恒溫恒濕試驗箱(xiang)的(de)(de)加熱(re)(re)系統(tong)相對制冷系統(tong)而言，相對是比(bi)較簡單。它主(zhu)要有大功率(lv)電(dian)阻絲組成，由(you)于試驗箱(xiang)要求(qiu)的(de)(de)升溫速率(lv)非常大，因此(ci)試驗箱(xiang)的(de)(de)加熱(re)(re)系統(tong)功率(lv)都比(bi)非常大，而且在(zai)試驗箱(xiang)的(de)(de)底板也都設有加熱(re)(re)器的(de)(de)。

控(kong)制系(xi)統是(shi)試(shi)(shi)(shi)驗(yan)(yan)箱的核(he)i心控(kong)制部(bu)分(fen)，它決定了恒(heng)(heng)溫(wen)(wen)恒(heng)(heng)濕(shi)(shi)試(shi)(shi)(shi)驗(yan)(yan)箱的升溫(wen)(wen)速(su)率，精(jing)度等重要(yao)指標。現在的試(shi)(shi)(shi)驗(yan)(yan)箱控(kong)制器一般都采用(yong)PID控(kong)制，廣東步入式(shi)(shi)恒(heng)(heng)溫(wen)(wen)恒(heng)(heng)濕(shi)(shi)試(shi)(shi)(shi)驗(yan)(yan)箱，也有一小(xiao)部(bu)分(fen)是(shi)采用(yong)PID與模糊控(kong)制相組(zu)合的控(kong)制方式(shi)(shi)。由于控(kong)制系(xi)統基本上屬于軟件(jian)的范疇，步入式(shi)(shi)恒(heng)(heng)溫(wen)(wen)恒(heng)(heng)濕(shi)(shi)試(shi)(shi)(shi)驗(yan)(yan)箱供貨商，而且(qie)此部(bu)分(fen)在使用(yong)過程中，一般情況是(shi)不會出現什么問題的。

江蘇易騰(teng)檢測儀器(qi)有(you)限(xian)公司(si)是一家可(ke)靠性試驗(yan)設(she)備的制造(zao)商，我(wo)們專注于(yu)可(ke)靠性試驗(yan)已有(you)16余年(nian)，在此期(qi)間，步入式(shi)恒溫恒濕試驗(yan)箱價格，我(wo)們竭盡所能，努力為客戶提(ti)供完(wan)善的實驗(yan)室規(gui)劃方案(an)，匹配合適的試驗(yan)設(she)備。

恒(heng)溫恒(heng)濕試(shi)驗機(ji)的加濕原理：此過程是通過提高水(shui)汽(qi)分壓力，直接向(xiang)試(shi)驗機(ji)內的壁(bi)噴(pen)淋水(shui)，通過控制水(shui)溫使(shi)水(shui)表(biao)面(mian)飽和壓力得到控制。但此方法不可避(bi)免地有(you)水(shui)滴(di)淋在樣(yang)(yang)品上(shang)，從而對樣(yang)(yang)品造(zao)成污染(ran)，這一方法很快(kuai)就被蒸(zheng)汽(qi)加濕和淺水(shui)盤加濕所取代。

恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕試驗機加溫(wen)(wen)(wen)裝(zhuang)置是(shi)(shi)控(kong)(kong)制(zhi)恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕機是(shi)(shi)不是(shi)(shi)升(sheng)溫(wen)(wen)(wen)關鍵環節(jie)；它(ta)是(shi)(shi)控(kong)(kong)制(zhi)器(qi)(qi)得到(dao)(dao)升(sheng)溫(wen)(wen)(wen)指令時會(hui)輸出電(dian)(dian)壓給(gei)繼(ji)電(dian)(dian)器(qi)(qi)，大約(yue)3-12伏直流電(dian)(dian)加在固(gu)態(tai)(tai)繼(ji)電(dian)(dian)器(qi)(qi)上面；它(ta)的交流端相當(dang)于導線(xian)接通(tong)；接觸器(qi)(qi)也同時吸合，加熱器(qi)(qi)兩端有電(dian)(dian)壓使(shi)其發熱，通(tong)過(guo)循環風機帶動把熱量帶到(dao)(dao)箱里(li)，使(shi)恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕機升(sheng)溫(wen)(wen)(wen)，那溫(wen)(wen)(wen)度(du)快達(da)到(dao)(dao)你的設定值(zhi)；控(kong)(kong)制(zhi)器(qi)(qi)通(tong)過(guo)加在固(gu)態(tai)(tai)繼(ji)電(dian)(dian)器(qi)(qi)通(tong)斷調節(jie)；我們在恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕機看(kan)屏幕上加熱出力(li)多少(shao)來(lai)調節(jie)發熱量；這是(shi)(shi)在89度(du)以(yi)上溫(wen)(wen)(wen)度(du)控(kong)(kong)制(zhi)，在89度(du)以(yi)下溫(wen)(wen)(wen)度(du)穩定如何控(kong)(kong)制(zhi)呢？恒(heng)(heng)(heng)溫(wen)(wen)(wen)恒(heng)(heng)(heng)濕機是(shi)(shi)在一(yi)邊(bian)通(tong)過(guo)固(gu)態(tai)(tai)繼(ji)電(dian)(dian)器(qi)(qi)發熱出力(li)多少(shao)；另(ling)通(tong)過(guo)壓縮機制(zhi)冷循環降溫(wen)(wen)(wen)達(da)到(dao)(dao)動態(tai)(tai)平衡；溫(wen)(wen)(wen)度(du)恒(heng)(heng)(heng)定。