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[讨论][灌水]热电偶和热电阻的区别

2008-8-13 22:24

 
<p class="MsoNormal"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORAtiON: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">和</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的区别</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">  </span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">与</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">均属于温度测量中的接触式测温,尽管其作用相同都是测量物体的温度,但是他们的原理与特点却不尽相同</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">  首先,介绍一下</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">是温度测量中应用最广泛的温度器件,他的主要特点就是测吻范围宽,性能比较稳定,同时结构简单,动态响应好,更能够远传</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"> 4-20mA</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">电信号,便于自动控制和集中控制。</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的测温原理是基于热电效应。将两种不同的导体或半导体连接成闭合回路,当两个接点处的温度不同时,回路中将产生热电势,这种现象称为热电效应,又称为塞贝克效应。闭合回路中产生的热电势有两种电势组成;温差电势和接触电势。温差电势是指同一导体的两端因温度不同而产生的电势,不同的导体具有不同的电子密度,所以他们产生的电势也不相同,而接触电势顾名思义就是指两种不同的导体相接触时,因为他们的电子密度不同所以产生一定的电子扩散,当他们达到一定的平衡后所形成的电势,接触电势的大小取决于两种不同导体的材料性质以及他们接触点的温度。目前国际上应用的</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">具有一个标准规范,国际上规定</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">分为八个不同的分度,分别为</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">B</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">R</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">S</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">K</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">N</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">E</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">J</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">和</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">T</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,其测量温度的最低可测<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv w:st="on" unitname="摄氏度" sourcevalue="270" hasspace="False" negative="True" numbertype="1" tcsc="0">零下<span lang="EN-US" style="FONT-FAMILY: 'Times New="New"  Roman'">270</span>摄氏度</st1:chmetcnv>,最高可达</span><st1:chmetcnv w:st="on" unitname="摄氏度" sourcevalue="1800" hasspace="False" negative="False" numbertype="1" tcsc="0"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">1800</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">摄氏度</span></st1:chmetcnv><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,其中</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">B</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">R</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">S</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">属于铂系列的</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,由于铂属于贵重金属,所以他们又被称为贵金属</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">而剩下的几个则称为廉价金属</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">。</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的结构有两种,普通型和铠装型。普通性</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">一般由热电极,绝缘管,保护套管和接线盒等部分组成,而铠装型</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">则是将</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">丝,绝缘材料和金属保护套管三者组合装配后,经过拉伸加工而成的一种坚实的组合体。但是</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的电信号却需要一种特殊的导线来进行传递,这种导线我们称为补偿导线。不同的</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">需要不同的补偿导线,其主要作用就是与</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">连接,使</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的参比端远离电源,从而使参比端温度稳定。补偿导线又分为补偿型和延长型两种,延长导线的化学成分与被补偿的</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">相同,但是实际中,延长型的导线也并不是用和</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">相同材质的金属,一般采用和</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">具有相同电子密度的导线代替。补偿导线的与</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的连线一般都是很明了,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的正极连接补偿导线的红色线,而负极则连接剩下的颜色。一般的补偿导线的材质大部分都采用铜镍合金。</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">  其次我们介绍一下</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">虽然在工业中应用也比较广泛,但是由于他的测温范围使他的应用受到了一定的限制,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的测温原理是基于导体或半导体的电阻值随着温度的变化而变化的特性。其优点也很多,也可以远传电信号,灵敏度高,稳定性强,互换性以及准确性都比较好,但是需要电源激励,不能够瞬时测量温度的变化。工业用</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">一般采用</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">pt100</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">Pt10</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">Cu50</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">Cu100</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,铂</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">的测温的范围一般为零下</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">200<st1:chmetcnv w:st="on" unitname="摄氏度" sourcevalue="800" hasspace="False" negative="True" numbertype="1" tcsc="0">-800<span lang="EN-US" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">摄氏度</span></span></st1:chmetcnv><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">,铜</span><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">为零下</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">40</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">到</span><st1:chmetcnv w:st="on" unitname="摄氏度" sourcevalue="140" hasspace="False" negative="False" numbertype="1" tcsc="0"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt">140</span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">摄氏度</span></st1:chmetcnv><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">。</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">和</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">一样的区分类型,但是他却不需要补偿导线,而且比</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a></span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">便宜。</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">来源:</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电阻</span></span></a> <a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">热电偶</span></span></a><span style="mso-spacerun: yes">&nbsp; </span><a href="http://www.bjzyhs.com/"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">温度传感器</span></span><span lang="EN-US" style="COLOR: black; TEXT-DECORATION: none; text-underline: none"><span lang="EN-US"> </span></span></a><a href="http://www.bjzyhs.com/sjswdj.asp"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">双金属温度计</span></span></a> <a href="http://www.bjzyhs.com/jlkb.asp"><span lang="EN-US" style="COLOR: black; FONT-FAMILY: 宋体; TEXT-DECORATION: none; mso-ascii-font-family: 'Times New="New"  Roman'; text-underline: none; mso-hansi-font-family: 'Times New="New"  Roman'"><span lang="EN-US">节流孔板</span></span></a> </span><span style="COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">专业服务网、</span><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 10.5pt"><o:p></o:p></span></p>

回帖(4)

chenyongxin1986

2012-5-16 23:48:57
哈哈

q51775

2012-5-19 22:07:26
哈哈    帖子挂了    重新编辑吧

永恒

2012-5-20 21:01:58
哎哟!!!!!!!!!!!!!

赵启明

2016-9-8 09:39:10
路过看见,支持一下!顶!顶!顶!

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