冷(leng)(leng)卻到露(lu)點溫度(du)以下，使(shi)大于飽和含濕(shi)(shi)(shi)(shi)量的(de)水(shui)汽凝結析出，這(zhe)樣(yang)就降低了濕(shi)(shi)(shi)(shi)度(du)。干(gan)(gan)燥(zao)器(qi)除(chu)(chu)濕(shi)(shi)(shi)(shi)是利用(yong)氣(qi)(qi)泵將高低溫交變(bian)濕(shi)(shi)(shi)(shi)熱試驗箱(xiang)內的(de)空(kong)氣(qi)(qi)抽出，并將干(gan)(gan)燥(zao)的(de)空(kong)氣(qi)(qi)注入，同時將濕(shi)(shi)(shi)(shi)空(kong)氣(qi)(qi)送入可循(xun)環利用(yong)的(de)干(gan)(gan)燥(zao)進(jin)行(xing)干(gan)(gan)燥(zao)，干(gan)(gan)燥(zao)完后又送入試驗箱(xiang)內，如此反(fan)復循(xun)環進(jin)行(xing)除(chu)(chu)濕(shi)(shi)(shi)(shi)。現在大部分綜合(he)試驗箱(xiang)采(cai)用(yong)前一種除(chu)(chu)濕(shi)(shi)(shi)(shi)方(fang)式法，后一種的(de)除(chu)(chu)濕(shi)(shi)(shi)(shi)方(fang)法，可以使(shi)露(lu)點溫度(du)達(da)到0℃一下。適用(yong)于有(you)特殊(shu)要求的(de)場(chang)合(he)，但價格較貴。

文章(zhang)來源:東莞恒工(gong)設備有(you)限公司    業務聯系(xi)：潘(pan)先生