[恒溫恒濕試驗箱]可程式恒溫恒濕試驗箱試驗時要考慮的問題
[恒溫恒濕試驗箱]可程式恒溫恒濕試驗(yan)(yan)箱試驗(yan)(yan)時要考慮的問題
1.可程式(shi)恒溫恒濕試驗箱(xiang)內空(kong)間(jian)容積(ji)與樣品體積(ji)的比值(zhi)應不小(xiao)于(yu) 3∶1,使工作室有足(zu)夠的熱容量(liang)。此外,箱(xiang)內樣品的擺(bai)放位置不能(neng)(neng)阻礙空(kong)氣的對流,應居中放置,以免(mian)讓箱(xiang)內溫濕度效能(neng)(neng)降(jiang)低。
2.如果可(ke)程(cheng)式恒溫恒濕(shi)試(shi)(shi)(shi)驗(yan)(yan)箱用(yong)戶測(ce)試(shi)(shi)(shi)條件是(shi)從(cong)常(chang)溫先(xian)(xian)進入(ru)高(gao)(gao)溫,然后(hou)從(cong)高(gao)(gao)溫轉入(ru)低(di)(di)溫,按(an)這一做法,試(shi)(shi)(shi)驗(yan)(yan)結束時(shi)產品(pin)正處于(yu)從(cong)低(di)(di)溫到常(chang)溫的過程(cheng)。此時(shi)直接將(jiang)樣(yang)(yang)(yang)品(pin)取出,往往在(zai)其(qi)內外(wai)表面(mian)會產生凝(ning)露或濕(shi)潤,容易對(dui)樣(yang)(yang)(yang)品(pin)*終結果造(zao)成(cheng)不佳影(ying)響(xiang),因(yin)此需要恒溫恒濕(shi)試(shi)(shi)(shi)驗(yan)(yan)箱設置50℃的高(gao)(gao)溫下(xia)恢復(fu),從(cong)而(er)加長試(shi)(shi)(shi)驗(yan)(yan)周期。因(yin)此,在(zai)進行(xing)試(shi)(shi)(shi)驗(yan)(yan)時(shi),為(wei)減少試(shi)(shi)(shi)驗(yan)(yan)周期,可(ke)以先(xian)(xian)從(cong)低(di)(di)溫開始,這樣(yang)(yang)(yang),試(shi)(shi)(shi)驗(yan)(yan)結束時(shi),樣(yang)(yang)(yang)品(pin)正處于(yu)從(cong)高(gao)(gao)溫到常(chang)溫的過程(cheng),從(cong)而(er)避免樣(yang)(yang)(yang)品(pin)內外(wai)表面(mian)產生凝(ning)露或濕(shi)潤。
廣(guang)東(dong)劍(jian)喬(qiao)試(shi)驗設(she)備(bei)有限公司是專注于(yu)振(zhen)(zhen)動及環境試(shi)驗設(she)備(bei)研發、生產(chan)(chan)(chan)、銷售(shou)大型生產(chan)(chan)(chan)廠家,主營產(chan)(chan)(chan)品:振(zhen)(zhen)動臺、振(zhen)(zhen)動試(shi)驗機、振(zhen)(zhen)動試(shi)驗臺、沖擊試(shi)驗臺、沖擊試(shi)驗機、老化房(fang)、恒溫恒濕試(shi)驗室、恒溫恒濕機、快速溫變試(shi)驗箱(xiang)、高低溫試(shi)驗箱(xiang)、冷熱沖擊試(shi)驗箱(xiang)、冷熱沖擊箱(xiang)、恒溫恒濕箱(xiang)、恒溫恒濕試(shi)驗箱(xiang)等產(chan)(chan)(chan)品。