TDLAS CO气体浓度检测模拟现场实�?参数-价格-中国粉体罐�/title>

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document.getElementById('PopMsgFrom').Content.value=$(me).text(); } $(".fxp").css("display","flex"); } function close_popwin(){ $(".fxp").css("display","none"); // 关闭虚拟电话后的留言� $(".dhxj").css("display","none"); $(".dhxjbox").css("display", "none"); $(".dhxjbox2").css("display", "none"); return false; } </script>  <div class="cpjs"> <div class="cpjs_tab"> <div class="js_cpjj" style="border-bottom: 3px solid #1479d7; color: #1479d7;">产品介绍</div> <div class="js_cxd">创新炸�/div> <div class="js_xgfa">相关方案</div> <div class="js_xgzl">相关资料</div> <div class="js_yhpl">用户评论</div> <div class="js_gsdt">公司动�?/div> <div class="js_wsj">问商宵�/div> </div> <script> $(function(){ // 切换 $(".cpjs_tab a").click(function(){ $(".cpjs_tab a").css({"color":"#4F5862","border-bottom-color":"transparent"}); $(this).css({"color":"#1479d7","border-bottom-color":"#1479d7"}); }); }); </script>  <div class="cpjj"> <p><strong><span>TDLAS CO<span>气体浓度检浊�/span></strong><strong><span>模拟现场实验</span></strong><strong><span>–�span>2017</span><span>平�/span><span>6</span><span>朇�/span><span>7</span><span>�?/span></strong></p><p><strong><span>产品特点以及应用</span></strong></p><p><strong><span>TDLAS技术介绍：</span></strong><strong></strong><span>TDLAS� Tunable Diode Laser Absorption Spectroscopy 的简称，中文翻译为可调谐半导体激光吸收光谱。可调谐二极管激光吸收光�?TDLAS)技术是利用二极管激光器波长调谐特性，获得被测气体的特征吸收光谱范围内的吸收光谱，从而对污染气体进行定性或者定量分析、�/span></p><p><strong><span>TDLAS与传统测量方法性能对比９�/span></strong></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>*指标</span></p></td><td><p><span>激光气体分析仪</span></p></td><td><p><span>传统光谱在线分析仪（如质谱仪、红外仪器等（�/span></p></td></tr><tr><td><p><span>预处理系绞�/span></p></td><td><p><span>不需要（简单的（�/span></p></td><td><p><span>必需</span></p></td></tr><tr><td><p><span>*测量方法</span></p></td><td><p><span>现场、连续、实时测野�/span></p></td><td><p><span>采样预处理后间断测量</span></p></td></tr><tr><td><p><span>气体环境</span></p></td><td><p><span>高温、高粉尘、高水分、高流速、强腐蚀等、恶劣环境适应能力弹�/span></p></td><td><p><span>只能测量恒温、恒压、恒流、干燥及无粉尘的</span></p><p><span>气体</span></p></td></tr><tr><td><p><span>*响应速度</span></p></td><td><p><span>快：仅取决于仪表响应时间，小� 1 科�/span></p></td><td><p><span>慢：取决于采样预处理时间、样品气传输时间</span></p><p><span>和仪表响应时间，超过 20 科�/span></p></td></tr><tr><td><p><span>准确�?/span></p></td><td><p><span>实地测量，气体信息不失真；测量值为气体线平均浓度；不受背景气体、粉尘及气体参数影响</span></p></td><td><p><span>溶解吸附泄漏导致气体信息失真；测量值为探头位置局部浓度；背景气体、粉尘及气体参数</span></p><p><span>影响测量的准确�?/span></p></td></tr><tr><td><p><span>连续�?/span></p></td><td><p><span>连续测量</span></p></td><td><p><span>间断测量：反吹时无法测量</span></p></td></tr><tr><td><p><span>可靠�?/span></p></td><td><p><span>无运动器件、可靠性高</span></p></td><td><p><span>较多运动部件，可靠性低</span></p></td></tr><tr><td><p><span>*测量参数</span></p></td><td><p><span>可同时测量气体浓度、温度、流速等参数</span></p></td><td><p><span>只能测量气体浓度</span></p></td></tr><tr><td><p><span>介质干扰</span></p></td><td><p><span>不受背景气体交叉干扰；自动修正粉尘及光学视窗污染干扰</span></p></td><td><p><span>受背景气体的交叉干扰，无法定量修正粉尘及</span></p><p><span>光学视窗污染干扰</span></p></td></tr><tr><td><p><span>*样气排放</span></p></td><td><p><span>无样气排放，安全无污柒�/span></p></td><td><p><span>有样气排放，危险有污柒�/span></p></td></tr><tr><td><p><span>标定维护</span></p></td><td><p><span>标定�?~4 �?年；</span></p><p><span>维护�?~4 �?年，自动提示</span></p></td><td><p><span>标定：一个月 2~3 次；</span></p><p><span>维护：经帷�/span></p></td></tr><tr><td><p><span>运行费用</span></p></td><td><p><span>无需备品备件：�/span></p><p><span>运行费用接近于零（仅为电费）</span></p></td><td><p><span>需要较多备品备件；</span></p><p><span>年费用一般为系统成本� 20%左右</span></p></td></tr></tbody></table><p><strong><span>测试系统包含元器件：</span></strong><strong></strong><span>TDLAS</span><span>系统控制箱（主要包括</span><span>15</span><span>67</span><span>nmDFB</span><span>碟型激光器及其驱动、锁相放大解调板），长光程气体吸收池＇�/span><span>23</span><span>m</span><span>（�/span><span>＋�/span><span>铟镓砷光电探测器，标准浓度的</span><span>CO</span><span>样气</span><span>＋�/span><span>其他所需连接器件和显示器仵�/span><span>;</span></p><p><strong><span>上位机软件参数设置：</span></strong></p><p></p><p><span>一� </span><strong><span>实验系统概述</span></strong></p><p></p><p>�?试验系统</p><p></p><p>�?发射�?/p><p></p><p>�?接收�?/p><p><span>一� </span><strong><span>实验条件</span></strong></p><p><span>气温９�/span>28<span>ℂ�/span></p><p><span>气体压力：常厊�/span></p><p><span>光程９�/span>23m</span></p><p><span>CO<span>浓度值：</span><span>1%</span><span>�?/span><span>2%</span><span>�?/span><span>3%</span><span>�?/span><span>4%</span><span>激光器扫描电流９�/span><span>70-120mA</span></p><p><span>调制频率９�/span>5000Hz</span></p><p><span>信号放大倍率９�/span>2.5</span></p><p><span>测量灵敏度：</span>100mV</span></p><p><span>信号相位差：</span>0<span>��</span></p><p><span>二． </span><strong><span>实验步骤</span></strong></p><p><span>1. </span><span>按照国�/span>1连接好实验系统，打开示波器；</span></p><p><span>2. </span><span>使用激光光纤测试笔调节光路，使得激光光束穿过吸收池后打�?/span><span>InGaAs<span>探测器中心位置；</span></p><p><span>3. </span><span>打开激光器，按�?/span>“二<span>. </span><span>实验条件”中的激光器设置进行设置，然后开启激光器：�/span></p><p><span>4. </span><span>使用微压计测定管道内流速，然后计算出需要的</span>CO<span>流量（初始工况为</span><span>1%</span><span>），调节</span><span>Alicat</span><span>流量计至相应读数</span></p><p><span>5. </span><span>调节示波器至合适位置，开始记录读数；</span></p><p><span>6. </span><span>尅�/span>Alicat<span>流量计分别按�?/span><span>2%</span><span>�?/span><span>3%</span><span>�?/span><span>4%</span><span>的浓度计算值进行设置，每次调节后等径�/span><span>30s</span><span>左右，读取示波器的电压峰值，并记录；</span></p><p><span>7. </span><span>测量完成后，关闭相应仪器：�/span></p><p><span>8. </span><span>处理数据，分析结果、�/span></p><p><span>三． </span><strong><span>实验结果</span></strong></p><p></p><p><span>�?</span>. <span>未這�/span><span>CO</span><span>是使用直接测量法测到的扫描电压信号，证明激光确实通过</span><span>23m</span><span>的吸收距离进入了探测器，且整个光路正帷�/span></p><p><span></span></p><p><span>国�/span>5. <span>通入</span><span>1%</span><span>皃�/span><span>CO</span><span>后使用直接测量法测到的电压信号，与图</span><span>4</span><span>相比可以发现存在明显皃�/span><span>CO</span><span>吸收峰，可以采集二次谐波信号</span></p><p></p><p></p><table cellspacing="0" cellpadding="2" border="1" bordercolor="#f2f2f2" width="100%"><tbody><tr><td><p><span>浓度＇�span>%</span><span>（�/span></p></td><td><p><span>二次谐波峰倻�/span></p></td></tr><tr><td><p><span>1</span></p></td><td><p><span>52</span></p></td></tr><tr><td><p><span>2</span></p></td><td><p><span>80</span></p></td></tr><tr><td><p><span>3</span></p></td><td><p><span>96</span></p></td></tr><tr><td><p><span>4</span></p></td><td><p><span>124</span></p></td></tr></tbody></table><p><span>线性拟合的结果如图</span>11<span>所礹�/span></p><p></p><p><span>国�/span>11 <span>线性拟合结枛�/span></p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; font-size: 14px; margin: 10px 0 0; line-height: 26px;"> 暂无数据� </p> </div>  <div class="xgfa"> <div class="xgfa_tit"> <div> <span></span>相关方案 </div> </div> <div class="xgfa_box" style="display: block;"><div style="padding:10px;">暂无相关方案、�/div> </div> </div> <script> $(function(){ // 切换 $(".xgfa_tit_ul li").hover(function(){ $(".xgfa_tit_ul 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