GW-3000D 温室气体传感器（CO2）－武汉敢为科技有限公司

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class="ProBox ProBox1"> <div class="ProImg"><img src="https://img77.hbzhan.com/gxhpic_d63ef02baf/5eceadd4559dcfd2bb66ef23957b8e48515a202acca0aa1d3ceb3654c1409677edd06636eb277593.jpg"></div> <div class="ProTxt"> <div class="ProTitle">GW-3000D 温室气体传感器（CO2）</div> <div class="Protext"> GW-3000D型红外二氧化碳传感器是基于长光程多次反射池及气体滤光相关技术（GFC）调制技术研发而成，通过比较样品气体和参比气体在红外波段的吸收情况，从而根据朗伯比尔定律测量样品气中CO2的浓度。传感器内部集成完整的漂移控制和温度控制电路。 <br> 该仪器是敢为科技专门针对国家“双碳"背景下针对温室气体的背景调查而开发的一款产品，该产品兼具了指标优良价格适当的特点，适合大面积的推广应用。 </div> <dl class="xqdl"> <dd> <span>测量气体：</span> 二氧化碳 </dd> <dd> <span>测量范围：</span> 0-2000ppm </dd> <dd> <span>应用领域：</span> 环保监测 -污染源烟气监测环保监测 -大气环境监测 </dd> </dl> </div> <div class="clear"></div> </div> <div class="ProBox"> <div class="CpTitle">产品特点</div> <ul class="Cpul"> <li> <div class="box"> <h3>性能</h3> <strong>高稳定</strong><br> 光源、探测器，均经过长期老化测试。<br> <strong>长光程</strong><br> 6.4米的长光程，可以检出0.1ppm的浓度。<br> <strong>低干扰</strong><br> 定制窄带滤光片，基本杜绝了高浓度CO/CH4等气体对CO2的干扰。 </div> </li> <li> <div class="box"> <h3>漂移</h3> <strong>低温制冷</strong><br> 选用一级制冷探测器，让探测器光敏源工作在理想的10℃的环境下;<br> <strong>恒温处理</strong><br> 对传感器采取了高于环温的处理，给它一个稳定的环境，就获得了较小的零点漂移。<br> 采用了以上两项措施，可以获得比同类产品更低的漂移。 </div> </li> <li> <div class="box"> <h3>兼容性</h3> <strong>多接口汇集一身</strong><br> 为了更好的满足客户的使用场景，一个传感器我们集成了RS232-485以及4-20MA三种接口，客户可以根据需求自行选择。<br> <strong>多应用</strong><br> 可以用于便携使用的常温减重版；也可以用于在线监测的普通版。 </div> </li> </ul> </div> <div class="ProBox"> <div class="CpTitle">技术指标</div> <div class="ProTab"> <table width="100%" border="0" cellspacing="0" cellpadding="0" class="ke-zeroborder"> <tbody> <tr> <td class="td1" style="width:30%;"> 测量原理 </td> <td style="width:70%;"> 红外吸收（<span style="color:#333333;font-family:" white-space:normal;"="">NDIR</span>） </td> </tr> <tr> <td class="td1" style="width:30%;"> 测量量程 </td> <td style="width:70%;"> CO2：0-2000ppm（量程可定制） </td> </tr> <tr> <td class="td1" style="width:30%;"> 样气流量 </td> <td style="width:70%;"> 0.8L/min±10％ </td> </tr> <tr> <td class="td1" style="width:30%;"> 响应时间 </td> <td style="width:70%;"> ≤60s </td> </tr> <tr> <td class="td1" style="width:30%;"> 示值误差 </td> <td style="width:70%;"> ≤±2%F.S. </td> </tr> <tr> <td class="td1" style="width:30%;"> 漂移 </td> <td style="width:70%;"> ≤±1%F.S./24h </td> </tr> <tr> <td class="td1" style="width:30%;"> 预热时间 </td> <td style="width:70%;"> ≤60min </td> </tr> <tr> <td class="td1" style="width:30%;"> 输出接口 </td> <td style="width:70%;"> RS-232（默认）、RS-485、（4～20）mA </td> </tr> </tbody> </table> </div> <p> <br /> </p> <p> *具体量程可能会有细微偏差。 </p> <p> <span style="white-space:normal;"> *工作在温度25℃和1013mbar测试数据</span>。 </p> </div> <div class="ProBox"> <div class="CpTitle">技术原理</div> <ul class="Cpuls"> <li> <div class="box"> <div class="ImgSpan"> <span style="background-image:url(/uploadfiles/2020/09/20200920163801190.png?6ZmE5Zu+MS3mioDmnK/ljp/nkIYucG5n);"></span> </div> <h3>长光程吸收原理</h3> <div class="p">根据朗伯--比尔（Lambert-Beer）吸收定律，通过延长光流通的长度，可以改变气体吸收的强度。我们采用了多长反射池的结构，将光程做到物理尺寸的几倍甚至几十倍，来获得更高的检测灵敏度和更低的气体检测下限。</div> </div> </li> <li> <div class="box"> <div class="ImgSpan"> <span style="background-image:url(/uploadfiles/2020/11/20201119135948927.jpg?6ZmE5Zu+Mi3lhYnlrabnu5PmnoQuanBn);"></span> </div> <h3>GFC光学结构</h3> <div class="p">光源发出的红外光经GFC调制轮交替进入气体室，一路被充满CO2的气室所吸收，一路穿过不含CO2的气室，两路光分别经透镜汇聚后由探测器接收，经过处理得到吸收信号和参考信号。该结构可以抵消部分水汽以及外部电路或者温度噪声的影响，提高产品的稳定性。</div> </div> </li> <li> <div class="box"> <div class="ImgSpan"> <span style="background-image:url(/uploadfiles/2021/06/20210620191639305.png?Q08y5ZC45pS25bOwLnBuZw==);"></span> </div> <h3>二氧化碳的吸收光谱</h3> <div class="p">传感器通过检测一氧化碳的吸收峰4.26um附近的吸光度光谱来分析组分浓度。为了避免其他气体对CO2的吸收影响，我们在光学设计那里，选择更窄的吸收峰透过。最终实现了CO、CH4等气体对CO2检测干扰可以忽略的效果。</div> </div> </li> <li> <div class="box"> <div class="ImgSpan"> <span style="background-image:url(/uploadfiles/2020/09/20200920164440598.bmp?6ZmE5Zu+NC3plb/mnJ/mvILnp7suYm1w);"></span> </div> <h3>长期漂移</h3> <div class="p">经过30天24h漂移的跟踪测量，对传感器长期测量的稳定性进行考察，得到了CO传感器在零点、80%量程浓度的长期稳定性数据。传感器气室恒温40℃在室温环境下进行测量。</div> </div> </li> <li> <div class="box"> <div class="ImgSpan"> <span style="background-image:url(/uploadfiles/2020/09/20200920164532339.bmp?6ZmE5Zu+NS3ph43lpI3mgKcuYm1w);"></span> </div> <h3>重复性</h3> <div class="p">同的标气及相同的条件下进行操作，在尽量短的时间间隔内完成重复实验任务。依次通入氮气和80%的量程气，重复操作6次进行重复性实验；根据实验曲线图可以看出：零点在1-5之间，偏差为5ppm。</div> </div> </li> </ul> </div> <div class="ProBox"> <div class="CpTitle">应用领域</div> <div class="AppBox"> 该仪器适用于环境空气质量自动监测、温室气体含量测定、大气背景测量等领域，符合国家相关标准。传感器具有精度高，漂移小，交叉干扰低等特点。<br> 产品主要用于以下场合：<br> ● 空气质量检测；<br> ● 污染源监测；<br> ● 工业过程气体分析等场合。 <div class="AppImg"> </div> </div> </div> </div> </div> <div class="WZ_prev_next"> <ul> <li class="WZ_prev">上一篇：<a href="/Products-23741790.html">GW-3000D红外气体检测模块 (中低量程)</a></li> <li class="WZ_next">下一篇：<a href="/Products-23741801.html">GW-3000P 温室气体传感器（N2O）</a></li> </ul> </div> </div> <div class="Nyorder_main" id="order"> <div class="order_con"> <form method="post" name="form" id="form"> <ul> <li> <p><span>*</span> 姓名：</p> <div class="order_ipt1"><input type="text" name="yourname" id="yourname" 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GW-3000D 温室气体传感器（CO2）－武汉敢为科技有限公司