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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>电化学式传感器是以离子导电为基础制成,根据其电特性的形成不同,电化学传感器可分为电位式传感�?电导式传感器,电量式传感器,极谱式传感器和电解式传感器等 。电化学式传感器主要用于分析气体,液体或溶于液体的固体成分,液体的酸碱度,电导率及氧化还原电位等参数的测量，而EN-400型微量气体分析仪采用了进口高性能的电化学式气体传感器和微处理机技�?传感器是由膜电极和电解液灌封而成。气体浓度信号将电解液分解成阴阳带电离子，通过电极将信号传出。它的优点是：反映速度快、准确（可用于ppm级），稳定性好、能够定量检测，但寿命较短（大于等于两年），适用于对空气、氮气、氩气等气体中的微量氢气浓度连续监测、�/p><p><br/></p><p>主要特点：仪器采用新型微量氢检测器</p><p>全中文操作菜協�/p><p>仪器采用大屏幕ＬＣＤ显示屎�/p><p>实时时钟显示</p><p>可联接打印机，实现定时自动打�?/p><p>具有定时自动存储功能、可随时查看存储数据&</p><p>具有无纸记录仪功能，自动记录氢浓度随时间的变化曲纾�</p><p>具有RS232通讯口，可连接计算机，实现实时数据传输，数据存储、曲线趋势图、打印报表等功能</p><p>可设置上、下限报警点、具有报警接点输凹� 可选择输出电流�?-10mA;�?-20mA;</p><p><br/></p><p>主要技术指栆�</p><p>测量范围�?~500ppm�?~2000ppm�?~5000ppm（任选一档）</p><p>精度�?%FS</p><p>响应时间：T90小于40科�/p><p>输出信号�?�?0mA�?�?0mA</p><p>电源�?20VAC+/-10%�?0HZ+/-1HZ</p><p>环境温度�?�?0ℂ�/p><p>样气流量�?00�?00毫升／分</p><p>进气温度�?�?0ℂ�/p><p>报警继电器开关输出：265VAC/1A</p><p>外型尺寸�?44×144×250mm</p><p>开孔尺寸：138×138mm</p><p>仪器重量�?.0kg</p><p><br/></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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