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<script src="/template/lanyuyb/skin/js/products_pic/jqzoom.pack.1.0.1.js" type="text/javascript"></script> <script src="/template/lanyuyb/skin/js/products_pic/jquery.jcarousel.pack.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="/template/lanyuyb/skin/js/products_pic/jquery.jcarousel.css" /> <link rel="stylesheet" type="text/css" href="/template/lanyuyb/skin/js/products_pic/skin.css" /> <link rel="stylesheet" type="text/css" href="/template/lanyuyb/skin/js/products_pic/jqzoom.css" /> <style type = "text/css"> #pro_view {margin:12px;} #pro_infor {} .big_pic { float:left; width:48%; overflow:hidden; text-align:center; display:block; position:relative; line-height:1em; } #image_box { margin:0 auto; /*非IE的主流浏览器识别的垂直居中的方法*/ display: table-cell; vertical-align:middle; /*设置水平居中*/ text-align:center; /* 针对IE的Hack */ *display: block; *font-size: 139px;/*约为高度的0.873，200*0.873 约为175*/ *font-family:Arial;/*防止非utf-8引起的hack失效问题，如gbk编码*/ padding:5px; border:1px solid 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onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142357.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771198133360.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771198133360.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142408.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771198136919.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771198136919.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142422.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771198135625.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771198135625.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142426.jpg" id="current_img"></a> </div><div class="blank10"></div> </div> <!-- 右侧说明 --> <div id="pro_baseinfo"> <ul> <li><strong>产品名称：</strong>LDTF-3172/GV</li> <li><strong>添加时间：</strong>2023-02-23 10:35:40</li> <li><strong>推荐度：</strong><img src="/images/admin/star2.gif" border="0" /><img src="/images/admin/star2.gif" border="0" /><img src="/images/admin/star2.gif" border="0" /><img src="/images/admin/star2.gif" border="0" /><img src="/images/admin/star2.gif" border="0" /></li> <br/> <li></li> </ul> </div> </div> </div> <div class="blank30"></div> <div class="p_info">介绍：</div> <div class="blank30"></div> <!-- 内容说明 --> <p><span style="font-size:15px;font-family:宋体">本产品是以单片微型计算机为核心、大规模集成电路为外围部件组成的高精度测控仪表，软、硬件采用多种抗干扰技术，采用</span><span style="font-size:15px">EEPROM</span><span style="font-size:15px;font-family:宋体">存储现场的工作数据，具有停、掉电数据不丢失，使用可靠性高的特点。</span></p><p><span style="font-size:15px;font-family:宋体">功能简介</span><span style="font-size:15px">:</span><span style="font-size:15px;font-family:宋体">显示测量值设定控制值及输出控制方式可自由设定显示量程及小数点位数测量值变送输出</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">自由设定变送输出量程范围</span><span style="font-size:15px">(</span><span style="font-size:15px;font-family: 宋体">可选功能</span><span style="font-size: 15px">)</span><span style="font-size:15px;font-family:宋体">通过输入被测液体密度值实现不同液体液位的测量（可选功能）</span></p><p><span style="font-size:15px;font-family:宋体">技术指标</span><span style="font-size:15px">:</span><span style="font-size:15px;font-family:宋体">开口尺寸</span><span style="font-size:15px">:76*152;152*76;92*92;68*68;92*44</span><span style="font-size:15px;font-family:宋体">共</span><span style="font-size:15px">5</span><span style="font-size:15px;font-family:宋体">种输入信号</span><span style="font-size:15px">:</span><span style="font-size:15px;font-family: 宋体">线性电流信号或线性电压信号精度等级</span><span style="font-size:15px">:0.5</span><span style="font-size:15px;font-family: 宋体">级采样速度</span><span style="font-size:15px">:3</span><span style="font-size:15px;font-family: 宋体">次</span><span style="font-size: 15px">/</span><span style="font-size:15px;font-family:宋体">秒电源电压</span><span style="font-size:15px">:AC220V-10%--AC220V+10% </span><span style="font-size:15px;font-family:宋体">消耗功率</span><span style="font-size:15px">:<=9W</span><span style="font-size:15px;font-family:宋体">继电器触电容量</span><span style="font-size:15px">:3A/220V(</span><span style="font-size:15px;font-family:宋体">无感性负载</span><span style="font-size:15px">) </span><span style="font-size:15px;font-family:宋体">名词解释</span><span style="font-size:15px">:</span></p><p><strong><span style="font-size:15px;font-family:宋体">二位式调节表</span></strong><span style="font-size:15px">(</span><span style="font-size:15px;font-family:宋体">上限调节并带回差</span><span style="font-size:15px">):</span><span style="font-size:15px;font-family: 宋体">仪表内只有一个上限继电器</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">当测量值高于设定值</span></p><p><span style="font-size:15px;font-family:宋体">加</span><span style="font-size:15px">P(P</span><span style="font-size:15px;font-family:宋体">为上限回差值</span><span style="font-size:15px">;</span><span style="font-size:15px;font-family: 宋体">后同</span><span style="font-size: 15px">)</span><span style="font-size:15px;font-family:宋体">时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">上限继电器中高通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”亮</span><span style="font-size: 15px">; </span><span style="font-size:15px;font-family:宋体">当测量值低于设定值减</span><span style="font-size:15px">P</span><span style="font-size:15px;font-family:宋体">时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">上限继电器中低通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”灭</span><span style="font-size: 15px">.</span></p><p><strong><span style="font-size:15px;font-family:宋体">三位式调节表</span></strong><span style="font-size:15px">(</span><span style="font-size:15px;font-family:宋体">上下限调节表</span><span style="font-size:15px">):</span><span style="font-size:15px;font-family: 宋体">仪表内有两个继电器</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">可分别设定上限下限两个控制点</span><span style="font-size:15px">; </span></p><p><span style="font-size:15px;font-family:宋体">当测量值高于上限设定值时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">上限继电器中高通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”亮</span><span style="font-size: 15px">; </span><span style="font-size:15px;font-family:宋体">当测量值低于上限设定值时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">上限继电器中低通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”灭</span><span style="font-size: 15px">. </span><span style="font-size:15px;font-family:宋体">当测量值高于下限设定值时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">下限继电器中低通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">LA</span><span style="font-size:15px;font-family: 宋体">”灭</span><span style="font-size: 15px">; </span><span style="font-size:15px;font-family:宋体">当测量值低于下限设定值时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">下限继电器中高通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">同时指示灯“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”亮</span></p><p><strong><span style="font-size:15px;font-family:宋体">范围调节表</span></strong><span style="font-size:15px">: </span><span style="font-size:15px;font-family:宋体">仪表内只有一个上限继电器</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">用此继电器可将被测量控制在设定的范围内</span><span style="font-size:15px">,</span></p><p><span style="font-size:15px;font-family:宋体">此种控制广泛用于不允许设备频繁启动的场合如控制水泵</span><span style="font-size:15px">.</span><span style="font-size:15px;font-family:宋体">控制过程如下</span><span style="font-size:15px">:</span><span style="font-size:15px;font-family: 宋体">当测量值小于下限值时上限继电器中低通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">“</span><span style="font-size: 15px">LA</span><span style="font-size:15px;font-family:宋体">”灯亮</span><span style="font-size:15px">;</span><span style="font-size:15px;font-family:宋体">当测量值大于上限值时上限继电器中高通</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">“</span><span style="font-size:15px">HA</span><span style="font-size:15px;font-family: 宋体">”灯亮</span><span style="font-size: 15px">;</span><span style="font-size:15px;font-family:宋体">当测量值在上限值与下限值之间时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">“</span><span style="font-size:15px">LA</span><span style="font-size:15px;font-family: 宋体">”“</span><span style="font-size: 15px">HA</span><span style="font-size:15px;font-family:宋体">”均灭</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">上限继电器维持原状态即</span><span style="font-size:15px">:</span><span style="font-size:15px;font-family: 宋体">当测量值由下限值向上限值变化时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family: 宋体">上限继电器维持中低通的状态</span><span style="font-size:15px">; </span><span style="font-size:15px;font-family:宋体">当测量值由上限值向下限值变化时</span><span style="font-size:15px">,</span><span style="font-size:15px;font-family:宋体">上限继电器维持中高通的状态</span><span style="font-size:15px">.</span></p><p><br/></p> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a 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