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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><span style="font-size: 16px;">RA71采用调频连续波（24.2�?5.2GHz）雷达物位计，用于连续测�?00m以内的固体物料，凭借极高的信躁比指标和先进的回波处理技术，非常适合于极度粉尘环境、�br/>基本原理：采用压控振荡器的设计原理，内部电路产生基频频率�?4GHz，频宽为1GHz的严格线性增加的雷达波，通过末端天线发射，完成一次线性扫描，当接触到被测介质时，信号就会反射回来，又被同一天线接收，基于快速FFT变换的技术原理，将时域中不同频率的信号之间的频率差与到介质表面的距离成正比，进一步计算出天线到被测物体界面的距离、�br/>产品特点９�br/>� 100m的测量范围，特别适用于粉尘较大、工况较为恶劣的场合：�br/>� 信噪比极高，抗干扰能力强：�br/>� 采用高频的双核处理技术，使得回波信号处理更加快捷、更加可靠、�br/>应用范例９�br/>� 适用于各种化工原料、石灰石、煤炭、水泥、谷物、氧化铝等场合；<br/>� 应用于电力、冶金、化工、水泥、食品、轻工等行业、�/span></p><p><span style="font-size: 16px;">技术参数：<br/>操作模式 测量原理 连续调频微波物位测量技�?br/>工作频率 K波段�?4.2�?5.2GHz（�br/>*小距� 0.35m<br/>**测量距离 100m<br/>输出和供� 模拟量输� 4�?0mA/HART(0.02mA精度)<br/>负载**600Ω<br/>数字量输� 继电器，常开或常�?br/>容量�?0VDC/200mA,5W<br/>失效保安信号 可编程设置为高位、低位或保持<br/>供电电压 220VAC（四线制（�br/>性能 **测量误差 25mm�?.25%FS（取较大者）<br/>工作条件 环境温度 -40�?65ℂ�br/>过程温度 -40�?200ℂ�br/>过程压力 0.5bar<br/>介质介电常数 εr�?.4（取决于天线结构和尺寸以及工况）<br/>设计参数 外壳材质 铝合釐�br/>电气接口 M20×1.5 � 1/2"NPT<br/>防护等级 IP67<br/>显示 LCD数字/字母显示�?br/>天线材质 304SS,316SS<br/>喇叭天线开口尺� 3"喇叭φ74mm<br/>4"喇叭φ91mm<br/>过程连接 法兰：DN80,DN100,DN150<br/>附件 编程� 红外手持编程�?/span></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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