明泰(tai)電氣（蘇(su)州(zhou)）有限(xian)公司(si)是正(zheng)泰(tai)集團(tuan)在蘇(su)州(zhou)地區一家授權的(de)經銷企業，連續十年(nian)銷量居正(zheng)泰(tai)營銷網(wang)絡名，公司(si)主要經營“正(zheng)泰(tai)”牌配電電器、控制電器、終(zhong)端電器、電源電器、電力電子、儀器儀表(biao)、建筑電器、高壓電器及成套設備。

直流(liu)(liu)(liu)(liu)電(dian)流(liu)(liu)(liu)(liu)表主要采用(yong)磁電(dian)系(xi)或電(dian)動系(xi)測(ce)量機(ji)構(gou)(見機(ji)械式指(zhi)示電(dian)表測(ce)量機(ji)構(gou))，這些測(ce)量機(ji)構(gou)的測(ce)量基(ji)本量是電(dian)流(liu)(liu)(liu)(liu)，可(ke)用(yong)來直接測(ce)小電(dian)流(liu)(liu)(liu)(liu)。對(dui)于大量值的直流(liu)(liu)(liu)(liu)電(dian)流(liu)(liu)(liu)(liu)，磁電(dian)系(xi)測(ce)量機(ji)構(gou)要使(shi)用(yong)分(fen)(fen)(fen)流(liu)(liu)(liu)(liu)器，正泰電(dian)流(liu)(liu)(liu)(liu)表廠家，也就是并(bing)聯電(dian)阻。它的作(zuo)用(yong)是將大部(bu)分(fen)(fen)(fen)被測(ce)電(dian)流(liu)(liu)(liu)(liu)分(fen)(fen)(fen)流(liu)(liu)(liu)(liu)。對(dui)約10A以下(xia)的電(dian)流(liu)(liu)(liu)(liu)多(duo)采用(yong)內附(fu)分(fen)(fen)(fen)流(liu)(liu)(liu)(liu)器;對(dui)更大的電(dian)流(liu)(liu)(liu)(liu)值，則(ze)使(shi)用(yong)分(fen)(fen)(fen)流(liu)(liu)(liu)(liu)器。

電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)是根據通電(dian)(dian)(dian)(dian)(dian)導體(ti)在磁(ci)(ci)場(chang)中受磁(ci)(ci)場(chang)力(li)的(de)作用而制(zhi)成的(de)。電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)內部有(you)(you)(you)一(yi)永磁(ci)(ci)體(ti)，在極間(jian)產生(sheng)磁(ci)(ci)場(chang)，在磁(ci)(ci)場(chang)中有(you)(you)(you)一(yi)個線(xian)圈，線(xian)圈兩端各有(you)(you)(you)一(yi)個游絲彈(dan)簧(huang)(huang)，彈(dan)簧(huang)(huang)各連接(jie)(jie)電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)的(de)一(yi)個接(jie)(jie)線(xian)柱(zhu)，在彈(dan)簧(huang)(huang)與線(xian)圈間(jian)由一(yi)個轉軸連接(jie)(jie)，在轉軸相對于電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)的(de)前端，有(you)(you)(you)一(yi)個指(zhi)針。指(zhi)針偏轉。由于磁(ci)(ci)場(chang)力(li)的(de)大(da)(da)小隨電(dian)(dian)(dian)(dian)(dian)流(liu)增大(da)(da)而增大(da)(da)，所以就可(ke)以通過指(zhi)針的(de)偏轉程(cheng)度來(lai)觀察電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)大(da)(da)小。一(yi)般可(ke)直接(jie)(jie)測量微(wei)安或毫(hao)安數量級(ji)的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)，為測更(geng)大(da)(da)的(de)電(dian)(dian)(dian)(dian)(dian)流(liu)，電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)應(ying)有(you)(you)(you)并聯電(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)（又稱分流(liu)器(qi)）。主要采用磁(ci)(ci)電(dian)(dian)(dian)(dian)(dian)系電(dian)(dian)(dian)(dian)(dian)表(biao)的(de)測量機(ji)構。分流(liu)器(qi)的(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)值要使(shi)滿量程(cheng)電(dian)(dian)(dian)(dian)(dian)流(liu)通過時，正泰電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)供應(ying)商(shang)，電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)滿偏轉，正泰電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)，即電(dian)(dian)(dian)(dian)(dian)流(liu)表(biao)指(zhi)示達到醉大(da)(da)。

明泰電(dian)(dian)氣（蘇州）有(you)限公司(si)是正(zheng)(zheng)泰集(ji)團在蘇州地區一家授權的(de)經(jing)銷(xiao)(xiao)企業，連續十年銷(xiao)(xiao)量(liang)居(ju)正(zheng)(zheng)泰營銷(xiao)(xiao)網絡名，公司(si)主要經(jing)營“正(zheng)(zheng)泰”牌配電(dian)(dian)電(dian)(dian)器、控(kong)制電(dian)(dian)器、終端(duan)電(dian)(dian)器、電(dian)(dian)源(yuan)電(dian)(dian)器、電(dian)(dian)力電(dian)(dian)子、儀器儀表、建筑電(dian)(dian)器、高壓電(dian)(dian)器及成(cheng)套設備。

量(liang)程的選擇。要(yao)充(chong)分(fen)發揮儀(yi)表(biao)準確度的作用，正泰電(dian)流表(biao)價(jia)格(ge)，還必(bi)須根據被測量(liang)的大(da)(da)小，合理選用儀(yi)表(biao)量(liang)限，如(ru)選擇不當，其(qi)測量(liang)誤差將會很(hen)大(da)(da)。一般使(shi)儀(yi)表(biao)對被測量(liang)的指示大(da)(da)于(yu)儀(yi)表(biao)醉大(da)(da)量(liang)程的1/2~2/3以上，而(er)不能(neng)超過其(qi)醉大(da)(da)量(liang)程。

內(nei)阻的(de)(de)選擇。選擇儀表(biao)(biao)時，還應(ying)(ying)根據被測阻抗的(de)(de)大(da)小(xiao)(xiao)來選擇儀表(biao)(biao)的(de)(de)內(nei)阻，否則會帶(dai)來較大(da)的(de)(de)測量(liang)誤差(cha)。因內(nei)阻的(de)(de)大(da)小(xiao)(xiao)反映儀表(biao)(biao)本身功率(lv)的(de)(de)消耗，所(suo)以，測量(liang)電(dian)流(liu)時，應(ying)(ying)選用內(nei)阻盡可能小(xiao)(xiao)的(de)(de)電(dian)流(liu)表(biao)(biao)；測量(liang)電(dian)壓時，應(ying)(ying)選用內(nei)阻盡可能大(da)的(de)(de)電(dian)壓表(biao)(biao)。