液体增塑剂体积电阻率测定�?参数-价格-中国粉体罐�/title>

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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><a><strong>ZST-121<strong>液体增塑剂体积电阻率测定�?/strong></strong>使用说明</p><p><a><span><strong>（一）应满足下例要求９�/strong></span></p><p>1、测试电压范围应包括�?00V~500V</p><p>2、高阻测量范围应包括�?��106��~1��1017��</p><p>3、阻值大� 1012��时，测量误差应小�?#177;20%，阻值不大于 1012��时，测量误差应小��10%、�/p><p>4、输入接线的绝缘电阻应大于仪器输入电阻的 100 倍、�/p><p>5、测试时试样及测量导线应有良好屏蔽、�/p><p>6、仪器应定期进行校验、�/p><p><a><span><strong> （二）准备工作：</strong></span></p><p>1、取被测液体（如：增塑剂）试� 50ml、�/p><p>2、试样应在温� 23��2℃，相对湿度 65��5%的条件下处理 2 小时以上、�/p><p><a><span><strong>（三）测试步骤：</strong></span></p><p>1、测试温� 23��2℃，相对湿度 65��5%，无外界电磁场干扰环境中进行、�/p><p>2、测试时对试样所加电压为 100V~500V 的直流电压，选择电压档次、�/p><p>3、将试样倒入高压电极内，使液面刚好和环电极下缘全部接触为止、�/p><p>4、将充分放电后的试样和电极，按高阻计要求接线、�/p><p> 外电极（高压电极）接高阻计的高压输出端、�/p><p> 内电极（测量电极）接高阻计的测量端、�/p><p> 中电极（环电极）接高阻计的接地端、�/p><p>5、仪器预� 30 分钟，稳定后调整仪器（调零），加上试� 1 分钟，读取电阻指示值，然后放电 1 分钟，再测试一次，以二次的算术平均值作为试验样品电阻指示值、�/p><p><span><strong><a>（四）计算方法：</strong></span>按式�?）计算体积电阻系数（pv），计算结果取二位有效数字、�/p><p><a><span><strong>（五）注意事项：</strong></span></p><p>1、测定电极必须放置在高绝缘的垫板上、�/p><p>2、测定电极在测试前后，均应做好清洗工作，特别是三只电极的支撑件不得受到试样的污染、�/p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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