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id="pro_baseinfo"> <ul> <li><strong>产品名称：</strong>WRN2-431双支K型固定法兰式装配热电偶</li> <li><strong>浏览：</strong><script src="/index.php?case=archive&act=view_js&aid=4419"></script></li> <li><strong>添加时间：</strong>2026-02-06 10:19:51</li> <li><strong>推荐度：</strong><img src="/images/admin/star1.gif" border="0" /><img src="/images/admin/star1.gif" border="0" /><img src="/images/admin/star1.gif" border="0" /><img src="/images/admin/star1.gif" border="0" /><img src="/images/admin/star1.gif" border="0" /></li> <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, SimSun;"></span></p><h2>一、产品概述</h2><p><strong>WRN2-431</strong>是装配式热电偶系列中的双支型号，采用固定法兰安装方式，分度号为K型（镍铬-镍硅）。产品通常与显示仪表、记录仪表或电子调节器配套使用，用于直接测量工业生产过程中0～1300℃范围内的液体、蒸汽、气体介质及固体表面温度。双支结构使其特别适用于需要<strong>冗余测量、双通道监控或数据校验</strong>的关键工艺场合。</p><hr/><h2>二、核心特征：与WRN-431的关键区别</h2><div class="hyc-common-markdown__table-wrapper" data-has-scroll="false"><table><thead><tr class="firstRow"><th><p>对比维度</p></th><th><p>WRN-431（单支）</p></th><th><p>WRN2-431（双支）</p></th></tr></thead><tbody><tr><td><p><strong>感温元件数量</strong></p></td><td><p>单支</p></td><td><p><strong>双支独立元件</strong></p></td></tr><tr><td><p><strong>信号输出</strong></p></td><td><p>单路温度信号</p></td><td><p><strong>两路独立温度信号</strong></p></td></tr><tr><td><p><strong>接线端子数</strong></p></td><td><p>2个（正负极）</p></td><td><p><strong>4个（两对正负极）</strong></p></td></tr><tr><td><p><strong>应用场景</strong></p></td><td><p>常规单点测温</p></td><td><p>冗余备份、双通道对比、主备切换</p></td></tr><tr><td><p><strong>可靠性</strong></p></td><td><p>单点失效风险</p></td><td><p><strong>单支故障不影响另一支工作</strong></p></td></tr><tr><td><p><strong>价格</strong></p></td><td><p>相对较低</p></td><td><p>约高30%-50%（因双支结构）</p></td></tr></tbody></table></div><p><strong>双支结构的核心优势</strong>：</p><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>冗余设计</strong>：一支热电偶故障时，另一支仍可正常工作，提高系统可靠性</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>数据校验</strong>：可同时监测同一测点的两个温度值，用于数据对比和异常判断</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>主备切换</strong>：可与控制系统配合实现自动切换功能</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>多点监测</strong>：部分定制型号可测量两个不同位置（需特殊设计）</p><p></p></li></ul><hr/><h2>三、主要技术参数</h2><div class="hyc-common-markdown__table-wrapper" data-has-scroll="false"><table><thead><tr class="firstRow"><th><p>参数类别</p></th><th><p>技术指标</p></th></tr></thead><tbody><tr><td><p><strong>型号标识</strong></p></td><td><p>WRN2-431（"2"表示双支）</p></td></tr><tr><td><p><strong>分度号</strong></p></td><td><p>K（镍铬-镍硅）</p></td></tr><tr><td><p><strong>测量范围</strong></p></td><td><p>0～1300℃（标准型）<br/>0～800℃（常用工作范围）</p></td></tr><tr><td><p><strong>允许偏差</strong></p></td><td><p>±2.5℃或±0.75%t（t为实测温度）</p></td></tr><tr><td><p><strong>热响应时间</strong></p></td><td><p>≤120秒（T0.5，标准型）</p></td></tr><tr><td><p><strong>保护管直径</strong></p></td><td><p>20mm（标准规格）</p></td></tr><tr><td><p><strong>保护管材质</strong></p></td><td><p>1Cr18Ni9Ti（0-800℃）<br/>0Cr25Ni20（0-1300℃）</p></td></tr><tr><td><p><strong>绝缘电阻</strong></p></td><td><p>≥100MΩ（常温）<br/>双支间绝缘电阻≥100MΩ</p></td></tr><tr><td><p><strong>接线盒形式</strong></p></td><td><p>防水式（防护等级IP65）</p></td></tr><tr><td><p><strong>安装方式</strong></p></td><td><p>固定法兰式</p></td></tr><tr><td><p><strong>公称压力</strong></p></td><td><p>2.5MPa（常温下）</p></td></tr><tr><td><p><strong>双支特性</strong></p></td><td><p>两路独立输出，互不干扰</p></td></tr></tbody></table></div><p><strong>注</strong>：双支热电偶的两支感温元件在保护管内相互绝缘，可独立工作，互不影响。</p><hr/><h2>四、型号命名规则解析</h2><p>WRN2-431型号含义：</p><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>WR</strong>：热电偶（W表示温度，R表示热）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>N</strong>：分度号K型（镍铬-镍硅）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>2</strong>：<strong>双支结构</strong>（关键标识，区别于单支）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>4</strong>：固定法兰式安装</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>3</strong>：防水式接线盒</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>1</strong>：设计序号（通常指保护管直径规格，1对应20mm）</p><p></p></li></ul><p><strong>重要提示</strong>：型号中的"2"是区分单双支的关键字符，WRN-431为单支，WRN2-431为双支，其他参数相同。部分厂家可能采用不同命名规则，但核心结构特征一致。</p><hr/><h2>五、结构特点</h2><h3>1. <strong>双支核心组件</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>感温元件</strong>：采用两套独立的镍铬-镍硅热电偶丝，分别焊接成测量端，在保护管内相互绝缘隔离</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>保护管</strong>：不锈钢材质（1Cr18Ni9Ti或0Cr25Ni20），提供机械保护和耐腐蚀性能</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>绝缘材料</strong>：高温陶瓷或氧化镁粉末填充，确保双支元件间及对地绝缘</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>接线盒</strong>：防水式设计，防护等级IP65，内部有4个接线端子（两对正负极）</p><p></p></li></ul><h3>2. <strong>安装特征</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>固定法兰</strong>：便于在管道或设备上固定安装，法兰尺寸可根据需求定制</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>双支引出线</strong>：两路信号线在接线盒内独立引出，可分别接入不同仪表或同一仪表的两个通道</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>标识区分</strong>：通常用不同颜色或编号标识两支热电偶的正负极，便于接线识别</p><p></p></li></ul><hr/><h2>六、工作原理</h2><p>WRN2-431基于<strong>热电效应</strong>原理工作，两支热电偶独立工作：</p><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>每支热电偶由两种不同成分的导体（镍铬和镍硅）组成，一端焊接形成测量端（热端），另一端作为参比端（冷端）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>当两端存在温差时，每支回路中会产生独立的热电动势，该电动势的大小与温差成正比</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>通过测量两路热电动势，即可分别确定被测介质的温度值</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>双支结构的关键在于<strong>两支元件在保护管内******绝缘隔离</strong>，互不影响</p><p></p></li></ul><hr/><h2>七、应用领域</h2><p>双支热电偶特别适用于以下工业场景：</p><h3><strong>1. 关键工艺冗余备份</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>化工反应釜、锅炉、汽轮机等关键设备温度监测</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>一支作为主测量，另一支作为备用或校验</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>单支故障时可自动切换，避免停车损失</p><p></p></li></ul><h3><strong>2. 双通道对比测量</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>需要高可靠性验证的场合（如核电站、精密化工）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>两支同时测量同一测点，通过数据对比判断测量准确性</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>发现异常时可及时报警</p><p></p></li></ul><h3><strong>3. 多点温度监测</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>部分定制型号可测量两个不同位置（需特殊设计）</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>节省安装空间和成本</p><p></p></li></ul><h3><strong>4. 典型行业应用</strong></h3><ul class="ybc-ul-component list-paddingleft-2"><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>电力行业</strong>：锅炉、汽轮机关键测点</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>化工行业</strong>：反应器、精馏塔温度监控</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>冶金行业</strong>：高炉、加热炉温度测量</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>制药行业</strong>：发酵罐、灭菌设备温度控制</p><p></p></li></ul><p><span style="font-family: 宋体, SimSun;"></span><br/></p> <div class="blank30"></div> <div class="blank30"></div> <!--自动调用自定义字段--> <div class="blank20"></div> <!-- 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