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高低溫濕熱試驗箱類型

1.內箱尺寸： 1000×1000×1000mm（D×W×H）

2.溫度范(fan)圍： -70℃～150℃

3.濕(shi)度范圍： 30%RH～98%RH

4.溫度(du)波動度(du)： ≤±0.5℃

5.溫度偏差：   ≤±2.0℃

6.濕度(du)偏差：  +2.0/-3.0%RH

7.升(sheng)降(jiang)溫速率(lv)： 0.7～1℃／min

高低溫濕熱試驗箱類型?

    高(gao)低(di)(di)溫濕(shi)(shi)熱(re)試(shi)驗(yan)箱(xiang)加(jia)濕(shi)(shi)的(de)(de)(de)(de)過(guo)程實際上就是(shi)提高(gao)水(shui)(shui)汽(qi)分壓力，比較(jiao)原始的(de)(de)(de)(de)方(fang)法是(shi)向試(shi)驗(yan)箱(xiang)壁(bi)噴淋水(shui)(shui)，通過(guo)控(kong)(kong)制(zhi)(zhi)水(shui)(shui)溫使水(shui)(shui)表(biao)面飽和壓力得到控(kong)(kong)制(zhi)(zhi)。箱(xiang)壁(bi)表(biao)面的(de)(de)(de)(de)水(shui)(shui)形成(cheng)較(jiao)大的(de)(de)(de)(de)面，在這(zhe)個面上向高(gao)低(di)(di)溫濕(shi)(shi)熱(re)試(shi)驗(yan)箱(xiang)箱(xiang)內(nei)(nei)通過(guo)擴散的(de)(de)(de)(de)方(fang)式向箱(xiang)內(nei)(nei)加(jia)入水(shui)(shui)汽(qi)壓使試(shi)驗(yan)箱(xiang)中(zhong)相對(dui)(dui)(dui)濕(shi)(shi)度(du)升高(gao)，由(you)于(yu)對(dui)(dui)(dui)濕(shi)(shi)度(du)的(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)主要(yao)是(shi)用水(shui)(shui)銀電接點(dian)式導電表(biao)進(jin)行簡單的(de)(de)(de)(de)開關(guan)量調(diao)節，對(dui)(dui)(dui)于(yu)大滯(zhi)后的(de)(de)(de)(de)熱(re)水(shui)(shui)箱(xiang)水(shui)(shui)溫的(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)適應性較(jiao)差，因此控(kong)(kong)制(zhi)(zhi)的(de)(de)(de)(de)過(guo)渡過(guo)程較(jiao)長，不能(neng)滿足交變濕(shi)(shi)熱(re)對(dui)(dui)(dui)加(jia)濕(shi)(shi)量要(yao)求較(jiao)多(duo)的(de)(de)(de)(de)需要(yao)，更重要(yao)地(di)是(shi)在對(dui)(dui)(dui)箱(xiang)壁(bi)噴淋的(de)(de)(de)(de)時候，不可(ke)避免地(di)有水(shui)(shui)滴淋在試(shi)品(pin)上對(dui)(dui)(dui)試(shi)品(pin)形成(cheng)不同程度(du)的(de)(de)(de)(de)污染。同時對(dui)(dui)(dui)高(gao)低(di)(di)溫濕(shi)(shi)熱(re)試(shi)驗(yan)箱(xiang)箱(xiang)內(nei)(nei)排水(shui)(shui)也有一(yi)定的(de)(de)(de)(de)要(yao)求。?

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