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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>测量水中溶解的二氧化碳（不包括HCO3-和CO32-）的量对于渔场等水产养殖的成功至关重要。至今一直被广泛使用的m-value方法仍具有一定缺点，除了非常耗时的手动分析，m-value方法不仅受到CO2的影响，同时也受到很多对PH有影响的化合物（硅酸盐、碳酸氢盐、碳酸盐等）干扰。此外，m-value方法需要取样，这也可能导致错误的产生。另一方面，直接读数的传感器需要在水中状况可控的条件下、�/p><p> AMT公司现今正与Mecklenburg/前波莫瑞州农业和渔业研究中心、渔业研究所（德国）开展浅水测量膜覆盖光学二氧化碳传感器项目、�/p><p><span><strong>测量原理９�/strong></span></p><p> 内部传感器的空间通过透氧硅膜从样品中分离出来。液体和固体无法从膜上通过。如果传感器进入样品，则内部传感器空间和样品达到一个CO2分压均衡。在传感器内部安装了一个光学传感器，它的工作原理基于单光束双波长近红外光。CO2分压测量伴随着水体温度和空气压强的测量以计算二氧化碳浓度、�/p><p><span><strong>特性：</strong></span></p><ul><li><p>直接读取数据</p></li><li><p>只检测溶解的二氧化碳</p></li><li><p>不受硅酸盐、磷酸盐、HCO3-和CO32-干扰</p></li><li><p>超强稳定性，内置参比测量</p></li></ul><p><span><strong>测量参数９�/strong></span></p><ul><li><p>测量范围�? mg/l� 5 mg/l� 8 mg/l� 12 mg/l� 30 mg/l� 50 mg/l� 80 mg/l� 170 mg/l� 340 mg/l</p></li><li><p>精度 (25��C): < 读数�?#177; 3%</p></li><li><p>非线�? < �� 1% FS</p></li><li><p>输出的温度依赖�? 0.1% FS/��C</p></li><li><p>压强依赖�? 读数�?.15% /hPa</p></li><li><p>长期稳定�? < �� 5% FS/2平�/p></li></ul><p><span><strong>物理参数９�/strong></span></p><ul><li><p>尺寸: 240 mm 长， 直径70 mm</p></li><li><p>材质: 尼龙 6</p></li><li><p>接口: Subconn MCBH4M</p></li><li><p>电源: 11-20 V DC � 18-30 V DC</p></li><li><p>耗电野�< 2.5 W</p></li></ul><ul><li><p>推荐的外部负轼� 电流输出: max. 200 Ohm; 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