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id="pro_baseinfo"> <ul> <li><strong>产品名称：</strong>WRN-431K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=4418"></script></li> <li><strong>添加时间：</strong>2026-02-06 10:16:17</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>WRN-431</strong>是装配式热电偶系列中的标准型号，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。K型热电偶是目前工业应用***广泛的廉金属热电偶类型。</p><hr/><h2>二、与WRM-431G的核心区别对比</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><strong>WRN-431（K型）</strong></p></th><th><p><strong>WRM-431G（N型）</strong></p></th></tr></thead><tbody><tr><td><p><strong>分度号</strong></p></td><td><p>K（镍铬-镍硅）</p></td><td><p>N（镍铬硅-镍硅）</p></td></tr><tr><td><p><strong>测量范围</strong></p></td><td><p>0～1300℃（标准）</p></td><td><p>0～800℃（标准）</p></td></tr><tr><td><p><strong>热电动势</strong></p></td><td><p>较大（约41μV/℃）</p></td><td><p>较小（约39μV/℃）</p></td></tr><tr><td><p><strong>抗氧化性</strong></p></td><td><p>较好（但低于N型）</p></td><td><p><strong>更优</strong>（抗高温氧化）</p></td></tr><tr><td><p><strong>高温稳定性</strong></p></td><td><p>800℃以上易漂移</p></td><td><p>1200℃以下更稳定</p></td></tr><tr><td><p><strong>成本</strong></p></td><td><p>相对较低</p></td><td><p>略高（材料成本）</p></td></tr><tr><td><p><strong>应用场景</strong></p></td><td><p>常规工业测温（≤1300℃）</p></td><td><p>高温氧化环境（≤1200℃）</p></td></tr></tbody></table></div><p><strong>关键差异说明</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>分度号差异</strong>：K型（EU-2）与N型（Nicrosil-Nisil）的热电偶丝材料成分不同，导致热电特性、抗氧化性和高温稳定性存在本质区别</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>温度上限</strong>：WRN-431标准测量上限为1300℃，但实际长期使用建议不超过1200℃；WRM-431G标准为800℃，但高温型可达1000℃</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>应用侧重</strong>：K型适用于大多数常规工业场合，N型更适用于高温氧化性气氛或需要更高稳定性的场合</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>WRN-431</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>≤90秒（T0.5，标准型）</p></td></tr><tr><td><p><strong>保护管直径</strong></p></td><td><p>16mm或20mm（可选）</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）</p></td></tr><tr><td><p><strong>接线盒形式</strong></p></td><td><p>防水式（G型，IP65防护等级）</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></tbody></table></div><hr/><h2>四、型号命名规则解析</h2><p>WRN-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>4</strong>：固定法兰式安装（区别于3为活动法兰）</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（区别于2为防溅式）</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）</p><p></p></li></ul><p><strong>注意</strong>：部分厂家型号标注可能存在细微差异，但核心结构特征一致。</p><hr/><h2>五、结构特点</h2><h3>1. <strong>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>：采用镍铬-镍硅热电偶丝焊接而成，正极为镍铬合金（KP），负极为镍硅合金（KN）</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，确保电气绝缘</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（G型），防护等级IP65，内部有2个接线端子（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，法兰尺寸可根据用户需求定制</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>插入深度</strong>：通常为保护管外径的8-10倍，确保测量准确性</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p><strong>密封结构</strong>：法兰与设备连接处采用密封垫片，防止介质泄漏</p><p></p></li></ul><hr/><h2>六、工作原理</h2><p>WRN-431基于<strong>热电效应</strong>原理工作：两种不同成分的导体（镍铬和镍硅）一端焊接形成测量端（热端），另一端作为参比端（冷端）。当两端存在温差时，回路中会产生热电动势，该电动势的大小与温差成正比。通过测量热电动势，即可确定被测介质的温度。</p><p><strong>K型热电偶特性</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>热电动势约41μV/℃，灵敏度较高</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>线性度较好，在0～1300℃范围内近似线性</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>冷端温度补偿要求相对简单</p><p></p></li></ul><hr/><h2>七、应用领域</h2><p>WRN-431广泛应用于以下工业场景：</p><h3><strong>1. 电力行业</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>锅炉、汽轮机、热力管道温度监测</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>发电机组温度监控</p><p></p></li></ul><h3><strong>2. 化工行业</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>反应釜、蒸馏塔、管道介质温度测量</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>化工反应过程温度控制</p><p></p></li></ul><h3><strong>3. 冶金行业</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>高炉、加热炉、热处理设备温度控制</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>金属熔炼过程温度监测</p><p></p></li></ul><h3><strong>4. 机械制造</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>热处理炉、干燥设备温度监控</p><p></p></li><li><p><span class="ybc-li-component__dot-wp"></span><span class="ybc-li-component_content"></span></p><p>工业窑炉温度测量</p><p></p></li></ul><h3><strong>5. 其他行业</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>食品杀菌设备、水泥回转窑、玻璃熔炉等</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> <!-- 相关文章开始 --> <!-- 相关文章结束 --> <div 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