EST121型数字超高阻、微电流测量�?参数-价格-中国粉体罐�/title>

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<p><span>EST121<span>型数字超高阻、微电流测量�?/span></p><p><span>一、概�?/span></p><p><span> EST121<span>型数字超高阻、微电流测量仪采用了美国的大规模集成电路以及我所�?*技�?/span><span>＋�/span><span>使仪器体积小、重量轻、准确度高。以友�/span><span>3.1/2 </span><span>位数字直接显示电阻的高阻计和电流。量限从</span><span>0.01</span><span>��</span><span>104</span><span>�� ｝�/span><span>1</span><span>��</span><span>1018 </span><span>��，是目前国内测量范围*宽，准确�?*的数字超高阻测量仪。电流测量范围为</span><span>2</span><span>��</span><span>10-4 </span><span>｝�/span><span>1</span><span>��</span><span>10-16</span><span>Ａ。机内测试电压为</span><span>10/50/100/250/500/1000V</span><span>任意可调。本仪器具有精度高、显示迅速、性好稳定、读数方便， 适用于防静电产品如防静电鞋、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验以及绝缘材料和电子电器产品的绝缘电阻测量。本仪器除能测电阻外，还能直接测量微弱电� 、�/span></p><p><span>EST121<span>型数字超高阻、微电流测量仪完全符合并优于国家标准</span><span>GB/T 1410-2006</span><span>《固体绝缘材� 体积电阻率和表面电阻率试验方法》和美国标准</span><span>ASTM D257</span><span>《绝缘材料的直流电阻或电导试验方法》等标准的要求。其准确度优于国家标准要求的几倍甚臲�/span><span>10</span><span>倍以三�/span><span>(</span><span>国家标准</span><span>GB/T1410-2006</span><span>《固体绝缘材� 体积电阻率和表面电阻率试验方法》对精确度的规定为低亍�/span><span>1010</span><span>���?#177;</span><span>10%� </span><span>更高电阻时为��</span><span>20%</span><span>、�/span><span>)</span><span>、�/span></p><p><span>适用的主要标准：</span></p><p><span> GB/T 1410-2006 <span>固体绝缘材料 体积电阻率和表面电阻率试验方泔�/span></p><p><span> GB 12014 <span>防静电工作服</span></p><p><span> GB/T 20991-2007 <span>个体防护装备 鞋的测试方法</span></p><p><span> GB 4385-1995 <span>防静电鞋、导电鞋技术要� </span></p><p><span> GB 12158-2006 <span>防止静电事故通用导则</span></p><p><span> GB 4655-2003 <span>橡胶工业静电安全规程</span></p><p><span> GB/T 12703.4-2010 <span>纺织� 静电性能的评� �?/span><span>4</span><span>部分 电阻玆�/span></p><p><span> GB/T 12703.6-2010 <span>纺织� 静电性能的评� �?/span><span>6</span><span>部分 纤维泄漏电阻</span></p><p><span> GB 13348-2009 <span>液体石油产品静电安全规程</span></p><p><span> GB/T 15738-2008 <span>导电和抗静电纤维增强塑料电阻率试验方泔�/span></p><p><span> GB/T 18044-2008 <span>地毯 静电习性评价法 行走试验</span></p><p><span> GB/T 18864-2002 <span>硫化橡胶 工业用抗静电和导电产� 电阻极限范围</span></p><p><span> GB/T 22042-2008 <span>服装 防静电性能 表面电阻率试验方泔�/span></p><p><span> GB/T 22043-2008 <span>服装 防静电性能 通过材料的电阺�/span><span>(</span><span>垂直电阻</span><span>)</span><span>试验方法</span></p><p><span> GB/T 24249-2009 <span>防静电洁净织物</span></p><p><span> GB 26539-2011 <span>防静电陶瓷砖 </span><span>Antistatic ceramic tiles</span></p><p><span> GB/T 26825-2011 <span>抗静电防腐胶</span></p><p><span> GB 50515-2010 <span>寻�/span><span>(</span><span>阱�/span><span>)</span><span>静电地面设计规范</span></p><p><span> GB 50611-2010 <span>电子工程防静电设计规茂�/span></p><p><span> GJB 105-1998-Z <span>电子产品防静电放电控制手冋�/span></p><p><span> GJB 3007A-2009 <span>防静电工作区技术要汁�/span></p><p><span> GJB 5104-2004 <span>无线电引信风帽用防静电涂料及风帽静电性能通用要求</span></p><p><span>　</span></p><p><span>二、主要特炸�/span></p><p><span>电阻测量范围� <span>0.01</span><span>��</span><span>104</span><span>�� ｝�/span><span>1</span><span>��</span><span>1018 </span><span>��</span></p><p><span>电流测量范围� <span>2</span><span>��</span><span>10-4</span><span>� ｝�/span><span>1</span><span>��</span><span>10-16</span><span>＠�/span></p><p><span>体积小、重量轻、准确度髗�/span></p><p><span>电阻、电流双显示</span></p><p><span>性能好稳定、读数方侾�/span></p><p><span>所有测试电厊�span>(10/50/100/250/500/1000V) </span><span>测试时电阻结果直读，免去老式高阻计在不同测试电压下或不同量程时要乘以系数等使用不便的麻烦� 使测量超高电阻就如用万用表测量普通电阻样简便、�/span></p><p><span>既能测超高电阻又能测微电�?/span></p><p><span>适用范围幾�span>:</span><span>适用于防静电产品如防静电鞋、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验和电子电器产品的绝缘电阻测野�/span></p><p><span>　</span></p><p><span>三、技术指栆�/span></p><p><span>1.<span>电阻测量范围� </span><span>0.01</span><span>��</span><span>104</span><span>�� ｝�/span><span>1</span><span>��</span><span>1018</span><span>��、�/span></p><p><span>2.<span>电流测量范围丹�/span><span>: 2</span><span>��</span><span>10-4A</span><span>｝�/span><span>1</span><span>��</span><span>10-16A</span></p><p><span>3. <span>双表头显礹�/span><span>: 3.1/2</span><span>佌�/span><span>LED</span><span>显示</span></p><p><span>4. <span>内置测试电压９�/span><span>10V</span><span>�?/span><span>50V</span><span>�?/span><span>100V</span><span>�?/span><span>250</span><span>�?/span><span>500</span><span>�?/span><span>1000V</span></p><p><span>5. <span>基本准确度：</span><span>1% </span></p><p><span>6 <span>使用环境</span><span>: </span><span>温度９�/span><span>0</span><span>℃～</span><span>40</span><span>℃，相对湿度</span><span><80%</span></p><p><span>7 <span>机内测试电压</span><span>: 10/50/100/250/500/1000V </span><span>任意切换</span></p><p><span>8.<span>供电形式</span><span>: AC 220V</span><span>＋�/span><span>50HZ</span><span>，功耗约</span><span>5W</span></p><p><span>9. <span>仪器尺寸</span><span>: 285</span><span>ｍｍ�� </span><span>245</span><span>ｍｍ�� </span><span>120 mm</span></p><p><span>10.<span>质量</span><span>: </span><span>�?/span><span>2.5KG</span></p><p><span>四、工作原琅�/span></p><p><span> 根据欧姆定律，被测电阺�span>Rx</span><span>等于施加电压</span><span>V</span><span>除以通过的电�?/span><span>I</span><span>。传统的高阻计的工作原理是测量电厊�/span><span>V</span><span>固定，通过测量流过取样电阻的电�?/span><span>I</span><span>来得到电阻值。从欧姆定律可以看出，由于电�?/span><span>I</span><span>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</span><span>V</span><span>也会有些变化，所以普通的高阻计是精度差、分辨率低、�/span></p><p><span>EST121<span>型数字高阻计是同时测出电阻两端的电压</span><span>V</span><span>和流过电阻的电流</span><span>I</span><span>，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迆�/span><span>A/D</span><span>转换后以数字显示出电阻值，即便是电阻两端的电压</span><span>V</span><span>和流过电阻的电流</span><span>I</span><span>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厊�/span><span>V</span><span>的变化或电流Ｉ的变化而变，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</span><span>(</span><span>**</span><span>)</span><span>，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。见计量检定证书－� </span><span>(</span><span>国家标准</span><span>GB/T1410-2006</span><span>《固体绝缘材� 体积电阻率和表面电阻率试验方法》对精确度的规定为低亍�/span><span>1010</span><span>���?#177;</span><span>10%� </span><span>更高电阻时为��</span><span>20%</span><span>、�/span><span>)</span></p><p><span>　</span></p><p><span>典型应用</span></p><p><span>1<span>．测量防静电鞋、导电鞋的电阻� </span></p><p><span>2<span>、测量防静电材料的电阻及电阻玆�/span></p><p><span>3<span>、测量计算机房用活动地板的系统电阻倻�/span></p><p><span>4<span>、测量绝缘材料电阺�/span><span>(</span><span>玆�/span><span>)</span></p><p><span>5<span>、光电二极管暗电流测野�/span></p><p><span>6<span>、物琅�/span><span>＋�/span><span>光学和材料研穵�/span></p><p><span>　</span></p><p><span>标准配置９�/span></p><p><span>1.<span>测试仪器９�/span><span>1</span><span>�?/span></p><p><span>2.<span>电源线：</span><span>1</span><span>杠�/span></p><p><span>3.<span>测量线：</span><span>3</span><span>根（屏蔽线、测试接线、接地线（�/span></p><p><span>4.<span>使用说明书：</span><span>1</span><span>仼�/span></p><p><span>其它可选配件：</span></p><p><span>本仪器配不同的测量电极（夹具）可以测量不同材料不（固体、粉体或液体）的体积电阻率和表面电阻率或电导率，完全符合或优于国家标凅�span>GB1410</span><span>，�/span><span>89</span><span>固体电工绝缘材料绝缘电阻、体积电阻系数和表面电阻试验方法＋�/span><span>ASTM D257 </span><span>绝缘材料的直流电阻或电导试验方法　等标准要求、�/span></p><p><span>表面电阻和体积电阻测试电极（三电极） 屏蔽箱　　 </span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 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