液(ye)體增塑劑電阻測量儀

概(gai)述

BEST- 121型高(gao)絕緣(yuan)(yuan)電(dian)阻測(ce)(ce)量儀(yi)(yi)用于測(ce)(ce)量絕緣(yuan)(yuan)材料(liao)(liao)、電(dian)工(gong)產品、各種(zhong)元器件的(de)(de)絕緣(yuan)(yuan)電(dian)阻；與恒溫水浴配套后，還能(neng)測(ce)(ce)量不(bu)同溫度(du)下的(de)(de)塑料(liao)(liao)電(dian)線電(dian)纜（無屏蔽(bi)層）的(de)(de)絕緣(yuan)(yuan)電(dian)阻，該儀(yi)(yi)器具有測(ce)(ce)量精度(du)高(gao)、性能(neng)穩定、操作簡單、輸入端高(gao)壓短(duan)路(lu)等優點，儀(yi)(yi)器的(de)(de)量程 1018Ω電(dian)阻值（測(ce)(ce)試電(dian)壓為(wei) 1000V）。 本儀(yi)(yi)表貫徹 Q/TPGG 7-2008 高(gao)絕緣(yuan)(yuan)電(dian)阻測(ce)(ce)量儀(yi)(yi)企(qi)業標準。

主要標(biao)準(zhun)：

GB/T 1410-2006 固體絕緣材料 體積電阻率和表(biao)面電阻率試驗方法

GB1672-8液(ye)體增塑劑體積電阻(zu)率的(de)測定(ding)

GB 12014 防靜電工作服

GB/T 20991-2007 個體防(fang)護裝備 鞋的(de)測(ce)試方法

GB 4385-1995 防靜電鞋、導電鞋技術(shu)要求

GB 12158-2006 防止靜電(dian)事故通用導(dao)則

GB 4655-2003 橡(xiang)膠工業靜電安全規(gui)程

GB/T  1692-2008 硫(liu)化橡膠絕緣電(dian)阻的測定

GB/T 12703.6-2010 紡織(zhi)品(pin) 靜電性能(neng)的評定 第6部分 纖維泄漏電阻

GB 13348-2009 液(ye)體石(shi)油產(chan)品靜電(dian)安全規程

GB/T 15738-2008 導電和抗靜電纖維增強塑料電阻率(lv)試驗方法(fa)

GB/T 18044-2008 地(di)毯 靜電習(xi)性評價法 行走試驗

GB/T 18864-2002 硫化橡(xiang)膠(jiao) 工業用抗(kang)靜(jing)電和導電產品 電阻極限(xian)范圍

GB/T 22042-2008 服裝 防靜電性(xing)能 表面電阻(zu)率試驗方法

GB/T 22043-2008 服裝 防靜電性能 通過材料的電阻(zu)(垂直電阻(zu))試驗方法

GB/T 24249-2009 防靜電潔凈織物(wu)

GB 26539-2011 防靜電陶瓷磚 Antistatic ceramic tile

GB/T 26825-2011 抗靜電(dian)防腐膠

GB 50515-2010 導(dao)(防(fang))靜(jing)電地面設(she)計(ji)規范

GB 50611-2010 電子工(gong)程防(fang)靜電設計規范

GJB 105-1998-Z 電子(zi)產品(pin)防靜電放電控(kong)制手冊

GJB 3007A-2009 防靜(jing)電(dian)工作(zuo)區(qu)技(ji)術要(yao)求

GJB 5104-2004 無(wu)線電(dian)引信風帽(mao)(mao)用防靜電(dian)涂料及(ji)風帽(mao)(mao)靜電(dian)性能通用要(yao)求

液體增(zeng)塑劑電(dian)阻測量儀(yi)

電阻率測試儀器如下◆★◆★◆★◆

1、 固(gu)體(ti)絕緣(yuan)材料體(ti)積表面電阻率測定(ding)儀(yi)

2、 硫化(hua)橡膠絕緣電阻率測(ce)定儀

3、 硫化(hua)橡(xiang)膠導電(dian)性(xing)和耗散性(xing)能電(dian)阻率測定儀(yi)

4、 石油罐導靜電涂料電阻率(lv)測定儀

5、 涂(tu)層(ceng)體(ti)積(ji)表面電阻率測定(ding)儀

6、 絕緣材料高溫電阻(zu)率(lv)測(ce)定儀

7、 紡(fang)織品電(dian)阻率測定(ding)儀

8、 液體絕(jue)緣(yuan)材料電阻率(lv)測(ce)量儀

9、 絕緣漆體(ti)積表面電阻系(xi)數(shu)測定儀

10、 石油(you)蠟和石油(you)脂(zhi)體積(ji)電(dian)阻(zu)率測定儀

11、 電(dian)絕緣粘合劑電(dian)阻率(lv)測(ce)定儀

12、 液(ye)體(ti)增塑劑體(ti)積電阻率測定儀(yi)

2 規格及技術特性(xing)及使用條件

2.1 規格和主要技術參數

測試電壓 （V）  10  50   100  250  500  1000

主要特點

 u    電阻測量(liang)范(fan)圍(wei) 1×104Ω ～1×;1018 Ω；

u    電流(liu)測量范(fan)圍(wei) 2×10-4Ａ ～1×10-16Ａ；

u    體積小、重量輕、準確(que)度高(gao)；

u   *的(de)被測電阻、和流過電阻的(de)電流雙顯(xian)示，使操(cao)作測量更加方便(bian)；

u   性能穩定、讀數方便；

u   既能(neng)(neng)測電阻又能(neng)(neng)測電流；

u   測試電壓有六種選(xuan)擇DC10V、50V、100V、250V、500V、1000V；

u   使(shi)用操作簡便，在任何電(dian)阻(zu)量(liang)程和測試電(dian)壓(ya)下均直接讀顯示數字結果，免去要乘以一個系(xi)數的麻煩，使(shi)測量(liang)超高電(dian)阻(zu)就如(ru)用萬用表測量(liang)普通電(dian)阻(zu)樣(yang)簡便。

 .2 使(shi)用條件(jian)

環境溫度： 0～40℃

相(xiang)對溫(wen)度：≤70%

供電電流：交流 220V±10%50Hz

儀(yi)器可連續(xu)工作 8 小時

消耗功率(lv)：約 10W

外形尺寸：長寬(kuan)深 355mm×320mm×145mm

重量：約 6kg(主(zhu)機)

①直流(liu)高壓電流(liu)輸出 ;10，50，100，500，1000V 五檔

②根(gen)據試樣的電阻值及(ji)直流高壓值選擇合(he)適的量程倍率。

③高輸入阻(zu)抗(kang)直流放大器(qi)（輸入阻(zu)抗(kang)>1015Ω）

④指(zhi)示儀表，指(zhi)示被(bei)測(ce)絕緣電阻(zu)。

⑤電源供給儀器各部分工作電源。

3.2 儀表作高(gao)(gao)阻(zu)(zu)測試時(shi)其主要原理如圖 2 所(suo)示，測試時(shi)被測試樣電(dian)阻(zu)(zu) Rx 與高(gao)(gao)阻(zu)(zu)抗直流放大

    器(qi)的輸入(ru)電阻(倍率電阻)“Ro”串聯并(bing)跨接(jie)于直流電源(yuan)上(shang),高阻抗直流放大器(qi)將其輸入(ru)

    電阻(zu)“Ro”上的分(fen)壓電壓 Uo 經(jing)放大后(hou)送指示(shi)器指示(shi)被測絕緣電阻(zu)值(zhi)。

工作原理(li) 

 ;       根據歐姆定(ding)律，被測電(dian)阻R等于施(shi)加電(dian)壓V除以(yi)通過的電(dian)流I。即   

   V

R= ---

   I

        傳統的(de)(de)(de)儀器的(de)(de)(de)工作(zuo)原理是(shi)(shi)測量電(dian)(dian)壓(ya)V固定，通過(guo)測量流(liu)過(guo)被(bei)測物(wu)體的(de)(de)(de)電(dian)(dian)流(liu)I以(yi)標定電(dian)(dian)阻(zu)的(de)(de)(de)刻(ke)度(du)(du)(du)來讀出電(dian)(dian)阻(zu)值。從上式可以(yi)看(kan)出，由于電(dian)(dian)流(liu)I是(shi)(shi)與電(dian)(dian)阻(zu)成反比(bi)，而不是(shi)(shi)成正比(bi)，所以(yi)電(dian)(dian)阻(zu)的(de)(de)(de)顯示值是(shi)(shi)非(fei)線(xian)性(xing)的(de)(de)(de)，即電(dian)(dian)阻(zu)無窮大時，電(dian)(dian)流(liu)為零，即表(biao)頭的(de)(de)(de)零位處是(shi)(shi)∞，其(qi)(qi)附(fu)近(jin)的(de)(de)(de)刻(ke)度(du)(du)(du)非(fei)常密，分辨率很低(di)。整個刻(ke)度(du)(du)(du)是(shi)(shi)非(fei)線(xian)性(xing)的(de)(de)(de)。又(you)由于測量不同的(de)(de)(de)電(dian)(dian)阻(zu)時，其(qi)(qi)電(dian)(dian)壓(ya)V也會(hui)有(you)些變化，所以(yi)普通的(de)(de)(de)高阻(zu)計(ji)的(de)(de)(de)精度(du)(du)(du)是(shi)(shi)很難提高的(de)(de)(de)。

       BEST-121體積、表面電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)率(lv)測(ce)(ce)(ce)(ce)定儀是同(tong)時測(ce)(ce)(ce)(ce)出電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)兩(liang)端的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)V和(he)流過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流I，通(tong)過(guo)內部(bu)的(de)(de)(de)大(da)規模集(ji)成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)路完成(cheng)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)除以(yi)電(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)計(ji)算(suan)，然后把所(suo)(suo)得到的(de)(de)(de)結果經過(guo)A/D轉換(huan)后以(yi)數字顯(xian)示出電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)，即(ji)便(bian)是電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)兩(liang)端的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)V和(he)流過(guo)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流I是同(tong)時變(bian)(bian)化(hua)，其顯(xian)示的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)(zhi)不象(xiang)普(pu)通(tong)高(gao)阻(zu)計(ji)那樣(yang)因被測(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)V的(de)(de)(de)變(bian)(bian)化(hua)或電(dian)(dian)(dian)(dian)(dian)(dian)流Ｉ的(de)(de)(de)變(bian)(bian)化(hua)而(er)變(bian)(bian)，所(suo)(suo)以(yi), 即(ji)使(shi)測(ce)(ce)(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)、被測(ce)(ce)(ce)(ce)量(liang)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)、電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)等發生(sheng)變(bian)(bian)化(hua)對其結果影響不大(da)，其測(ce)(ce)(ce)(ce)量(liang)精度很高(gao)。從理論上講其誤差可(ke)以(yi)做到零。而(er)實際誤差可(ke)以(yi)做到千分之幾(ji)或萬分之幾(ji)。

 安全注意事項

4.1 使用前務(wu)必詳閱此(ci)說明書，并遵照指示步驟，依次操作。

4.2 請(qing)勿使(shi)用非原廠(chang)提供(gong)之附件，以(yi)免發生危險。

4.3 進行測試時，本儀器(qi)測量端(duan)高(gao)壓輸出端(duan)上有直流高(gao)壓輸出，嚴禁人體(ti)接(jie)觸 ;，以免觸電。

4.4 為避免測試棒(bang)本(ben)身絕緣泄(xie)漏造成(cheng)誤(wu)差，接儀器測量端輸(shu)入的測試棒(bang)應(ying)盡(jin)可 能懸空，不與外界物體相碰。

4.5 當被(bei)測(ce)(ce)(ce)物(wu)絕(jue)緣(yuan)電阻值高，且測(ce)(ce)(ce)量出現指針(zhen)不穩現象時，可(ke)將(jiang)儀(yi)器測(ce)(ce)(ce)量線(xian)屏 蔽端夾(jia)子接(jie)上。 例如(ru)：對(dui)電纜(lan)(lan)測(ce)(ce)(ce)纜(lan)(lan)芯與(yu)纜(lan)(lan)殼(ke)的絕(jue)緣(yuan)時，除將(jiang)被(bei)測(ce)(ce)(ce)物(wu)兩(liang) 端分 別接(jie)于(yu)輸入(ru)端與(yu)高壓(ya) 端，再(zai)將(jiang)電纜(lan)(lan)殼(ke) ，芯之間的內(nei)層(ceng)絕(jue)緣(yuan)物(wu)接(jie)儀(yi)器 “G”，以(yi)消(xiao) 除因 表(biao)面漏電而 引起的測(ce)(ce)(ce)量誤(wu)差。也可(ke)用加屏蔽盒的方法(fa)， 即(ji)將(jiang)被(bei)測(ce)(ce)(ce)物(wu)置(zhi)于(yu)金(jin)屬屏蔽盒內(nei)，接(jie)上測(ce)(ce)(ce)量線(xian)。

  體(ti)(ti)積電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)表(biao)面(mian)(mian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)儀(yi)(yi)(yi)(yi)    型號(hao)：BEST-121本儀(yi)(yi)(yi)(yi)器(qi)(qi)*符合并優于國家標(biao)準(zhun)(zhun)GB1410《固體(ti)(ti)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)工(gong)(gong)(gong)絕(jue)緣材(cai)料(liao)(liao)絕(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)、體(ti)(ti)積電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)系(xi)數和表(biao)面(mian)(mian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa)》和美國標(biao)準(zhun)(zhun)ASTM D257《絕(jue)緣材(cai)料(liao)(liao)的(de)(de)(de)(de)直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)或(huo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)導(dao)(dao)(dao)試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa)》等(deng)標(biao)準(zhun)(zhun)的(de)(de)(de)(de)要求(qiu)。本儀(yi)(yi)(yi)(yi)器(qi)(qi)是既(ji)可(ke)測(ce)(ce)(ce)(ce)(ce)量(liang)高(gao)(gao)(gao)(gao)(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)，又(you)可(ke)測(ce)(ce)(ce)(ce)(ce)微電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。采用(yong)(yong)了美國Intel公司的(de)(de)(de)(de)大規(gui)(gui)模集成電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路以及(ji)技術(shu),使儀(yi)(yi)(yi)(yi)器(qi)(qi)體(ti)(ti)積小、重量(liang)輕(qing)、準(zhun)(zhun)確(que)度(du)(du)(du)高(gao)(gao)(gao)(gao)(gao)。以雙3.1/2 位數字(zi)直接顯示(shi)(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)的(de)(de)(de)(de)高(gao)(gao)(gao)(gao)(gao)阻(zu)(zu)(zu)(zu)計和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。量(liang)限(xian)從1×104Ω ～1×1018 Ω，是目(mu)前(qian)國內(nei)(nei)測(ce)(ce)(ce)(ce)(ce)量(liang)范(fan)圍(wei)(wei)寬(kuan)，準(zhun)(zhun)確(que)度(du)(du)(du)的(de)(de)(de)(de)數字(zi)超高(gao)(gao)(gao)(gao)(gao)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)量(liang)儀(yi)(yi)(yi)(yi)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流測(ce)(ce)(ce)(ce)(ce)量(liang)范(fan)圍(wei)(wei)為2×10-4 ～1×10-16Ａ。機內(nei)(nei)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為10/50/100/250/500/1000V任意可(ke)調。本儀(yi)(yi)(yi)(yi)器(qi)(qi)具有精(jing)度(du)(du)(du)高(gao)(gao)(gao)(gao)(gao)、顯示(shi)(shi)(shi)迅(xun)速、性(xing)好穩定、讀數方(fang)(fang)便(bian)， 適(shi)用(yong)(yong)于防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)產(chan)(chan)品如防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鞋(xie)、防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)塑料(liao)(liao)橡(xiang)膠(jiao)(jiao)(jiao)制(zhi)品、計算機房(fang)防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)活(huo)動地(di)板(ban)(ban)等(deng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值的(de)(de)(de)(de)檢驗(yan)以及(ji)絕(jue)緣材(cai)料(liao)(liao)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)產(chan)(chan)品的(de)(de)(de)(de)絕(jue)緣電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)量(liang)。本儀(yi)(yi)(yi)(yi)器(qi)(qi)除能測(ce)(ce)(ce)(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)外，還(huan)能直接測(ce)(ce)(ce)(ce)(ce)量(liang)微弱(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。 儀(yi)(yi)(yi)(yi)器(qi)(qi)特征：本儀(yi)(yi)(yi)(yi)器(qi)(qi)測(ce)(ce)(ce)(ce)(ce)量(liang)采用(yong)(yong)三電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)法(fa)(fa)(fa)(fa)對(dui)試(shi)(shi)樣進(jin)行(xing)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)，其(qi)試(shi)(shi)驗(yan)裝(zhuang)(zhuang)置(zhi)主要有平板(ban)(ban)式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)(ji)裝(zhuang)(zhuang)置(zhi)和高(gao)(gao)(gao)(gao)(gao)阻(zu)(zu)(zu)(zu)計兩部分組成。基本原(yuan)理(li)是對(dui)試(shi)(shi)樣加入(ru)不同(tong)擋位的(de)(de)(de)(de)直流電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)，流經試(shi)(shi)樣的(de)(de)(de)(de)微弱(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流用(yong)(yong)標(biao)準(zhun)(zhun)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)取樣放大后，從高(gao)(gao)(gao)(gao)(gao)阻(zu)(zu)(zu)(zu)計上讀出。數字(zi)直接顯示(shi)(shi)(shi)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)值,精(jing)度(du)(du)(du)高(gao)(gao)(gao)(gao)(gao)、顯示(shi)(shi)(shi)迅(xun)速、穩定性(xing)好、讀數方(fang)(fang)便(bian)。技術(shu)指(zhi)標(biao)：1.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)測(ce)(ce)(ce)(ce)(ce)量(liang)范(fan)圍(wei)(wei)： 0.01×104Ω ～1×1018Ω。2.電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流測(ce)(ce)(ce)(ce)(ce)量(liang)范(fan)圍(wei)(wei)為: 2×10-4A～1×10-16A3. 雙表(biao)頭顯示(shi)(shi)(shi): 3.1/2位LED顯示(shi)(shi)(shi)4. 內(nei)(nei)置(zhi)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)： 10V、50V、100V、250、500、1000V5. 基本準(zhun)(zhun)確(que)度(du)(du)(du)：1% （*注）6 使用(yong)(yong)環境(jing): 溫度(du)(du)(du)：0℃～40℃，相對(dui)濕度(du)(du)(du)<80%7 機內(nei)(nei)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya): 10/50/100/250/500/1000V 任意切換8.供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)形式: AC 220V，50HZ，功耗約5W適(shi)用(yong)(yong)的(de)(de)(de)(de)主要標(biao)準(zhun)(zhun)：GB/T 1410-2006 固體(ti)(ti)絕(jue)緣材(cai)料(liao)(liao) 體(ti)(ti)積電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)和表(biao)面(mian)(mian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa)  GB 12014 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)工(gong)(gong)(gong)作(zuo)服 GB/T 20991-2007 個體(ti)(ti)防(fang)(fang)(fang)(fang)(fang)(fang)護裝(zhuang)(zhuang)備(bei) 鞋(xie)的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)方(fang)(fang)法(fa)(fa)(fa)(fa)  GB 4385-1995 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鞋(xie)、導(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)鞋(xie)技術(shu)要求(qiu)   GB 12158-2006 防(fang)(fang)(fang)(fang)(fang)(fang)止靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)事故通(tong)用(yong)(yong)導(dao)(dao)(dao)則  GB 4655-2003 橡(xiang)膠(jiao)(jiao)(jiao)工(gong)(gong)(gong)業(ye)(ye)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)安(an)全規(gui)(gui)程  GB/T 12703.4-2010 紡(fang)織(zhi)(zhi)(zhi)品 靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能的(de)(de)(de)(de)評定 第(di)4部分 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)  GB/T 12703.6-2010 紡(fang)織(zhi)(zhi)(zhi)品 靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能的(de)(de)(de)(de)評定 第(di)6部分 纖維泄漏電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)  GB 13348-2009 液體(ti)(ti)石油產(chan)(chan)品靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)安(an)全規(gui)(gui)程 GB/T 15738-2008 導(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和抗靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纖維增強塑料(liao)(liao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa) GB/T 18044-2008 地(di)毯(tan) 靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)習性(xing)評價法(fa)(fa)(fa)(fa) 行(xing)走試(shi)(shi)驗(yan)  GB/T 18864-2002 硫化橡(xiang)膠(jiao)(jiao)(jiao) 工(gong)(gong)(gong)業(ye)(ye)用(yong)(yong)抗靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)和導(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)產(chan)(chan)品 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)極(ji)(ji)限(xian)范(fan)圍(wei)(wei)  GB/T 22042-2008 服裝(zhuang)(zhuang) 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能 表(biao)面(mian)(mian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)率(lv)(lv)試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa)  GB/T 22043-2008 服裝(zhuang)(zhuang) 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能 通(tong)過(guo)材(cai)料(liao)(liao)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)（垂(chui)直電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)(zu)(zu)）試(shi)(shi)驗(yan)方(fang)(fang)法(fa)(fa)(fa)(fa)  GB/T 24249-2009 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)潔凈織(zhi)(zhi)(zhi)物  GB 26539-2011 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)陶瓷磚 Antistatic ceramic tiles  GB/T 26825-2011 抗靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)防(fang)(fang)(fang)(fang)(fang)(fang)腐(fu)膠(jiao)(jiao)(jiao) GB 50515-2010 導(dao)(dao)(dao)（防(fang)(fang)(fang)(fang)(fang)(fang)）靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)地(di)面(mian)(mian)設(she)計規(gui)(gui)范(fan)  GB 50611-2010 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)工(gong)(gong)(gong)程防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)設(she)計規(gui)(gui)范(fan)  GJB 105-1998-Z 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)產(chan)(chan)品防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)放電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制(zhi)手冊  GJB 3007A-2009 防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)工(gong)(gong)(gong)作(zuo)區技術(shu)要求(qiu)  GJB 5104-2004 無線電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)引信風帽(mao)用(yong)(yong)防(fang)(fang)(fang)(fang)(fang)(fang)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)涂(tu)料(liao)(liao)及(ji)風帽(mao)靜(jing)(jing)(jing)(jing)(jing)(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)能通(tong)用(yong)(yong)要求(qiu)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)：（V） 10V 50V 100V 250V 500V 1000V 檔位 倍(bei)率(lv)(lv) 量(liang)限(xian)Ω 誤(wu)(wu)差 量(liang)限(xian)Ω 誤(wu)(wu)差 量(liang)限(xian)Ω 誤(wu)(wu)差 量(liang)限(xian)Ω 誤(wu)(wu)差 量(liang)限(xian)Ω 誤(wu)(wu)差 量(liang)限(xian)Ω 誤(wu)(wu)差 1 102 1×106—2×107 ±10% 5×106—1×108 ±10% 1×107—2×108 ±10% 2.5×107—5×108 ±10% 5×107—1×109 ±10% 1×108—2×109 ±10% 2 103 1×107—2×108 ±10% 5×107—1×109 ±10% 1×108—2×109 ±10% 2.5×108—5×109 ±10% 5×108—1×1010 ±10% 1×109—2×1010 ±10% 3 104 1×108—2×109 ±10% 5×108—1×1010 ±10% 1×109—2×1010 ±10% 2.5×109—5×1010 ±10% 5×109—1×1011 ±10% 1×1010—2×1011 ±10% 4 105 1×109—2×1010 ±10% 5×109—1×1011 ±10% 1×1010—2×1011 ±10% 2.5×1010—5×1011 ±10% 5×1010—1×1012 ±10% 1×1011—2×1012 ±10% 5 106 1×1010—2×1011±10%5×1010—1×1012 ±10% 1×1011—2×1012 ±10% 2.5×1011—5×1012 ±10% 5×1011—1×1013 ±20% 1×1012—2×1013 ±20% 6 107 1×1011—2×1012 ±10% 5×1011—1×1013 ±20% 1×1012—2×1013 ±20% 2.5×1012—5×1013 ±20% 5×1012—1×1014 ±20% 1×1013—2×1014 ±20% 7 108 1×1012—2×1013 ±20% 5×1012—1×1014 ±20% 1×1013—2×1014 ±20% 2.5×1013—5×1014 ±20% 5×1013—1×1015 ±20% 1×1014—2×1015 ±20% 8 109 1×1013—2×1014 ±20% 5×1013—1×1015 ±20% 1×1014—2×1015 ±20% 2.5×1014—5×1015 ±20% 5×1014—1×1016 ±20%1×1015—2×1016 

 產品簡介

液體增塑劑體積電阻率的測定GB1672-88 
標準說明
1.主題內容與適用范圍
本標準規定了液體增塑劑的體積電阻率的測定方法。
本標準適用于測定液體增塑劑的體積電阻率。其他液體助劑也可參照本測定方法。
2.體積電阻率的定義
是在試樣體積電流方向的直流電場強度與該處電流密度之比，以Ω?m表示。
3.試樣
3.1 液體增塑劑試樣每次用40ml左右。
3.2 試樣應無氣泡及雜質缺陷。
3.3 試樣應在溫度23±2℃、相對濕度60-70%的條件下放置2h以上。
4.測試儀器及電極 
4.1 高阻計
高阻計測試時應滿足下列要求：
a.高阻計測量范圍應包括1*106-1*1017Ω。
b.阻值大于1012Ω時，測量誤差小于±20%；阻值等于或小于1012Ω時，測量誤差應小于±10%。
c.零點飄移每小時不大于全標尺的4%。
d.輸入接線的絕緣電阻應大于儀器輸入電阻的100倍。
e.測試電路應有良好的屏蔽。
f.儀器應定期進行校驗。
4.2 電極
電極應由黃銅或不銹鋼制成。高壓電極內徑146mm，測量電極外徑120mm，護環寬度8mm，測量電極與高壓電極的間隙為2mm，電極工作面粗糙度為1.6以下。電級的開關和尺寸如圖1所示。
5.測定步驟
5.1 將經過處理后的試樣倒入高壓電極內，使液面剛好和測量表面全部接觸。
5.2 測試須在溫度23±2℃及相對濕度60-70%環境中進行。
5.3 試驗時，對試樣所加的電壓為100-500V的直流電壓。
5.4 將電極接入儀器測量端，調整儀器，按儀器說明書進行操作。加上試驗電壓1min，讀取電阻的指示值，同時須對試樣連續測定兩次，取兩次結果算術平均值。每次測定后試樣及地極要放電1min。
6.計算
體積電阻率ρv（Ω?m）按式（1）（2）計算：
        S＝π/4(D＋g)2   (1)
　　　　　　ρv＝Rv(S/d)　　（2）
式中         Rv——體積電阻，Ω；   
             S——平板測量電極的有效面積，m2；
             D——平板測量電極直徑，m；
             g——測量電極與保護電極間隙寬度，m；
      &nbsp;      d——試樣厚度，m。

儀(yi)器裝(zhuang)箱單(dan) 

 絕緣材料表面/體積電阻率測試儀(yi)

北(bei)廣精儀公司(si)電性能及橡(xiang)膠塑(su)料主營產品：

BWN萬能材(cai)料試驗機（電子萬能，金(jin)屬材(cai)料，非金(jin)屬材(cai)料，管材(cai)，高低溫，液壓伺服萬能試驗機）

BDJC-10KV-200KV電壓(ya)擊穿試驗儀（介(jie)，固體(ti)絕緣(yuan)材料電氣介(jie)電強度試驗機(ji)）

BEST-121體(ti)(ti)積表面電阻率測定(ding)儀（可測試固(gu)體(ti)(ti)液(ye)體(ti)(ti)膏體(ti)(ti)粉末材(cai)料）

BEST-212電(dian)線電(dian)纜導體半導體材料(liao)電(dian)阻率測試儀(yi)

M-200橡膠塑料滑(hua)動(dong)摩擦試驗機（國標，非國標，可定制(zhi)）

GDAT-A介電常數介質損耗測試(shi)儀（可測試(shi)固體液體

GDAT-C高頻介(jie)電常數介(jie)質(zhi)損耗測試儀

BDH-20KV絕緣(yuan)材料耐(nai)電弧性(xing)能試(shi)驗(yan)儀(yi)/高電壓小電流測試(shi)儀(yi)

BWK-300A熱(re)變(bian)形(xing)維卡軟化(hua)點(dian)溫(wen)度測定儀

BQYH-96塑料(liao)球(qiu)壓痕硬度(du)計

BRT-400Z熔體流動速(su)率(lv)測(ce)定儀(yi)/熔融指數儀(yi)

BMD-A計算機控制馬丁耐熱試驗(yan)儀

BRS-3水平垂直燃燒試(shi)驗(yan)儀

BDG-1000單根電線(xian)電纜垂直(zhi)燃燒試驗儀

BLD-600V漏電起痕(hen)試驗儀(yi)

BLD-6000V高壓漏電起痕試驗儀

BZY-A針焰(yan)試驗儀(yi)

BR-A灼(zhuo)熱(re)絲試驗(yan)儀(yi)

BDR-C導熱系(xi)數測(ce)定儀(yi)

BYX-2000海綿泡沫壓陷(xian)硬度測定(ding)儀

BLQ-500海綿(mian)泡沫落球回彈儀

BPL-2000海綿泡沫疲勞沖擊測定儀

BLS-1000海綿拉伸強度試(shi)驗(yan)機

BYS-200海綿壓縮變形試驗機

BQG-500海綿泡(pao)沫切割機

BMD-A海綿密度測定儀

BYZS-C氧指數測定儀

BR-B海綿泡(pao)沫(mo)阻燃性能(neng)試驗(yan)箱

BWD系類低溫脆性試(shi)驗機（單試(shi)樣(yang)、多(duo)試(shi)樣(yang)）

BJZL-A簡(jian)支梁沖擊試驗機(ji)（指針，數顯）

BXBL-A懸臂梁沖擊試驗機（指針，數顯）

BJX-A簡支梁(liang)懸臂梁(liang)組合沖擊試(shi)驗機（指針(zhen)，數顯）

BLC-2000落球(qiu)沖擊試(shi)驗機

BLB-30管(guan)材落(luo)鏢沖擊試驗機

BCM-03擺錘薄(bo)膜沖擊試驗機

BJS-300A金屬擺(bai)錘(chui)沖擊試驗機

BJS-300B全自動低溫沖擊試驗機

一、概況：(1)適用標準：GB/T 22042-2008《服裝 防靜電性能 表面電阻率試驗方法》；EN 1149-1-1995 《防護服 靜電性能 第1部分表面電阻檢驗方法和要求》；GB/T 1410-2006《固體絕緣材料體積電阻率和表面電阻率試驗方法》（與標準IEC93-1980等效）；FZ/T 64013-2008 《靜電植絨毛絨》；SJ/10694-2006《電子產品制造與應用系統防靜電檢測通用規范》6.1及ASTM D257《絕緣材料的直流電阻或電導試驗方法》要求制作。 GB/T 2439-2001《硫化橡膠或熱塑性橡膠 導電性能和耗散性能電阻率的測定》；GB/T 10581-2006 《絕緣材料在高溫下電阻和電阻率的試驗方法》 ；GB/T 1692-2008 《硫化橡膠絕緣電阻率的測定》；GB/T 12703.4-2010 《紡織品 靜電性能的評定 第４部分：電阻率》
GB/T 10064-2006《測定固體絕緣材料絕緣電阻的試驗方法》。
(2)適用范圍：適用于測量粉末、粉體、顆粒物、電子元器件、介質材料、電線電纜、防靜電產品、如防靜電鞋、防靜電塑料橡膠制品、計算機房防靜電活動地板等電阻值等絕緣性能的檢驗和電子電器產品的絕緣電阻測量。本儀器測量高電阻測微電流。
(3)特點：采用四探針測量法、儀器體積小、重量輕、高穩定性，高準確度的數字高阻測量儀器。本儀器配不同的測量電極(夾具)可以測量不同材料 (固體、粉體或液體)的體積電阻率和表面電阻率或電導率及方阻。
(4)材料的導電性是用電阻率ρ（單位：歐·米）或電導率σ（單位：歐^-1·米^-1）來表示的。兩者互為倒數，并且都與試樣的尺寸無關，而只決定于材料的性質。工程上習慣將材料根據導電性質粗略地分為超導體、導體、半導體和絕緣體四類。
二、表面電率阻率/體積電阻率測試儀技術指標     
1、電阻測量范圍：0.01×10⁴Ω ～1×10¹⁶Ω。
電 阻 率：1.0×10⁴ ～ 2.0×10¹⁶ Ω-m；方塊電阻：1.0×10⁴ ～ 2.0×10¹⁶ Ω/□
2、液晶顯示:  電阻率、方阻、壓強、溫度、電導率、電流電壓、可輸入測試樣品數據（圓柱：直徑，高度；方體：長*寬*高）單位可以切換（mm、cm、m）
3、內置測試電壓：0-1000V任意可設定
4、 基本準確度：1%
5、使用環境: 溫度：0℃～40℃，相對濕度<80%
6、機內測試電壓: 10/50/100/250/500/1000V 任意切換
7、供電形式: AC 220V，50HZ，功耗約5W
8、測量模式：手動/自動量程。帶PC測試軟件（選購），USB通訊接口，軟件界面同步顯示、分析、保存和打印數據！

 型超高阻(zu)(zu)(zu)微電流測試(shi)(shi)儀（高阻(zu)(zu)(zu)型體(ti)(ti)電阻(zu)(zu)(zu)率(lv)表(biao)面電阻(zu)(zu)(zu)率(lv)測試(shi)(shi)儀）是運用環形三電極法原(yuan)理測量固體(ti)(ti)絕緣(yuan)材(cai)料體(ti)(ti)積電阻(zu)(zu)(zu)率(lv)和(he)表(biao)面電阻(zu)(zu)(zu)率(lv)的多用途綜合(he)測量裝置，也可作(zuo)為超高阻(zu)(zu)(zu)計或微電流測試(shi)(shi)儀使用。該(gai)儀器設計符合(he)國家標準GB/T 1410－2006/IEC 60093:1980：《固體(ti)(ti)絕緣(yuan)材(cai)料體(ti)(ti)積電阻(zu)(zu)(zu)率(lv)和(he)表(biao)面電阻(zu)(zu)(zu)率(lv)試(shi)(shi)驗(yan)方法》。

     儀器成(cheng)套組成(cheng)：由(you)主機(ji)、標配的環形三電極、連(lian)接(jie)線纜(lan)等(deng)部分組成(cheng)。

     主機主要由高壓電源、微電流檢測(ce)計、嵌入式單片機系統組成。儀器所有參(can)數設定、功能轉換全(quan)部采用數字(zi)化鍵盤輸入；具有零位、滿度(du)校正(zheng)功能；可手(shou)動(dong)/自動(dong)轉換量(liang)程(cheng)；測(ce)試(shi)結果由數字(zi)表頭直(zhi)接(jie)顯示。

       電極選配(pei)(pei)：儀器配(pei)(pei)備標(biao)準環形三(san)電極，客戶也可以(yi)(yi)根(gen)據(ju)需(xu)要參(can)照國(guo)標(biao)，自備電極以(yi)(yi)擴大應用場合。

&nbsp;    儀器具有測量精(jing)度(du)高(gao)、靈敏度(du)高(gao)、穩定性好、智能(neng)化(hua)程度(du)高(gao)、結構緊湊(cou)、使用(yong)簡便等特點。

     儀器(qi)適用(yong)于(yu)工礦企業，科研院(yuan)所對于(yu)防(fang)靜電(dian)(dian)產品如防(fang)靜電(dian)(dian)鞋(xie)、防(fang)靜電(dian)(dian)塑料(liao)橡膠制品、計算機房防(fang)靜電(dian)(dian)活(huo)動地板等(deng)電(dian)(dian)阻值的(de)檢驗以及絕緣材料(liao)和電(dian)(dian)子電(dian)(dian)器(qi)產品的(de)絕緣電(dian)(dian)阻測量。也可用(yong)于(yu)微弱電(dian)(dian)流(liu)(liu)測量如光(guang)電(dian)(dian)效應(ying)和器(qi)件暗電(dian)(dian)流(liu)(liu)測量。

三(san)、基本技術(shu)參數

1. 常規測(ce)量(liang)范(fan)圍、分辨率（量(liang)程(cheng)可(ke)向上或下(xia)擴展1～2個數量(liang)級）

   電(dian)    阻：     1.0×103 ～ 2.0×1012  Ω,    &nbsp; 分辨率0.1×103 ～ 0.1×1012  Ω

   電 阻(zu) 率：     1.0×103 ～ 2.0×1012 Ω-m    分辨(bian)率0.1×103 ～ 0.1×1012  Ω-m

   方塊電(dian)阻： &nbsp;   1.0×104 ～ 2.0×1012 Ω/□  &nbsp;分辨率1.0×103 ～ 0.1×1012  Ω/□

2 工作電源：220V±10％, f=50Hz±4％,PW&le;20W

3 外形尺寸：W×H×L=280mm×90mm×275mm

   凈   重：&le;3.0kg

4 環形三(san)電極

    它(ta)是由(you)三個(ge)獨(du)立(li)的電極組成(cheng):

4.1中心為圓(yuan)柱體,直徑為50mm,高度是40mm。

4.2圓(yuan)柱體外(wai)為(wei)(wei)一圓(yuan)環,圓(yuan)環內徑為(wei)(wei)60mm,外(wai)徑為(wei)(wei)80mm, 高是40mm。

4.3底為一平板, 直徑為100mm的圓板，厚(hou)度(du)一般為10mm

 附加介(jie)紹：

 電阻率

電阻(zu)率是(shi)用來表示(shi)各種物質(zhi)電阻(zu)特性的(de)物理量。某(mou)種材料制成的(de)長(chang)1米、橫(heng)截面積是(shi)1平方(fang)毫(hao)米的(de)在常(chang)溫下(xia)（20℃時(shi)）導線的(de)電阻(zu)，叫做(zuo)這種材料的(de)電阻(zu)率。電阻(zu)率的(de)單(dan)(dan)位是(shi)歐姆·米(Ω·m或(huo)ohmm)，常(chang)用單(dan)(dan)位是(shi)歐姆·毫(hao)米和歐姆·米。

應用

 電(dian)(dian)阻(zu)率(lv)較低的物(wu)(wu)質被(bei)稱(cheng)為(wei)導體(ti)(ti)，常見導體(ti)(ti)主要為(wei)金屬(shu)，而自(zi)然界中導電(dian)(dian)性的是銀(yin)，其次為(wei)半導體(ti)(ti)，、硅鍺。當(dang)存在外電(dian)(dian)場時，金屬(shu)的自(zi)由(you)(you)電(dian)(dian)子(zi)(zi)(zi)在運動中不(bu)斷和晶格(ge)節點(dian)上做熱(re)振(zhen)子(zi)(zi)(zi)的正離子(zi)(zi)(zi)相碰(peng)撞，使電(dian)(dian)子(zi)(zi)(zi)運動受到阻(zu)礙，因而就(jiu)具有了一定的電(dian)(dian)阻(zu)。其他不(bu)易導電(dian)(dian)的物(wu)(wu)質如(ru)玻璃、橡膠等，電(dian)(dian)阻(zu)率(lv)較高，一般稱(cheng)為(wei)絕(jue)(jue)緣(yuan)體(ti)(ti)。介(jie)于(yu)導體(ti)(ti)和絕(jue)(jue)緣(yuan)體(ti)(ti)之間的物(wu)(wu)質(如(ru)硅) 則稱(cheng)半導體(ti)(ti)。電(dian)(dian)阻(zu)率(lv)的科學符(fu)號為(wei) ρ(Rho)。 已知物(wu)(wu)體(ti)(ti)的電(dian)(dian)阻(zu)，可由(you)(you)電(dian)(dian)阻(zu)率(lv)ρ、長(chang)度 l 與(yu)截面(mian)面(mian)積A 計(ji)算：ρ=RA/I，在該式中， 電(dian)(dian)阻(zu)R 單位(wei)為(wei)歐姆，長(chang)度 l 單位(wei)為(wei)米(mi)，截面(mian)面(mian)積 A 單位(wei)為(wei)平方米(mi)，電(dian)(dian)阻(zu)率(lv) ρ單位(wei)為(wei)

歐姆·米

計算(suan)公式

電阻率的計(ji)算公式為：ρ=RS/L

ρ為電阻率——常用單位Ω·m

S為橫截(jie)面積——常(chang)用單(dan)位(wei)㎡

R為電阻值——常(chang)用單位Ω

L為導(dao)線(xian)的(de)長度——常用單位(wei)m

-----------------------------------------

電(dian)阻率(lv)的另(ling)一計算公式為：ρ=E/J

ρ為電阻率——常用單位&Omega;·mm2/m[1]

E為電場(chang)強度——常用單位N/C

J為電流密(mi)度——常用單位A/㎡

（E，J 可以為矢量）

 說明(ming)

 1．電阻(zu)率ρ不僅(jin)和導(dao)體(ti)的材料(liao)有(you)關，還(huan)和導(dao)體(ti)的溫(wen)(wen)度(du)有(you)關。在溫(wen)(wen)度(du)變(bian)化不大的范(fan)圍內(nei)：幾乎所有(you)金屬(shu)的電阻(zu)率隨溫(wen)(wen)度(du)作線性變(bian)化，即ρ=ρo(1+at)。式(shi)中t是(shi)攝氏溫(wen)(wen)度(du)，&rho;o是(shi)O℃時的電阻(zu)率，a是(shi)電阻(zu)率溫(wen)(wen)度(du)系數。

2．由于電(dian)(dian)阻率隨溫度(du)改(gai)變而(er)改(gai)變，所以對于某些電(dian)(dian)器的電(dian)(dian)阻，必須說明它們所處(chu)的物理狀態(tai)。如(ru)一個220 V -100 W電(dian)(dian)燈燈絲的電(dian)(dian)阻，通(tong)電(dian)(dian)時(shi)是484歐(ou)姆，未(wei)通(tong)電(dian)(dian)時(shi)只有40歐(ou)姆左右(you)。

3．電(dian)(dian)阻(zu)(zu)率(lv)和電(dian)(dian)阻(zu)(zu)是兩個不同的概念。電(dian)(dian)阻(zu)(zu)率(lv)是反(fan)映(ying)物質對電(dian)(dian)流阻(zu)(zu)礙作用的屬性(xing)，電(dian)(dian)阻(zu)(zu)是反(fan)映(ying)物體對電(dian)(dian)流阻(zu)(zu)礙作用的屬性(xing)。

 總(zong)結：

 常(chang)態下（由表可知）導(dao)(dao)電(dian)性(xing)能的(de)依次是(shi)銀、銅(tong)、鋁(lv)，這(zhe)三(san)種材(cai)料是(shi)較常(chang)用的(de)，常(chang)被(bei)用來作(zuo)為(wei)導(dao)(dao)線(xian)(xian)等(deng)，其中(zhong)銅(tong)用的(de)較為(wei)廣(guang)(guang)，幾乎現(xian)在(zai)的(de)導(dao)(dao)線(xian)(xian)都是(shi)銅(tong)的(de)（精密(mi)儀(yi)器(qi)，特殊場(chang)(chang)合(he)(he)(he)除外）鋁(lv)線(xian)(xian)由于(yu)(yu)化(hua)學(xue)性(xing)質不穩定(ding)容易氧化(hua)已被(bei)淘汰(tai)。由于(yu)(yu)鋁(lv)密(mi)度小，取(qu)材(cai)廣(guang)(guang)泛，且價格比銅(tong)便宜，目前被(bei)廣(guang)(guang)泛用于(yu)(yu)電(dian)力系統中(zhong)傳輸電(dian)力的(de)架空輸電(dian)線(xian)(xian)路(lu)。為(wei)解決(jue)鋁(lv)材(cai)剛性(xing)不足缺陷，一(yi)般(ban)采(cai)(cai)用鋼芯鋁(lv)絞線(xian)(xian)，即鋁(lv)絞線(xian)(xian)內部包有(you)一(yi)根鋼線(xian)(xian)，以提高(gao)強度。銀導(dao)(dao)電(dian)性(xing)能，但(dan)由于(yu)(yu)成本高(gao)很(hen)少(shao)被(bei)采(cai)(cai)用，只(zhi)有(you)在(zai)高(gao)要求場(chang)(chang)合(he)(he)(he)才被(bei)使用，如精密(mi)儀(yi)器(qi)、高(gao)頻震蕩器(qi)、航(hang)天等(deng)。順便說下金(jin)，在(zai)某些場(chang)(chang)合(he)(he)(he)儀(yi)器(qi)上觸點也有(you)用金(jin)的(de)，那(nei)是(shi)因為(wei)金(jin)的(de)化(hua)學(xue)性(xing)質穩定(ding)故采(cai)(cai)用，并(bing)不是(shi)因為(wei)其電(dian)阻(zu)率小所致

 （1）溫度(du)和濕度(du)：固(gu)體(ti)(ti)絕(jue)(jue)緣(yuan)材料(liao)的(de)絕(jue)(jue)緣(yuan)電(dian)(dian)(dian)阻率(lv)隨溫度(du)和濕度(du)的(de)升高(gao)而(er)降低，特別(bie)是體(ti)(ti)積(ji)電(dian)(dian)(dian)阻率(lv)隨溫度(du)改變(bian)而(er)變(bian)化非常大。因(yin)(yin)此(ci)，電(dian)(dian)(dian)瓷材料(liao)不但要(yao)測定(ding)(ding)(ding)常溫下的(de)體(ti)(ti)積(ji)電(dian)(dian)(dian)阻率(lv)，而(er)且(qie)還要(yao)測定(ding)(ding)(ding)高(gao)溫下的(de)體(ti)(ti)積(ji)電(dian)(dian)(dian)阻率(lv)，以評定(ding)(ding)(ding)其絕(jue)(jue)緣(yuan)性能的(de)好壞(huai)。由于水(shui)的(de)電(dian)(dian)(dian)導大，隨著濕度(du)增大，表面(mian)電(dian)(dian)(dian)阻率(lv)和有(you)開口孔隙的(de)電(dian)(dian)(dian)瓷材料(liao)的(de)體(ti)(ti)積(ji)電(dian)(dian)(dian)阻率(lv)急劇下降。因(yin)(yin)此(ci)，測定(ding)(ding)(ding)時應嚴格地按照(zhao)規(gui)定(ding)(ding)(ding)的(de)試樣處理要(yao)求和測試的(de)環境條件下進行。

（2）電(dian)(dian)(dian)場(chang)(chang)強(qiang)度：當電(dian)(dian)(dian)場(chang)(chang)強(qiang)度比較高時(shi)，離子(zi)的遷移(yi)率(lv)隨電(dian)(dian)(dian)場(chang)(chang)強(qiang)度增高而增大(da)，而且在接(jie)近擊穿(chuan)時(shi)還會出(chu)現大(da)量的電(dian)(dian)(dian)子(zi)遷移(yi)，這(zhe)時(shi)體(ti)積電(dian)(dian)(dian)阻率(lv)大(da)大(da)地降低。因此(ci)在測定時(shi)，施加(jia)的電(dian)(dian)(dian)壓(ya)應不超過規定的值。

（3）殘余電荷：試(shi)樣在(zai)加工和測(ce)試(shi)等過程中(zhong)，可能產生靜電，電阻越高(gao)越容(rong)易產生靜電，影響測(ce)量的準(zhun)確性。因此，在(zai)測(ce)量時(shi)，試(shi)樣要(yao)*放電，即可將幾個電極連(lian)在(zai)一起(qi)進行短路。

（4）雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)的(de)(de)消除：在(zai)絕緣電(dian)(dian)(dian)阻(zu)(zu)測(ce)量(liang)(liang)電(dian)(dian)(dian)路中(zhong)，可能存在(zai)某些雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)，如熱電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)、電(dian)(dian)(dian)解電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)、接觸電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)等(deng)，其中(zhong)影響大的(de)(de)為電(dian)(dian)(dian)解電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)。用高(gao)阻(zu)(zu)計(ji)測(ce)量(liang)(liang)表面潮濕的(de)(de)試(shi)樣(yang)的(de)(de)體積電(dian)(dian)(dian)阻(zu)(zu)時，測(ce)量(liang)(liang)極(ji)與保(bao)護極(ji)間可產(chan)生(sheng)(sheng)20mv的(de)(de)電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)。試(shi)驗前應(ying)檢查有(you)無(wu)雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)。可根(gen)據試(shi)樣(yang)加壓前后高(gao)阻(zu)(zu)計(ji)的(de)(de)二次指示是否(fou)相(xiang)同來判斷有(you)無(wu)雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)。如相(xiang)同，證明無(wu)雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)；否(fou)則(ze)應(ying)當尋找并排除產(chan)生(sheng)(sheng)雜(za)散電(dian)(dian)(dian)勢(shi)(shi)(shi)(shi)(shi)的(de)(de)根(gen)源，才能進行測(ce)量(liang)(liang)。

（5）防止漏(lou)電(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)影響(xiang)：對(dui)于高(gao)電(dian)(dian)(dian)(dian)(dian)阻(zu)材料，只(zhi)有采取保(bao)(bao)護(hu)技(ji)術才(cai)能去(qu)除(chu)漏(lou)電(dian)(dian)(dian)(dian)(dian)流對(dui)測(ce)(ce)量(liang)(liang)(liang)的(de)(de)(de)影響(xiang)。保(bao)(bao)護(hu)技(ji)術就是在引起(qi)測(ce)(ce)量(liang)(liang)(liang)誤差的(de)(de)(de)漏(lou)電(dian)(dian)(dian)(dian)(dian)路(lu)徑上(shang)安置保(bao)(bao)護(hu)導體，截住可能引起(qi)測(ce)(ce)量(liang)(liang)(liang)誤差的(de)(de)(de)雜散電(dian)(dian)(dian)(dian)(dian)流，使之不流經測(ce)(ce)量(liang)(liang)(liang)回路(lu)或儀(yi)表。保(bao)(bao)護(hu)導體連(lian)接在一起(qi)構成(cheng)保(bao)(bao)護(hu)端(duan)，通常保(bao)(bao)護(hu)端(duan)接地。測(ce)(ce)量(liang)(liang)(liang)體積電(dian)(dian)(dian)(dian)(dian)阻(zu)時，三電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)系統的(de)(de)(de)保(bao)(bao)護(hu)極(ji)(ji)就是保(bao)(bao)護(hu)導體。此時要求保(bao)(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)和測(ce)(ce)量(liang)(liang)(liang)電(dian)(dian)(dian)(dian)(dian)極(ji)(ji)間的(de)(de)(de)試樣表面電(dian)(dian)(dian)(dian)(dian)阻(zu)高(gao)于與它并(bing)聯元件的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)10～100倍。線(xian)路(lu)接好后，應首先(xian)檢查是否存在漏(lou)電(dian)(dian)(dian)(dian)(dian)。此時斷開與試樣連(lian)接的(de)(de)(de)高(gao)壓線(xian)，加(jia)上(shang)電(dian)(dian)(dian)(dian)(dian)壓。如在測(ce)(ce)量(liang)(liang)(liang)靈敏度范圍內，測(ce)(ce)量(liang)(liang)(liang)儀(yi)器指示(shi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)阻(zu)值為無限大，則線(xian)路(lu)無漏(lou)電(dian)(dian)(dian)(dian)(dian)，可進行測(ce)(ce)量(liang)(liang)(liang)。

（6）條件處(chu)(chu)理(li)(li)(li)和測(ce)試條件的(de)規定:固體(ti)(ti)絕(jue)緣(yuan)材料(liao)(liao)的(de)電阻隨溫(wen)度、濕(shi)度的(de)增(zeng)加(jia)而下降。試樣的(de)預(yu)處(chu)(chu)理(li)(li)(li)條件取(qu)決于(yu)被(bei)測(ce)材料(liao)(liao)，這些條件在(zai)(zai)(zai)(zai)材料(liao)(liao)規范中(zhong)(zhong)規定。推薦使用GB10580《固體(ti)(ti)絕(jue)緣(yuan)材料(liao)(liao)在(zai)(zai)(zai)(zai)試驗前和試驗時采用的(de)標準條件》中(zhong)(zhong)規定的(de)預(yu)處(chu)(chu)理(li)(li)(li)方法。可使用甘油—水(shui)溶液潮(chao)濕(shi)箱進行(xing)濕(shi)度預(yu)處(chu)(chu)理(li)(li)(li)。測(ce)試條件應與預(yu)處(chu)(chu)理(li)(li)(li)條件盡可能(neng)地*，有些時候（如浸(jin)水(shui)處(chu)(chu)理(li)(li)(li)）不能(neng)保持預(yu)處(chu)(chu)理(li)(li)(li)條件和測(ce)試條件*時，則應在(zai)(zai)(zai)(zai)從預(yu)處(chu)(chu)理(li)(li)(li)環(huan)境(jing)中(zhong)(zhong)取(qu)出后在(zai)(zai)(zai)(zai)盡可能(neng)短時間(jian)內完成測(ce)試，一般不超過5分鐘。

（7）電(dian)化(hua)(hua)時(shi)間(jian)(jian)(jian)的(de)(de)(de)(de)規定:當直流(liu)電(dian)壓(ya)加到與(yu)試(shi)樣接觸(chu)的(de)(de)(de)(de)兩電(dian)極間(jian)(jian)(jian)時(shi)，通(tong)(tong)(tong)過(guo)試(shi)樣的(de)(de)(de)(de)電(dian)流(liu)會指數(shu)式(shi)地衰減(jian)(jian)到一個穩定值。電(dian)流(liu)隨(sui)時(shi)間(jian)(jian)(jian)的(de)(de)(de)(de)減(jian)(jian)小可(ke)能是由于(yu)電(dian)介質極化(hua)(hua)和(he)可(ke)動離子(zi)位移到電(dian)極所致。對于(yu)體(ti)(ti)積(ji)電(dian)阻(zu)率小于(yu)1010Ω·m的(de)(de)(de)(de)材料(liao)，其穩定狀(zhuang)態通(tong)(tong)(tong)常(chang)在1分鐘(zhong)(zhong)內達到。因(yin)此，要(yao)經(jing)過(guo)這個電(dian)化(hua)(hua)時(shi)間(jian)(jian)(jian)后測(ce)定電(dian)阻(zu)。對于(yu)電(dian)阻(zu)率較高(gao)的(de)(de)(de)(de)材料(liao)，電(dian)流(liu)減(jian)(jian)小的(de)(de)(de)(de)過(guo)程可(ke)能會持續幾分鐘(zhong)(zhong)、幾小時(shi)、幾天，因(yin)此需要(yao)用較長的(de)(de)(de)(de)電(dian)化(hua)(hua)時(shi)間(jian)(jian)(jian)。如果需要(yao)的(de)(de)(de)(de)話，可(ke)用體(ti)(ti)積(ji)電(dian)阻(zu)率與(yu)時(shi)間(jian)(jian)(jian)的(de)(de)(de)(de)關系來描(miao)述材料(liao)的(de)(de)(de)(de)特(te)性。當表面電(dian)阻(zu)較高(gao)時(shi)，它(ta)常(chang)隨(sui)時(shi)間(jian)(jian)(jian)以不規則(ze)的(de)(de)(de)(de)方式(shi)變化(hua)(hua)。測(ce)量表面電(dian)阻(zu)通(tong)(tong)(tong)常(chang)都(dou)規定1分鐘(zhong)(zhong)的(de)(de)(de)(de)電(dian)化(hua)(hua)時(shi)間(jian)(jian)(jian)

六、測(ce)量(liang)技(ji)術

a.通常，絕(jue)(jue)(jue)緣材(cai)料用于電氣系統的各部(bu)件(jian)相互絕(jue)(jue)(jue)緣和(he)對地絕(jue)(jue)(jue)緣，固(gu)體絕(jue)(jue)(jue)緣材(cai)料還(huan)起機(ji)械(xie)支撐作用。一般(ban)希(xi)望材(cai)料有(you)(you)盡可能高的絕(jue)(jue)(jue)緣電阻，并具有(you)(you)合適的機(ji)械(xie)、化(hua)學和(he)耐熱性能。

b.絕緣材料的電阻率一般都很(hen)高，也就是傳(chuan)導(dao)電流(liu)很(hen)小。如果(guo)不(bu)注意外(wai)界因素(su)的干擾和漏電流(liu)的影(ying)響，測量結果(guo)就會發生很(hen)大的誤差。同時絕緣材料本身的吸濕性和環境條(tiao)件的變化對測量結果(guo)也有很(hen)大影(ying)響。

c.影響(xiang)體(ti)(ti)積(ji)電(dian)(dian)阻(zu)(zu)率和表面電(dian)(dian)阻(zu)(zu)率測(ce)(ce)試(shi)的(de)主要因(yin)素是(shi)溫(wen)度(du)和濕(shi)度(du)、電(dian)(dian)場(chang)強度(du)、充電(dian)(dian)時間及殘余電(dian)(dian)荷等(deng)。體(ti)(ti)積(ji)電(dian)(dian)阻(zu)(zu)率可作(zuo)為選擇絕緣材(cai)(cai)料(liao)的(de)一個參數，電(dian)(dian)阻(zu)(zu)率隨溫(wen)度(du)和濕(shi)度(du)的(de)變化而顯著(zhu)變化。體(ti)(ti)積(ji)電(dian)(dian)阻(zu)(zu)率的(de)測(ce)(ce)量(liang)常常用(yong)來檢(jian)查絕緣材(cai)(cai)料(liao)是(shi)否均勻，或(huo)者用(yong)來檢(jian)測(ce)(ce)那(nei)些能影響(xiang)材(cai)(cai)料(liao)質量(liang)而又(you)不能用(yong)其(qi)他方法檢(jian)測(ce)(ce)到(dao)的(de)導電(dian)(dian)雜質。

d.由于體(ti)積電(dian)(dian)阻總(zong)是(shi)要被(bei)或(huo)多或(huo)少地(di)包(bao)括到表(biao)(biao)面(mian)電(dian)(dian)阻的測(ce)(ce)試(shi)中去(qu)，因此只能(neng)近似地(di)測(ce)(ce)量表(biao)(biao)面(mian)電(dian)(dian)阻，測(ce)(ce)得的表(biao)(biao)面(mian)電(dian)(dian)阻值(zhi)主要反映被(bei)測(ce)(ce)試(shi)樣表(biao)(biao)面(mian)污染(ran)的程度。所以(yi)，表(biao)(biao)面(mian)電(dian)(dian)阻率(lv)不(bu)是(shi)表(biao)(biao)征(zheng)材(cai)料(liao)本身(shen)特(te)性的參數，而是(shi)一(yi)個有關材(cai)料(liao)表(biao)(biao)面(mian)污染(ran)特(te)性的參數。當表(biao)(biao)面(mian)電(dian)(dian)阻較(jiao)高時，它常隨時間以(yi)不(bu)規則的方式(shi)變化(hua)。測(ce)(ce)量表(biao)(biao)面(mian)電(dian)(dian)阻通常都規定1min的電(dian)(dian)化(hua)時間。