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id="ShoveWebControl_Text3">一體式激光煙道粉塵濃度檢測儀</span></h1></b> </div> <div class="gljo9fygc" id="xn_c_prodv_26_wrap" class="xn_c_prodv_26_wrap"> <div id="gljo9fygc" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="gljo9fygc" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品型號：</span></span> <span id="gljo9fygc" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">LD-5</span></span> </div> <div id="gljo9fygc" class="xn_c_prodv_26_name" style="line-height: 36px;"> <span id="gljo9fygc" class="xn_c_prodv_26_namewz"><span name="_prodv_26_namewz">產(chǎn)品時(shí)間：</span></span> <span id="gljo9fygc" class="xn_c_prodv_26_namemc"><span id="xn_c_prodv_26_Text1">2024-07-13</span></span> </div> </div> <div class="gljo9fygc" id="prod_view_ms" class="prod_view_ms"><span id="ShoveWebControl_Text7">一體式激光煙道粉塵濃度檢測儀：</br>本儀器是在LD-5H/L激光粉塵儀的基礎(chǔ)上通過加配煙道采樣桿，實(shí)現(xiàn)了對中央空調(diào)排氣口、煙道、風(fēng)洞、深井等區(qū)域粉塵濃度進(jìn)行檢測。標(biāo)準(zhǔn)配置中，采樣桿加軟管總長1.6m，也可根據(jù)客戶需要定制加長采樣桿，長不超過3m。</span></div> </div> <p></p> </dd> </dl> <div id="gljo9fygc" class="main_top3"><p>產(chǎn)品介紹</p></div> <div id="gljo9fygc" class="product1 pro_1"> <p><span style="font-size:16px"><span style="font-family:黑體"><strong>一體式激光煙道粉塵濃度檢測儀</strong>技術(shù)參數(shù)：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="color:rgb(0, 0, 0)">1、配置40mm濾膜采樣器;</span><br /><span style="color:rgb(0, 0, 0)">2、具有可更換粒子切割器PM10、PM5、PM2.5及TSP供選擇;</span><br /><span style="color:rgb(0, 0, 0)">3、直讀粉塵質(zhì)量濃度（mg/m³），1分鐘出結(jié)果，也可根據(jù)需要自行設(shè)置;</span><br /><span style="color:rgb(0, 0, 0)">4、大屏幕液晶顯示器，漢字菜單提示;</span><br /><span style="color:rgb(0, 0, 0)">5、檢測靈敏度：LD-5L 0.01mg/m³、LD-5H 0.001mg/m³;</span><br /><span style="color:rgb(0, 0, 0)">6、重復(fù)性誤差：±2％</span><br /><span style="color:rgb(0, 0, 0)">7、測量精度： ±10%</span><br /><span style="color:rgb(0, 0, 0)">8、測量范圍： LD-5L 0.01～100 mg/m³； LD-5H 0.001～10 mg/m³。</span><br /><span style="color:rgb(0, 0, 0)">9、測定時(shí)間：標(biāo)準(zhǔn)時(shí)間為1分鐘，設(shè)有0.1分及手動(dòng)檔（可任意設(shè)定采樣時(shí)間）。</span><br /><span style="color:rgb(0, 0, 0)">10、具有公共場所監(jiān)測模式、大氣環(huán)境監(jiān)測模式以及勞動(dòng)衛(wèi)生模式?？捎?jì)算出時(shí)間加權(quán)平均值（TWA）和短時(shí)間接觸允許濃度（STEL）等。</span><br /><span style="color:rgb(0, 0, 0)">11、存貯：可循環(huán)存儲999組數(shù)據(jù)。</span><br /><span style="color:rgb(0, 0, 0)">12、定時(shí)采樣（自動(dòng)連續(xù)測量模式）：可設(shè)定測量時(shí)長（1～9999）秒，間隔時(shí)間（0～9999）秒，采樣次數(shù)（1～9999次）。</span><br /><span style="color:rgb(0, 0, 0)">13、具有粉塵濃度超標(biāo)報(bào)警功能，報(bào)警濃度閾值可自行設(shè)定；測量時(shí)長（1～9999）秒可自行設(shè)定。</span><br /><span style="color:rgb(0, 0, 0)">14、輸出接口：</span><br /><span style="color:rgb(0, 0, 0)">（1）PC機(jī)通訊串行接口：RS232；</span><br /><span style="color:rgb(0, 0, 0)">（2）微型打印機(jī)輸出接口；</span><br /><span style="color:rgb(0, 0, 0)">（3）模擬量輸出接口：（0～1）V；</span><br /><span style="color:rgb(0, 0, 0)">（4) 數(shù)字量輸出接口：電平信號。</span><br /><span style="color:rgb(0, 0, 0)">15、電源：Ni-MH或鋰電充電電池組，可連續(xù)使用8小時(shí)；附220VAC/12VDC 電源適配器。</span><br /><span style="color:rgb(0, 0, 0)">16、另配具有濕度修正功能，數(shù)據(jù)更加精確（詳情參見LD-5S)</span><br /><span style="color:rgb(0, 0, 0)">17、配備300度耐高溫采樣桿及軟管，總長1.6m，可加長至3m。</span><br /><span style="color:rgb(0, 0, 0)">18、重量：2.4kg </span><br /><span style="color:rgb(0, 0, 0)">19、尺寸：195mm*85mm*132mm</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img48.chem17.com/gxhpic_d55d0c909a/4c6de04c44fd79c321677ec61f5ae3cabc1fae8d8bf95491b48a71b0cbb84824bb82af0ec916b005.jpg" style="height:800px; width:800px" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><strong>一體式激光煙道粉塵濃度檢測儀</strong>原理及結(jié)構(gòu)：</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><span style="line-height:1.6em">給暗室里的浮游粉塵照射光時(shí)，在粉塵物理性質(zhì)一定的條件下，粉塵的散射光強(qiáng)度正比于粉塵的質(zhì)量濃度。將散射光強(qiáng)度轉(zhuǎn)換成脈沖計(jì)數(shù)即可測出粉塵的相對質(zhì)量濃度，通過預(yù)置</span><span style="line-height:1.6em">K值，便</span><span style="line-height:1.6em">可</span><span style="line-height:1.6em">直接顯示</span><span style="line-height:1.6em">粉塵</span><span style="line-height:1.6em">質(zhì)量濃度mg/m³</span><span style="line-height:1.6em">。</span></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">粉塵在風(fēng)扇的吸引下進(jìn)入吸引口，經(jīng)迷宮式切割器除去粗大粒子，遮掉外部光線，進(jìn)入檢測器暗室。暗室內(nèi)的平行光與受光部的視野成直角交叉構(gòu)成靈敏區(qū)，粉塵通過靈敏區(qū)時(shí)，其90º方向散射光透過狹縫射進(jìn)光電倍增管轉(zhuǎn)換成光電流，經(jīng)光電流積分電路轉(zhuǎn)換成與散射光成正比的單位時(shí)間內(nèi)的脈沖數(shù)。因此記錄單位時(shí)間內(nèi)的脈沖數(shù)便可求出粉塵的相對質(zhì)量濃度。</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">本儀器相對質(zhì)量濃度為CPM(Count Per Minute)，即“每分鐘的脈沖計(jì)數(shù)”，質(zhì)量濃度單位是mg/m³。 </span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">為確保儀器的長期穩(wěn)定性和檢測靈敏度，在檢測器內(nèi)部裝有模擬散射光的光學(xué)系統(tǒng)（標(biāo)準(zhǔn)散射板）。用標(biāo)準(zhǔn)散射板對照檢驗(yàn)表記載的調(diào)整靈敏度數(shù)值（S），可對儀器進(jìn)行自校。</span></span></p><p style="margin-left:28.0000pt"><span style="font-size:16px"><span style="font-family:黑體">質(zhì)量濃度轉(zhuǎn)換系數(shù)K值</span></span></p><p style="margin-left:28.05pt"><span style="font-size:16px"><span style="font-family:黑體">在P-5L2C型便攜式微電腦粉塵儀的檢驗(yàn)表上記載的K值為0.01，此數(shù)值是為使同一型號儀器的靈敏度*，而用標(biāo)準(zhǔn)粒子校正后的數(shù)值，不是實(shí)際測量時(shí)的K值。</span></span></p><p style="margin-left:28.0500pt"><span style="font-size:16px"><span style="font-family:黑體">在實(shí)際應(yīng)用P-5L2C便攜式微電腦粉塵儀時(shí)，求質(zhì)量濃度轉(zhuǎn)換系數(shù)K值的方法是：在要進(jìn)行測定的場所，把濾膜采樣器和P-5L2C便攜式微電腦粉塵儀的吸引口以同一高度，同一方向放置在同一環(huán)境內(nèi)，同時(shí)（10分鐘以上）進(jìn)行采塵，根據(jù)兩種儀器取得的數(shù)值，用下式求出K值。</span></span></p><p style="margin-left:28.0500pt"><span style="font-size:16px"><span style="font-family:黑體">C</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">K=---</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> R</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體">式中：K：質(zhì)量濃度轉(zhuǎn)換系數(shù)（mg/m³.CPM）</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> C：用濾膜采樣器測出的濃度值（mg/m³）</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"> R：粉塵儀測定值（CPM）</span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img50.chem17.com/gxhpic_d55d0c909a/4c6de04c44fd79c321677ec61f5ae3ca4c8d83d96ecd9086bee25a77fc264c49f37cf429e74acefc.jpg" /></span></span></p><p><span style="font-size:16px"><span style="font-family:黑體"><img alt="" src="https://img50.chem17.com/gxhpic_d55d0c909a/1612f01f3bc0aaed4e5a966885cac426b0fff4556f43fbcaecfcb2eec5e406e4a0fc4575d8815231.jpg" style="height:513px; width:790px" /></span></span></p><p><span style="font-size:16px"><span 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