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1.DDS-307A數顯電(dian)導率(lv)儀(yi)工作條(tiao)件 環境溫度:5～35℃相對(dui)濕度:＜85％ 供電(dian)電(dian)源：220V±10% 50Hz±1Hz 無顯著的振(zhen)動(dong) 除地磁(ci)場(chang)外無其(qi)他強磁(ci)場(chang)干擾。

DDS-307數(shu)顯(xian)(xian)臺(tai)式電(dian)(dian)(dian)(dian)(dian)導率儀測(ce)試電(dian)(dian)(dian)(dian)(dian)導的方法，是(shi)通(tong)過由振蕩器(qi)產生的交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)壓加在電(dian)(dian)(dian)(dian)(dian)極上（加交(jiao)流(liu)電(dian)(dian)(dian)(dian)(dian)壓的目(mu)的是(shi)為了避免(mian)引起電(dian)(dian)(dian)(dian)(dian)極的極化），電(dian)(dian)(dian)(dian)(dian)導池(chi)內產生電(dian)(dian)(dian)(dian)(dian)流(liu)，此電(dian)(dian)(dian)(dian)(dian)流(liu)與被測(ce)溶液的電(dian)(dian)(dian)(dian)(dian)導率成正比，經電(dian)(dian)(dian)(dian)(dian)流(liu)-電(dian)(dian)(dian)(dian)(dian)壓變(bian)換、放大(da)、檢波，變(bian)換為直流(liu)電(dian)(dian)(dian)(dian)(dian)壓，通(tong)過溫(wen)度補(bu)償等，Z后經A/D轉換器(qi)轉換成數(shu)字信(xin)號，通(tong)過微電(dian)(dian)(dian)(dian)(dian)腦顯(xian)(xian)示(shi)。整個過程均由微電(dian)(dian)(dian)(dian)(dian)腦控制和處理。歡迎新來顧(gu)客，量大(da)優惠！