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<ul> <li id="xfcqosq" class="NyActive"><a href="/article.html" class="on">技术文章</a></li><div id="xfcqosq" class="clear"></div> </ul> <p><img src="/Skins/100386/images/Crumb.png" class="Crumb" />当前位置：<a href="/">首页</a><img src="/Skins/100386/images/jt9.png" class="CrumbJt" /><a href="/article.html">技术文章</a><img src="/Skins/100386/images/jt9.png" class="CrumbJt" /><span>尘埃粒子计数器测量的尘埃粒子 UCL怎么算</span></p> <div id="xfcqosq" class="clear"></div> </div> </div>   <div id="xfcqosq" class="NyNewDetail"> <div id="xfcqosq" class="NyNewDetail_Main"> <h1 class="NyNewDetail_Name">尘埃粒子计数器测量的尘埃粒子 UCL怎么算</h1> <div id="xfcqosq" class="NyNewDetail_Tips"> <span><img src="/Skins/100386/images/ico04.png" />更新时间：2017-03-10</span><span><img src="/Skins/100386/images/ico05.png" />点击次数：4444</span> </div> <div id="xfcqosq" class="NyNewDetail_Content"> <pre><span style="font-size:20px"><strong>尘埃粒子计数器测量的尘埃粒子 UCL怎么算</strong></span></pre><p><span style="font-size:10.5000pt"><span style="font-family:宋体">1、</span></span><span style="font-size:10.5000pt"><span style="font-family:宋体">采样点的平均粒子浓度 C1+C2+……Cn A = ————————— N 式中：A：某一采样点的平均粒子浓度（粒/m3） C1：某一采样点的粒子浓度（粒/m3） C2：某一采样点的采样次数（次）。 </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋体">2、</span></span><span style="font-size:10.5000pt"><span style="font-family:宋体">2、平均值的均值： A1+A2+……AL M = —————————— L 式中：M：洁净区的平均粒子浓度，即平均值的均值；（粒/m3） L：某一洁净室内的总采样点数（个）。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋体">3、</span></span><span style="font-size:10.5000pt"><span style="font-family:宋体"> 3、标准误差式中：SE：平均值均值的标准误差，（粒/m3） </span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:宋体">4、</span></span><span style="font-size:10.5000pt"><span style="font-family:宋体">4、置信上限： UCL=M+t×SE 式中：UCL：平均值均值的95%置信上限（粒/m3）； t：95%置信上限的t 分布系数（见下表）； 95%置信上限的t 分布系数采样点L 2 3 4 5 6 7 8 9 ≥9 T 6.31 2.92 2.35 2.13 2.02 1.94 1.90 1.86 注：当采样点多于9点时，不需要计算UCL</span></span></p><pre> </pre> </div> </div> </div>  </div> <div id="xfcqosq" class="NyPrevNext"> <ul> <li><i>上一条</i><a href="/Article-149612.html">尘埃粒子计数器与气溶胶发生器在检漏中的区别</a></li> <li><i>下一条</i><a href="/Article-149610.html">尘埃粒子计数器的校准方法介绍上海</a></li> </ul> </div> </div>  <footer> <div id="xfcqosq" class="w1400"> <div id="xfcqosq" class="footup"> <ul> <li> <p>产品导航</p> <a href="/ParentList-471532.html">霉菌培养箱</a> <a href="/ParentList-471531.html">光照培养箱</a> <a href="/ParentList-471530.html">多功能全自动生化培养箱</a> <a href="/ParentList-471529.html">恒温恒湿培养箱</a> </li> <li> <p>关于我们</p> <a href="/aboutus.html">公司简介</a> <a href="/honor.html">荣誉资质</a> <a href="/aboutus.html#ab02">企业文化</a> <a href="/contact.html">联系我们</a> </li> <li> <p>资讯中心</p> <a href="/news.html">新闻中心</a> <a href="/article.html">技术文章</a> <a href="/successcase.html">成功案例</a> <a href="/down.html">资料下载</a> </li> </ul> <div id="xfcqosq" class="footewm"> <div id="xfcqosq" class="ewmjpg"><img 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