上海万奉FR12A防爆流量开�?参数-价格-中国粉体罐�/title>

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}else{ $(".fixdbox").css({"display":"none"}); } $(".fixdbox_main_left div").css({"color":"#4F5862","border-bottom-color":"transparent"}); if($(this).scrollTop()>=_wsj){ $(".fixdbox_main_left div").eq(6).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_gsdt){ $(".fixdbox_main_left div").eq(5).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_yhpl){ $(".fixdbox_main_left div").eq(4).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_xgzl){ $(".fixdbox_main_left div").eq(3).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_xgfa){ $(".fixdbox_main_left div").eq(2).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_cxd){ $(".fixdbox_main_left div").eq(1).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }else if($(this).scrollTop()>=_cpjj){ $(".fixdbox_main_left div").eq(0).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); } }); function showliuyan(me, showtype){ if(showtype==0){ //$("#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 style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">工作原理９�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">FR12A型防爆流量开关是基于L.V.King热交换原理设计，前端安装一个流量传感器，与介质接触部分有两个传感器。一个测量介质温度，另一个测温并被加热，当没有介质流动时两个传感器的温度**，有介质流动时两个传感器温差变小，温差的大小只与介质流速有关，流速越大，温差越小；流速越小，温差越大，不流动时温�?*，同时与介质自身的导热性温度有关，当流速低于或高于某一设定值时，开关接通或者断开，输出模拟信号。本产品防爆标志为ExdbIICT6 Gb,符合GB3836.1、GB3836.2相关标准要求。适用于爆炸性危险环境的1区�?区，IIA 、IIB、IIC级，引燃温度组别为T1--T6组的可燃性气体或蒸气与空气形成的爆炸性混合物的场所、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">注：安装或使用该产品时，严禁带电开盖及操作、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">特点９�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">1.无机械可活动部件，耐腐蚀、稳定可靠、使用寿命长，长期运行无需特殊维护、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">2.探测探头与信号处理电路一体设计，安装调试简单方便、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">3.内置温度补偿电路，介质及环境温度对流体的流速造成的误差减�?小、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">4.优选新型电路，发热小，可靠性高、�/p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 宋体; font-size: 12px; white-space: normal; background-color: rgb(255, 255, 255);">5.本产品仅输出4...20mA信号、�/p><p><br/></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul li").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); var _index = $(this).index(); $(".xgfa_box").css("display","none"); $(".xgfa_box").eq(_index).css("display","block"); }); }); </script>  <div class="xgzl"> <div class="cxd_tit"><span></span>相关资料</div> <div class="xgzl_box"><div style="padding:10px;">暂无数据、�/div> </div> </div>  <div class="yhpl"> <div class="cxd_tit"><span></span>用户评论</div> <form id="FormComments" action="" method="post" onsubmit="return false"> <input name="SaveProComments" id="SaveProComments" type="hidden" value="yes" /> <input name="ProductID" id="ProductID" type="hidden" value="326109" /> <input name="ProQuality" id="ProQuality" type="hidden" value="10" /> <input name="ProService" id="ProService" type="hidden" value="10" /> <input name="ProUsability" id="ProUsability" type="hidden" value="10" /> <input name="ProCostperformance" id="ProCostperformance" type="hidden" value="10" /> <div class="yhpl_pf"> <div> <p>产品质量</p> <div><span id="Quality" class="stars star10"></span><span id="Quality_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>售后服务</p> <div><span id="Service" class="stars star10"></span><span id="Service_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>易用�?/p> <div><span id="Usability" class="stars star10"></span><span id="Usability_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> <div> <p>性价毓�/p> <div><span id="Costperformance" class="stars star10"></span><span id="Costperformance_Val" class="ScoreVal" curScore="10">10刅�/span></div> </div> </div> <div class="yhpl_pftit">评论内容</div> <textarea name="Comments" id="ProComments" onfocus="checklogin();" placeholder="分享产品使用经验/采购评价（不超过500字）">