尘毒两用采样�?参数-价格-中国粉体罐�/title>

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} }); function showliuyan(me, showtype){ if(showtype==0){ //$("#Content").val($("#Content").attr('placeholder')); Content= document.getElementById('PopMsgFrom').Content.getAttribute('placeholder'); document.getElementById('PopMsgFrom').Content.value=Content; } if(showtype==1){ // $("#Content").val($(me).text()); alert($(me).text()); document.getElementById('PopMsgFrom').Content.value=$(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"> <strong>仪器简介：</strong></p><p><p>CDS－B垊�strong>尘毒两用采样�?/strong>，它是对空气中粉尘和有害气体同时采样的仪器。适用于环境监测、卫生防疫、职业病预防、工矿有害气体采集、居室环境测定、大专院校教学、研究等单位对空气中各种有害气体及粉尘的采集。该仪器是由两只抽吸泵单独完成作业。可同时采集粉尘和有害气体。具有液晶显示、菜单操作、电脑计时、体积小、重量轻、操作方便、计时准确、抽气负压大、调节阀采用针形阀机械调节、调节刻度细、稳定性好等优点。自投放市场以来，深受用户青睐、�/p></p><p><strong>技术参数：</strong></p><p><p>二、功� </p><p> 2.1 任意设定同一采样时间或两路不同采样时� </p><p> 2.2 采样结束提示� </p><p> 2.3 显示电池电量、电压和充电全过程� </p><p> 2.4 采样中途追加采样时间� </p><p> 三、技术参� </p><p> 3.1 电源：AC220V��10V 50HZ或DC9V�?节镍镉或镍氢充电电池� </p><p> 3.2 流量范围�?�?.5L/min（毒）；5�?0L/min（尘� </p><p> 3.3 抽气负压�?3500Pa【即180mm（Hg）】（毒）�?5000Pa（尘� </p><p> 3.4 流量准确度：��2.5� </p><p> 3.5 定时精度�?#177;0.01� </p><p> 3.6 稳定性：�?� </p><p> 3.7 工作噪音９�80db </p><p> 3.8 环境温度：－5�?0� </p><p> 3.9 充电电流�?00mA </p><p> 3.10 断续工作和连续：4�?小时工作 </p><p> 3.11 外形尺寸�?20��135��150mm </p><p> 3.12 仪器重量�?.9Kg </p><p> 四、工作原� </p><p> CDS－B垊�strong>尘毒两用采样�?/strong>由过滤器、调节阀、流量计、抽气泵、显示器、电子控制电路、单片机组成。该仪器由两只抽气泵分别组成独立的气路系统采样，相互之间不联通，两个气路各采集一种样品。时间由0.01�?9.59小时任意设定� </p><p> 该仪器由8�?号镍镉电池供电，当电池欠压时应给电池充电，界面上的电池图标会不停地闪烁，等电池充电完毕，就会停止闪烁，进入涓流充电状态，充电时间�?2小时左右。如果仪器长时间不用，每两个月给仪器维护性充电一次，以保证充电电池不损伤。如使用交流电时请将专用插头线插在仪器背面外部电源插口，仪器内部直流自动切换交流供电� </p><p> 测定粉尘浓度，用已知质量纤维滤膜装在采样器的采样头内，采集含有粉尘的空气，再由采样后滤膜的增量，计算出单位体积空气中粉尘的浓度。公式如下： </p><p> R= [(m2-m1 )/Q��t] �� 100％（mg/m3� </p><p> 式中� R－——总粉尘浓度（mg/m3� </p><p> m2 ―――采样后滤膜的质量（mg� </p><p> m1 ―――采样前滤膜的质量（mg� </p><p> Q ――采样时流量（L/min� </p><p> D t ――采样时间（min（�/p></p><p><strong>主要特点９�/strong></p><p><p>CDS－B垊�strong>尘毒两用采样�?/strong>，它是对空气中粉尘和有害气体同时采样的仪器。适用于环境监测、卫生防疫、职业病预防、工矿有害气体采集、居室环境测定、大专院校教学、研究等单位对空气中各种有害气体及粉尘的采集。该仪器是由两只抽吸泵单独完成作业。可同时采集粉尘和有害气体。具有液晶显示、菜单操作、电脑计时、体积小、重量轻、操作方便、计时准确、抽气负压大、调节阀采用针形阀机械调节、调节刻度细、稳定性好等优点。自投放市场以来，深受用户青睐、�/p> </div>  <div class="cxd"> <div class="cxd_tit"><span></span>创新炸�/div> <p style=" color: #333; 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