UJ36a電位差計

可在實(shi)驗室(shi)、車間現場和野外工(gong)作，能很方便地以補(bu)償(chang)法原理，測(ce)量(liang)直流(liu)電(dian)(dian)(dian)(dian)壓（或電(dian)(dian)(dian)(dian)動勢）和對各種直流(liu)毫伏表及電(dian)(dian)(dian)(dian)子電(dian)(dian)(dian)(dian)位計進(jin)行(xing)刻(ke)度校正。如配備標準電(dian)(dian)(dian)(dian)阻，過(guo)渡電(dian)(dian)(dian)(dian)阻，也能對直流(liu)電(dian)(dian)(dian)(dian)阻、電(dian)(dian)(dian)(dian)流(liu)進(jin)行(xing)測(ce)量(liang)。

可配合各種測(ce)量溫(wen)度的熱電偶，能快速而(er)準確地檢測(ce)溫(wen)度，并能校驗二(er)次溫(wen)度儀表(biao)，是(shi)熱工測(ce)量上(shang)常備的測(ce)量工具(ju)。內附標準電池及晶體管放(fang)大指零儀。

 UJ36a電位差計 

主(zhu)要(yao)技術性(xing)能：

1、測量范圍：10μV～230mV

2、準(zhun)確度(du)：0.1%

3、工作電源：1.5V（1號干電池4節）；9V（6F22型電池2節）

4、外型尺(chi)寸：284×230×160（mm）

5、質量：4.4kg

 UJ36a電位差計

原理

本電(dian)(dian)(dian)位差計根據(ju)補償法原理制成(cheng)。調節RP阻值(zhi)、當工(gong)作電(dian)(dian)(dian)流(liu)(liu)I在RN上產生電(dian)(dian)(dian)壓(ya)降(jiang)等于(yu)標(biao)準(zhun)電(dian)(dian)(dian)池電(dian)(dian)(dian)勢值(zhi)EN時，如開(kai)關K打(da)入左邊，檢流(liu)(liu)計便(bian)指零，此時工(gong)作電(dian)(dian)(dian)流(liu)(liu)便(bian)準(zhun)確地等于(yu)6mA。上述步驟稱(cheng)為對“標(biao)準(zhun)”。

測(ce)量時，調(diao)節已知(zhi)電阻RP，其(qi)工作用(yong)電流6mA產生的電壓(ya)降等于被測(ce)值(zhi)UX時UX=IR，如(ru)開關K打入右邊，檢流計指零。從而可由(you)已知(zhi)的R阻值(zhi)大小(xiao)來反映UX數(shu)值(zhi)。