绝缘材料表面电阻测试仪BEST-121绝缘材料表面电阻测试仪符合标准：GB/T1410-2006固体绝缘材料体积电阻率和表面电阻率试验方法GB12014防静电工作服GB/T20991-2007个体防护装备鞋的测试方法GB4385-1995防静电鞋、导电鞋技术要求GB12158-2006防止静电事故通用导则GB4655-2003橡胶工业静电安全规程GB/T12703.4-2010纺织品静电性能的评定第4部分电阻率GB/T12703.6-2010纺织品静电性能的评定第6部分纤维泄漏电阻GB13348-2009液体石油产品静电安全规程GB/T15738-2008导电和抗静电纤维增强塑料电阻率试验方法GB/T18044-2008地毯静电习性评价法行走试验GB/T18864-2002硫化橡胶工业用抗静电和导电产品电阻极限范围GB/T22042-2008服装防静电性能表面电阻率试验方法GB/T22043-2008服装防静电性能通过材料的电阻（垂直电阻）试验方法GB/T24249-2009防静电洁净织物GB26539-2011防静电陶瓷砖AntistaticceramictilesGB/T26825-2011抗静电防腐胶GB50515-2010导（防）静电地面设计规范GB50611-2010电子工程防静电设计规范GJB105-1998-Z电子产品防静电放电控制手册GJB3007A-2009防静电工作区技术要求GJB5104-2004无线电引信风帽用防静电涂料及风帽静电性能通用要求绝缘材料表面电阻测试仪工作原理：根据欧姆定律,被测电阻Rx等于施加电压V除以通过的电流I。传统的高阻计的工作原理是测量电压V固定,通过测量流过取样电阻的电流I来得到电阻值。从欧姆定律可以看出,由于电流I是与电阻成反比,而不是成正比,所以电阻的显示值是非线性的,即电阻无穷大时,电流为零,即表头的零位处是∞,其附近的刻度非常密,分辨率很低。整个刻度是非线性的。又由于测量不同的电阻时,其电压V也会有些变化,所以普通的高阻计是精度差,分辨率低。本仪器是同时测出电阻两端的电压V和流过电阻的电流I,通过内部的大规模集成电路完成电压除以电流的计算,然后把所得到的结果经过A/D转换后以数字显示出电阻值,即便是电阻两端的电压V和流过电阻的电流I是同时变化,其显示的电阻值不象普通高阻计那样因被测电压V的变化或电流Ｉ的变而变,所以,即使测量电压,被测量电阻,电源电压等发生变化对其结果影响不大,其测量精度很高(专利),从理论上讲其误差可以做到零,而实际误差可以做到千分之几或万分之几。绝缘材料表面电阻测试仪主要应用范围材料高阻测试测量如防静电产品（防静电鞋、防静电塑料橡胶制品、计算机房防静电活动地板等）电阻值的检测；材料体电阻(率)和表面电阻(率)测量；电化学和材料测试,以及物理,光学和材料研究;微弱电流测量如光电效应和器件暗电流测量。绝缘材料表面电阻测试仪技术指标：1,电阻测量范围：0.01×104Ω～1×1018Ω。2,电流测量范围为：2×10-4A～1×10-16A3,显示方式：数字液晶显示4,内置测试电压：10V,50V,100V,250,500,1000V5,基本准确度：1%(*注)6,使用环境：温度：0℃～40℃,相对湿度<80%7,机内测试电压：10V/50V/100/250/500/1000V任意切换8,供电形式：AC220V,50HZ,功耗约5W9,仪器尺寸：285ｍｍ×245ｍｍ×120mm10,质量：约5KG绝缘材料表面电阻测试仪注意事项：仪器使用前请仔细阅读以下内容，否则将造成仪器损坏或***情况。1.检查仪器后面板电压量程是否置于10V档，电流电阻量程是否置于104档。2.接通电源调零，（注意此时主机不得与屏蔽箱线路连接）在“Rx”两端开路的情况下，调零使电流表的显示为0000。然后关机。3.将待测试样平铺在不保护电极正***，然后用保护电极压住样品，再插入被保护电极（不保护电极、保护电极、被保护电极应同轴且确认电极之间无短路）。4.测体积电阻时测试按钮拨到Rv边，测表面电阻时测试按钮拨到Rs边，5.接好测试线，将测试线将主机与屏蔽箱连接好。量程置于104档，打开主机后面板电源开关按钮。从仪器后面板调电压按钮到所要求的测量电压。(比如：GBT1692-2008硫化橡胶绝缘电阻率的测定标准中注明要求在500V电压进行测定，那么电压就要升到500V)6.电流电阻量程按钮从低档位逐渐拨***，每拨一次停留1-2秒观察显示数字，当被测电阻大于仪器测量量程时，电阻表显示“1”，此时应继续将仪器拨到量程更高的位置。测量仪器有显示值时应停下，在1min的电化时间后测量电阻，当前的数字乘以档次即是被测电阻。7.测试完毕先将量程拨至（104）档，然后将测量电压拨至10V档，***后将测试按钮拨到***位置后关闭电源。然后进行下一次测试。8.应在“Rx”两端开路时调零，一般一次调零后在测试过程中不需再调零。9.禁止将“RX”两端短路，以免微电流放大器受大电流冲击。10.不得在测试过程中不要随意改动测量电压。11.测量时从低次档逐渐拨往高次档。12.接通电源后，手指不能触及高压线的金属部分。13.不得测试过程中不能触摸微电流测试端。14.在测量高阻时，应采用屏蔽盒将被测物体屏蔽。15.严禁在试测过程随意改变电压量程及在通电过程中打开主机。16.严禁电流电阻量程未在104档及电压在10V档，更换试样。绝缘材料表面电阻测试仪Meetthestanda***:StandardTestMethodforbulkresistivityandsurfaceresistivityofsolidinsulatingmaterials,1410-2006GB/TGB12014anti-staticworkclothesTestmethodof20991-2007GB/Tpersonalprotectiveequipmentshoes4385-1995GBanti-staticshoes,conductiveshoestechnicalrequirementsGeneralguidelinesforthepreventionofelectrostaticaccidentswith12158-2006GBElectrostaticsafetyproceduresfor4655-2003GBrubberindustryThefourthpartoftheevaluationoftheelectrostaticpropertiesof12703.4-2010GB/TtextilesAsses***entoftheelectrostaticpropertiesof12703.6-2010GB/TtextilesinsixthpartfiberleakageresistanceElectrostaticsafetyregulati***for13348-2009GBliquidpetroleumproductsTestmethodforelectricalresistivityof15738-2008GB/Tconductiveandantistaticfiberreinforcedplastics18044-2008GB/Tcarpetstaticbeh***iorevaluationmethodwalkingtest18864-2002GB/TvulcanizedrubberindustrywithantistaticandconductiveproductsresistancelimitrangeTestmethodforsurfaceresistivityof22042-2008GB/TclothingagainststaticelectricityresistanceTestmethodforresistanceof22043-2008GB/Tclothingagainststaticelectricitythroughtheresistance(verticalresistance)ofthematerial24249-2009GB/Tantistaticcleanfabric26539-2011GBantistaticceramicbrickceramictilesAntistatic26825-2011GB/TantistaticanticorrosiveadhesiveSpecificationfordesignof50515-2010GB(anti)electrostaticgroundCodefordesignofESDprotectionfor50611-2010GBElectronicEngineeringManualofESDcontrolfor105-1998-ZGJBelectronicproductsTechnicalrequirementsof3007A-2009GJBantistaticworkingareaGeneralrequirementsforantielectrostaticcoatingandhoodelectrostaticperformanceusingGJB5104-2004radiofuzecapWorkingprinciple：AccordingtoOhm'slaw,themeasuredresistanceRxisequaltotheappliedvoltageVdividedbythecurrentI.ThetraditionalhighresistancemeterworksisthemeasurementofthevoltageVfixed,bymeasuringtheflowthroughthesamplingresistanceofthecurrentItogettheresistancevalue.FromOhm'slawcanbeseenasthecurrentIisinverselyproportionaltotheresistance,butnotproportional,soisnonlinearresistancedisplayvalueisinfiniteresistancewhenthecurrentiszero,whichiszeroattheheaderisinfinite,thescaleneartheverydense,lowresolution.Thewholescaleisnonlinear.Andsincethemeasurementofdifferentresistance,thevoltageVwillbesomechanges,sothe***eragehighresistancemeterispooraccuracy,lowresolution.ThisinstrumentisthecurrentflowingthroughtheresistorVandthevoltageacrosstheresistorImeasuredatthesametime,thelargescaleintegratedcircuittocompletethecalculationoftheinternalvoltagedividedbythecurrent,andthentheresultsobtainedafterA/Dconversionbythedigitaldisplayoftheresistancevalue,evenifthecurrentvoltageVandtheflowresistanceofthetwoendsoftheIischangedatthesametime,theresistancevalueisnotdisplayedasordinaryhighresistancemeterasaresultofthemeasuredvoltageorcurrentchangeofVIvariation,so,evenifthemeasuredvoltage,bymeasuringtheresistance,thepowersupplyvoltagechangesh***elittleeffectontheresults,themeasurementaccuracyisveryhigh(patent),theoreticallytheerrorcanbezero,whiletheactualerrorcanbedoneafewthousandthsorveryfew.MainapplicationrangeThemeasurementoftheresistancevalueofthematerials,suchasanti-staticproducts,anti-staticshoes,anti-staticplasticrubberproducts,computerroomandfloor,etc.;Materialvolumeresistance(rate)andsurfaceresistance(rate)measurement;Electrochemicalandmaterialtesting,aswellasphysical,optical,andmaterialstudies;Weakcurrentmeasurement,suchasphotoelectriceffectanddarkcurrentmeasurement.Technicalindex:1,resistancemeasurementrange:0.01*104~1*1018.2,thecurrentmeasurementrangeis:2*10-4A~1*10-16A3,displaymode:DigitalLCDdisplay4,built-intestvoltage:10V,50V,100V,2505001000V5,basicaccuracy:1%(*Note)6,theuseoftheenvironment:temperature:0degreesCelsiusto40degreesCelsius,therelativehumidityof<80%7,themachinetestvoltage:10V/50V/100/250/500/1000Varbitraryswitching8,theformofpowersupply:220VAC,50HZ,powerc***umptionisabout5W9,instrumentsize:285mm*245mm*120mm10,quality:about5KGMattersneedingattentionBeforeuse,pleasereadthefollowingcontentcarefully,otherwiseitwillcausedamagetotheinstrumentorelectricshock.1checktheinstrumentpanelvoltagerangeisplacedinthe10Vfile,thecurrentresistancerangeisplacedinthe104file.2switchonthepowerofzero,(notethatthehostisnotconnectedwiththeshieldboxline)inthe"Rx"atbothendsoftheopencircuit,zeroadjustmenttothecurrenttabledisplayis0000.Thenshutdown.3testsampleswillbelaidontheprotectionofthecentralelectrodeisnotused,thenpressprotectiveelectrodesamples,theninserttheprotectedelectrode(donotprotecttheelectrode,electrode,electrodeprotectionprotectionshouldbenoshortcircuitbetweenthecoaxialelectrodeandconfirm).4measurementofthevolumeresistancewhenthetestbuttontodialtheRvedge,thetestsurfaceresistancewhenthetestbuttontodialtheRsedge,5toconnectthetestline,thetestlinewillbeconnectedtothehostandshieldingbox.Rangein104stalls,openthehostafterthepanelpowerswitchbutton.Measuringthevoltagefromtherearpaneloftheinstrumenttotherequiredmeasurement.(forexample:1692-2008GBTvulcanizedrubberinsulationresistivitymeasurementstandardspecifiedinthe500Vvoltagemeasurement,thenthevoltagewillriseto500V)6currentresistancerangebuttonfromthelowplacesgraduallydialhigh-grade,eachallocatedastop1-2secondstoobservedisplaynumbers,whenthemeasuredresistanceisgreaterthantheinstrumentmeasurementrange,theresistancetableshows"1",thistimeshouldbeallocatedtotheinstrumentrangetoahigherposition.Measuringinstrumentsh***eadisplayvalueshouldbestopped,inthe1minoftheelectrochemicaltimeafterthemeasurementofresistance,thecurrentnumberismultipliedbythegradethatisthemeasuredresistance.7afterthetestiscompleted,themeasuringrangeissetto(104)file,andthenthemeasuringvoltageistransferredtothe10Vfile,andfinallythetestbuttonissettothecentralpositionandthenthepowersupplyisswitchedoff.Andthenproceedtothenexttest.8inthe"Rx"openendsatzero,generallyonetimeduringthetestwithoutzerozero.9prohibitthe"RX"atbothendsoftheshortcircuit,soasto***oidmicrocurrent)