產品概述
GB1410絕緣高阻測試儀被測(ce)電(dian)(dian)(dian)(dian)阻(zu)Rx等于(yu)施加電(dian)(dian)(dian)(dian)壓(ya)V除以(yi)通(tong)(tong)過(guo)的(de)(de)電(dian)(dian)(dian)(dian)流I。傳統的(de)(de)高阻(zu)計的(de)(de)工作原理(li)是(shi)測(ce)量電(dian)(dian)(dian)(dian)壓(ya)V固定(ding),通(tong)(tong)過(guo)測(ce)量流過(guo)取樣電(dian)(dian)(dian)(dian)阻(zu)的(de)(de)電(dian)(dian)(dian)(dian)流I來得到電(dian)(dian)(dian)(dian)阻(zu)值。從歐(ou)姆定(ding)律可以(yi)看(kan)出,由(you)于(yu)電(dian)(dian)(dian)(dian)流I是(shi)與電(dian)(dian)(dian)(dian)阻(zu)成反(fan)比(bi),而不(bu)(bu)是(shi)成正(zheng)比(bi),所以(yi)電(dian)(dian)(dian)(dian)阻(zu)的(de)(de)顯示值是(shi)非(fei)線性(xing)的(de)(de),即(ji)電(dian)(dian)(dian)(dian)阻(zu)無窮大時(shi),電(dian)(dian)(dian)(dian)流為零,即(ji)表頭(tou)的(de)(de)零位處是(shi)∞,其附近的(de)(de)刻(ke)度非(fei)常密,分(fen)辨率很低(di)。整個刻(ke)度是(shi)非(fei)線性(xing)的(de)(de)。又由(you)于(yu)測(ce)量不(bu)(bu)同的(de)(de)電(dian)(dian)(dian)(dian)阻(zu)時(shi),其電(dian)(dian)(dian)(dian)壓(ya)V也(ye)會(hui)有(you)些變化,所以(yi)普通(tong)(tong)的(de)(de)高阻(zu)計是(shi)精度差、分(fen)辨率低(di)。
GB1410絕緣高阻測試儀技術指標
1、電阻測(ce)量(liang)范圍: 1×104Ω ~1×1018Ω。
2、電(dian)流測(ce)量范圍(wei)為: 2×10-4A~1×10-16A
3、內置測試電壓: 10V 、50V、100V、250、500、1000V基本準確度:1% (*注)使用環境: 溫(wen)度:0℃~40℃,相對(dui)濕度<80%
電(dian)導和電(dian)導率是(shi)什么關系(xi):
電(dian)(dian)導(dao)(dao)率(lv),物理學概念(nian),指在(zai)介(jie)質(zhi)中該量與電(dian)(dian)場強度之(zhi)積等于(yu)傳(chuan)導(dao)(dao)電(dian)(dian)流(liu)密(mi)度。對于(yu)各(ge)向同性介(jie)質(zhi),電(dian)(dian)導(dao)(dao)率(lv)是(shi)(shi)標(biao)量;對于(yu)各(ge)向異(yi)性介(jie)質(zhi),電(dian)(dian)導(dao)(dao)率(lv)是(shi)(shi)張量。生態學中,電(dian)(dian)導(dao)(dao)率(lv)是(shi)(shi)以數字表示的溶液傳(chuan)導(dao)(dao)電(dian)(dian)流(liu)的能力。單位(wei)以西門子每米(S/m)表示。
(1)英(ying)文(wen):conductivity(orspecific conductance)
(2)定(ding)義(yi):電(dian)阻率的(de)倒數為電(dian)導率,用(yong)希臘字母κ表示(shi)(或者γ[1]),κ=1/ρ。除(chu)非特(te)別指明(ming),電(dian)導率的(de)測量(liang)溫(wen)度是標準溫(wen)度( 25 °C )。
(3)單(dan)位(wei):在國際單(dan)位(wei)制中,電導率的(de)單(dan)位(wei)稱為西門子/米(S/m),其(qi)它單(dan)位(wei)有:MS/m,S/cm,μS/cm。1S/m=1000mS/m=1000000μS/m=10mS/cm=10000μS/cm。
- 上一個: BEST-380薄膜直流體積電阻率測試儀
- 下(xia)一個(ge): BEST-380表面電阻率體積電阻測試儀