電熱鼓風干燥箱空間選擇：
將試驗(yan)(yan)工(gong)(gong)(gong)件(jian)置入(ru)試驗(yan)(yan)箱進(jin)行試驗(yan)(yan)時，為了保(bao)證試驗(yan)(yan)工(gong)(gong)(gong)件(jian)周圍氣(qi)氛能滿足(zu)試驗(yan)(yan)規范所規定的(de)(de)環境試驗(yan)(yan)條件(jian)，試驗(yan)(yan)工(gong)(gong)(gong)件(jian)的(de)(de)容(rong)積應不(bu)超過工(gong)(gong)(gong)作室容(rong)積的(de)(de)三分(fen)之二。鼓風(feng)干燥箱工(gong)(gong)(gong)作室內(nei)環境參數(shu)(shu)的(de)(de)精(jing)度指標都是在(zai)空載(zai)狀態下檢測(ce)的(de)(de)結果，一(yi)旦置入(ru)被(bei)測(ce)工(gong)(gong)(gong)件(jian)后(hou)，對(dui)試驗(yan)(yan)箱工(gong)(gong)(gong)作腔(qiang)內(nei)環境參數(shu)(shu)的(de)(de)均勻性將產生(sheng)影響，試驗(yan)(yan)件(jian)占有的(de)(de)空間越(yue)(yue)大(da)，這種影響也就越(yue)(yue)嚴重。
將試(shi)驗(yan)(yan)(yan)工(gong)(gong)件(jian)(jian)(jian)置(zhi)入箱(xiang)體后(hou)擠占了流(liu)暢的(de)(de)通(tong)道(dao)(dao)，通(tong)道(dao)(dao)變窄將導致氣(qi)流(liu)流(liu)速(su)的(de)(de)增加(jia)。加(jia)速(su)氣(qi)流(liu)與(yu)試(shi)驗(yan)(yan)(yan)工(gong)(gong)件(jian)(jian)(jian)之間的(de)(de)熱交換。這與(yu)環境條件(jian)(jian)(jian)的(de)(de)再現不(bu)符，因為在有關標準中對(dui)涉及(ji)溫度環境試(shi)驗(yan)(yan)(yan)都規定(ding)試(shi)驗(yan)(yan)(yan)箱(xiang)內(nei)試(shi)驗(yan)(yan)(yan)工(gong)(gong)件(jian)(jian)(jian)周圍的(de)(de)空氣(qi)流(liu)速(su)不(bu)應超過1.7m/s，以防(fang)止試(shi)驗(yan)(yan)(yan)工(gong)(gong)件(jian)(jian)(jian)和周圍氣(qi)氛(fen)產生不(bu)符合實(shi)際的(de)(de)熱傳導。如果在試(shi)驗(yan)(yan)(yan)中不(bu)加(jia)以限制加(jia)大試(shi)驗(yan)(yan)(yan)工(gong)(gong)件(jian)(jian)(jian)的(de)(de)體積或迎風斷(duan)面(mian)積，則實(shi)際試(shi)驗(yan)(yan)(yan)時氣(qi)流(liu)風速(su)將增大到超出試(shi)驗(yan)(yan)(yan)標準所規定(ding)的(de)(de)Z高風速(su)，其試(shi)驗(yan)(yan)(yan)結果的(de)(de)有效性將受(shou)到懷(huai)疑(yi)。
鼓風干燥箱根據(ju)熱傳導的原理，箱壁(bi)附近氣(qi)流的溫(wen)度(du)通(tong)常(chang)與(yu)流場中心溫(wen)度(du)相差2～3℃，在高溫(wen)的上下(xia)，還可能達到5℃。箱壁的溫度與箱壁附近流場的溫度又相差2～3℃(視箱壁的結構和材料而定)試驗溫度與外界大氣環境相差越大，上述溫差也越大，因此，距箱壁5cm距離內的空間是不可利用空間。
生活中烘箱(xiang)設(she)備的使(shi)用越(yue)來越(yue)廣泛，如(ru)下是烘箱(xiang)設(she)備的安全使(shi)用方法介紹

電熱鼓風干燥箱烘箱設備應安放在室內干凈的水平處,要保持干燥,做好防潮和防濕,并要防止腐蝕.烘箱設備放置處要有的空間,四面離墻體要有距離,建議要有2M以上。使用前要檢查電壓，較小的烘箱設備所需電壓為220V,較大的烘箱設備所需電壓為380V（三相四線）,根據烘箱設備耗電功率安裝足夠容量的電源閘刀。并且選用合適的電源導線。還應做好接地線工作。

以(yi)(yi)上(shang)工作(zuo)準備(bei)(bei)就緒后方可(ke)將試品放入烘(hong)(hong)箱(xiang)(xiang)(xiang)設備(bei)(bei)內(nei)，然后連接電源,開啟(qi)烘(hong)(hong)箱(xiang)(xiang)(xiang)設備(bei)(bei)開關,帶鼓風(feng)裝(zhuang)置(zhi)的烘(hong)(hong)箱(xiang)(xiang)(xiang)設備(bei)(bei)，在(zai)加熱(re)和恒溫(wen)的過程中(zhong)將鼓風(feng)機開啟(qi)，否則影(ying)響工作(zuo)室溫(wen)度的均(jun)勻性(xing),并且(qie)可(ke)能(neng)損(sun)壞(huai)加熱(re)元(yuan)件(jian)。隨后調節好適宜試品烘(hong)(hong)賠的溫(wen)度.烘(hong)(hong)箱(xiang)(xiang)(xiang)設備(bei)(bei)即進入工作(zuo)狀態。烘(hong)(hong)賠的物(wu)(wu)品排列不能(neng)太密(mi)。烘(hong)(hong)箱(xiang)(xiang)(xiang)設備(bei)(bei)底部（散熱(re)板）上(shang)不可(ke)放物(wu)(wu)品，以(yi)(yi)免影(ying)響熱(re)風(feng)循環(huan)。禁(jin)止烘(hong)(hong)賠易燃、易爆物(wu)(wu)品及有(you)揮發性(xing)和有(you)腐蝕性(xing)的物(wu)(wu)品。