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计数类仪表</a></li> <li class="two" ><a title="转速、线速、频率测量控制仪" href="/index.php?case=archive&act=list&catid=57"> └ 转速、线速、频率测量控制仪</a></li> <li class="two" ><a title="记录仪" href="/index.php?case=archive&act=list&catid=58"> └ 记录仪</a></li> <li class="two" ><a title="闪光报警仪" href="/index.php?case=archive&act=list&catid=59"> └ 闪光报警仪</a></li> <li class="two" ><a title="电力类仪表" href="/index.php?case=archive&act=list&catid=60"> └ 电力类仪表</a></li> <li class="two" ><a title="操作器类仪表" href="/index.php?case=archive&act=list&catid=61"> └ 操作器类仪表</a></li> <li class="two" ><a title="隔离器" href="/index.php?case=archive&act=list&catid=62"> └ 隔离器</a></li> <li class="two" ><a title="分析仪表" href="/index.php?case=archive&act=list&catid=63"> └ 分析仪表</a></li> <li ><a title="管件阀门" href="/index.php?case=archive&act=list&catid=32" class="menu_item1"><span class="figure mr5"></span>管件阀门</a></li> <li ><a title="配电柜" href="/index.php?case=archive&act=list&catid=47" class="menu_item1"><span class="figure mr5"></span>配电柜</a></li> <li ><a title="温度远传检测仪" href="/index.php?case=archive&act=list&catid=64" class="menu_item1"><span class="figure mr5"></span>温度远传检测仪</a></li> </ul> </div> <!--只展开当前栏目所在一级栏目下的分类--> <div class="lefttitle">联系我们</div> <div class="leftcontact"> <div class="leftcontact_list"> <div class=dianhua> 全国咨询热线：<span>0550-7316502</span> </div> 地 址：安徽省天长市工业区<br /> 电 话：0550-7316502<br /> 传 真：0550-7311002<br /> 邮 箱：lanyuyb@163.com<br /> 邮政编码：239300<br /> </div> </div> </div> </div> <div class="right"> <div class="right_t"></div> <div class="right_b"></div> <div class="title20"> <div class="mianbao"> 当前位置 : <a title="天长市蓝宇仪表成套销售有限公司【官网】" href="/">天长市蓝宇仪表成套销售有限公司【官网】</a> >><a title="产品展示" href="/index.php?case=archive&act=list&catid=12">产品展示</a> >><a title="仪器仪表" href="/index.php?case=archive&act=list&catid=45">仪器仪表</a> >><a title="调节类仪表" href="/index.php?case=archive&act=list&catid=55">调节类仪表</a> </div> <h5>调节类仪表</h5><span>TJLYB</span> </div> <div id="content" class="clear"> <div class="blank30"></div> <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 #e9e9e9; } #image_box img { display:block; width:320px;padding:0px; margin:0px auto; vertical-align:middle; } #pro_baseinfo {float:right;width:52%;} #image_list {clear:both;} #image_list li {height:54px;overflow:hidden;} #image_list img {height:50px; padding:2px;cursor:pointer;} #pro_baseinfo ul li {line-height:32px;} .p_info {height:40px;line-height:40px;padding-left:20px;background:url(/template/lanyuyb/skin/images/comment.gif) left center no-repeat;border-bottom:1px dotted #ccc;} </style> <!-- 幻灯片 --> <!-- 幻灯片 --> <div id="pro_view"> <div id="pro_infor"> <!-- 左侧产品图 --> <div class="big_pic"> <div id="image_box"> <a href="/upload/images/202302/16771307615013.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771307615013.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142458.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771307616226.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771307616226.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142451.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771307619388.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771307619388.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142501.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771307611034.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771307611034.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142505.jpg" id="current_img"></a> </div><div id="image_box"> <a href="/upload/images/202302/16771307611235.jpg" class="jqzoom" title=""><img src="/upload/images/202302/16771307611235.jpg" onerror='this.src="/images/nopic.gif"' alt="微信图片_20230221142508.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>LDTQ-3072/VA(LRZ)</li> <li><strong>添加时间：</strong>2023-02-23 13:38:10</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-family:宋体">数字温度指示调节仪是由信号转换、非线性修正、数字面板表、调节控制输出和稳压电源等部分组成。</span></p><p><span style=";font-family:宋体">当发现数字面板表显示不正常时</span>,<span style=";font-family:宋体">可用精度较高的数字万用表</span>(<span style=";font-family:宋体">直流电压档</span>)<span style=";font-family:宋体">先测试其输入端信号</span>,<span style=";font-family:宋体">若正常</span>,<span style=";font-family:宋体">则整机输入信号从零点</span>(<span style=";font-family:宋体">始点</span>)<span style=";font-family:宋体">向满量程</span>(<span style=";font-family:宋体">终点</span>)<span style=";font-family:宋体">变化时</span>,<span style=";font-family:宋体">数字面板的输入信号应是</span>0<span style=";font-family:宋体">至几十或几百毫伏变化的电压信号。如果符合要求</span>,<span style=";font-family:宋体">则说明信号转换和非线性修正部分无故障</span>,<span style=";font-family:宋体">问题出在数字面板表内部</span>,<span style=";font-family:宋体">可对数字面板表的有关元器件作进一步检查。如果查得面板表得输入信号的幅度和稳定性不正常</span>,<span style=";font-family:宋体">则说明故障发生在前两部分</span>,<span style=";font-family:宋体">即信号转换和非线性修正部分。</span></p><p><span style=";font-family:宋体">非线性修正部分正常的工作状态是</span>:<span style=";font-family:宋体">当整机输入信号从零点</span>(<span style=";font-family:宋体">始点</span>)<span style=";font-family:宋体">向满量程</span>(<span style=";font-family:宋体">终点</span>)<span style=";font-family:宋体">变化时</span>,<span style=";font-family:宋体">其相应的放大输出信号应是</span>0<span style=";font-family:宋体">至几伏的电压信号。如果正常</span>,<span style=";font-family:宋体">则说明故障发生在信号转换部分</span>;<span style=";font-family:宋体">如果不正常</span>,<span style=";font-family:宋体">可进一步检查非线性修正部分的有关元器件。例如</span>,<span style=";font-family:宋体">调整电位器和补偿二极管等。不同厂家的产品</span>,<span style=";font-family:宋体">其测量线路也各不一样</span>,<span style=";font-family:宋体">但其功能还是一样的</span>,<span style=";font-family:宋体">都是将从零点</span>(<span style=";font-family:宋体">始点</span>)<span style=";font-family:宋体">到满量程</span>(<span style=";font-family:宋体">终点</span>)<span style=";font-family:宋体">变化的整机输入信号转换成</span>0<span style=";font-family:宋体">至几十毫伏的电压信号。如果用万用表测量其输出端</span>,<span style=";font-family:宋体">应在该范围内变化</span>,<span style=";font-family:宋体">即认为信号转换部分正常</span>,<span style=";font-family:宋体">否则说明信号转换部分有问题</span>,<span style=";font-family:宋体">可进一步检查该部分的有关元器件。</span></p><p><span style=";font-family:宋体">当发现输出控制信号不正常时</span>,<span style=";font-family:宋体">可用万用表测量比较放大器输出端信号。正常情况</span>,<span style=";font-family:宋体">测量信号低于设定值时</span>,<span style=";font-family:宋体">放大器输出应为正几伏的稳定电压信号。当测量信号高于设定值</span>(<span style=";font-family:宋体">一般为满量程的</span>10%)<span style=";font-family:宋体">时</span>,<span style=";font-family:宋体">放大器输出应为负几伏的稳定电压信号。如果上述测量均正常</span>,<span style=";font-family:宋体">而输出控制信号仍不正常时</span>,<span style=";font-family:宋体">可对输出功放三极管及有关电容、二极管作进一步检查。另外</span>,<span style=";font-family:宋体">当仪表的</span>PID<span style=";font-family:宋体">参数整定不当时</span>,<span style=";font-family:宋体">也会产生输出控制信号不正常的现象。</span></p><p><br/></p> <div class="blank30"></div> <!-- tag --> <div class="blank10"></div> 标签： <a href='/index.php?case=tag&act=show&tag=LDTQ-3112+LDTQ-3152%2FV+LDTQ-3172%2FGVAM+LDTQ-3123%2FG+LDTQ-3152%2FGVD+LDTQ-3322+LDTQ-3022%2FG' target='_blank'>LDTQ-3112 LDTQ-3152/V LDTQ-3172/GVAM LDTQ-3123/G LDTQ-3152/GVD LDTQ-3322 LDTQ-3022/G</a> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <!-- 相关文章开始 --> <div class="blank30"></div> <div class="p_info">相关内容：<a href='/index.php?case=tag&act=show&tag=LDTQ-3112+LDTQ-3152%2FV+LDTQ-3172%2FGVAM+LDTQ-3123%2FG+LDTQ-3152%2FGVD+LDTQ-3322+LDTQ-3022%2FG' target='_blank'>LDTQ-3112 LDTQ-3152/V LDTQ-3172/GVAM LDTQ-3123/G LDTQ-3152/GVD LDTQ-3322 LDTQ-3022/G</a> </div> <div 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