BC-330絕緣表面高阻測試儀主要應用范圍

材(cai)料高阻測(ce)試測(ce)量如防(fang)靜電(dian)產品（防(fang)靜電(dian)鞋、防(fang)靜電(dian)塑料橡膠(jiao)制(zhi)品、計算機房防(fang)靜電(dian)活動地板(ban)等）電(dian)阻值的檢測(ce)；

材(cai)料體電(dian)阻(率)和表面電(dian)阻(率)測量；

電化(hua)學和材料測試,以及物理,光學和材料研究;

 微(wei)弱(ruo)電(dian)流(liu)測量(liang)如(ru)光電(dian)效應和器(qi)件暗電(dian)流(liu)測量(liang)。

BC-330絕緣表面高阻測試儀技術指標

1.   電阻測量范(fan)圍(wei)： 1×106Ω ～1×1020Ω，分為十個量程。

2.   ;電(dian)流(liu)測量范圍為2×10-6A ～1×10-18A

3.  全彩色(se)觸摸屏顯示。

4.  準確(que)度: 準確(que)度優于下表:

( 超出有效(xiao)顯示范圍時誤差有可能增加(jia))測(ce)試電(dian)(dian)流(liu)準確度與電(dian)(dian)阻相同

測試(shi)電壓(ya)準確度(du)為 8%

5. 使用環境: 溫度(du) -10℃～50℃ 相對濕度(du)<90%。

6. 測試電壓(ya): DC10V、50V、100V、250V、500V、1000V。±10%

7. 供電(dian)形式: AC 220V，50HZ，功耗(hao)約(yue)10W。

8. 儀器尺寸: 390ｍｍ× 370ｍｍ× 170 mm。

9. 質量: 約5.0KG。

工作原理  

   &nbsp;    根據歐(ou)姆定(ding)律(lv)，被測(ce)電阻(zu)R等于施加電壓V除以通(tong)過的電流I。即(ji)   

   V

R= ---

   I

        傳統(tong)的(de)儀器(qi)的(de)工(gong)作原(yuan)理(li)是(shi)測量電(dian)(dian)壓(ya)V固定(ding)，通過測量流過被測物(wu)體的(de)電(dian)(dian)流I以(yi)標定(ding)電(dian)(dian)阻(zu)(zu)的(de)刻(ke)度(du)來讀出(chu)電(dian)(dian)阻(zu)(zu)值(zhi)。從上式可以(yi)看出(chu)，由于電(dian)(dian)流I是(shi)與電(dian)(dian)阻(zu)(zu)成(cheng)反比，而不是(shi)成(cheng)正比，所以(yi)電(dian)(dian)阻(zu)(zu)的(de)顯(xian)示值(zhi)是(shi)非線性的(de)，即(ji)電(dian)(dian)阻(zu)(zu)無窮(qiong)大時(shi)，電(dian)(dian)流為零，即(ji)表頭的(de)零位(wei)處是(shi)∞，其附近的(de)刻(ke)度(du)非常密，分辨率(lv)很(hen)低。整個刻(ke)度(du)是(shi)非線性的(de)。又由于測量不同的(de)電(dian)(dian)阻(zu)(zu)時(shi)，其電(dian)(dian)壓(ya)V也會有些變化，所以(yi)普通的(de)高阻(zu)(zu)計的(de)精度(du)是(shi)很(hen)難提(ti)高的(de)。

      體積(ji)、表面電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)率測(ce)定儀是同時測(ce)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)兩(liang)端(duan)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)V和流(liu)(liu)(liu)過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)I，通(tong)過(guo)內(nei)部的大規模集(ji)成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路完成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)除以電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的計算，然后把所(suo)得到的結果(guo)經過(guo)A/D轉換(huan)后以數字顯示出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)(zhi)，即便是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)兩(liang)端(duan)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)V和流(liu)(liu)(liu)過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)I是同時變化(hua)，其(qi)顯示的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值(zhi)(zhi)不象普通(tong)高阻(zu)(zu)計那(nei)樣因被測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)V的變化(hua)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)Ｉ的變化(hua)而變，所(suo)以, 即使測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、被測(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)等發生變化(hua)對其(qi)結果(guo)影響不大，其(qi)測(ce)量(liang)精度(du)很高。從(cong)理(li)論上講(jiang)其(qi)誤差可(ke)以做(zuo)到零。而實際誤差可(ke)以做(zuo)到千分之(zhi)幾(ji)或(huo)萬分之(zhi)幾(ji)。

使用方法接好電源線

確保電源為220VAC/50Hz

接通電源

    將電(dian)流電(dian)阻量程(cheng)置于 106檔(dang),電(dian)壓量程(cheng)置于10V，然后(hou)開(kai)機。（最(zui)左側）

連接線路

     接(jie)好測試線，將(jiang)測試線將(jiang)主機與屏蔽箱連接(jie)好，測體(ti)積電(dian)阻時(shi)測試按鈕(niu)(niu)撥到Rv邊(bian)，測表面電(dian)阻時(shi)測試按鈕(niu)(niu)撥到Rs邊(bian)。然后開機。

選擇合適的測量電壓

★電(dian)壓(ya)選擇(ze)開關，注(zhu)意，在測(ce)(ce)試(shi)過程中不要隨(sui)意改動測(ce)(ce)量電(dian)壓(ya)，可能(neng)因電(dian)壓(ya)的過高或電(dian)流過大(da)損壞被測(ce)(ce)試(shi)器件或測(ce)(ce)試(shi)儀(yi)器;