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</div><div>　　1、檢定和校準</div><div> </div><div>　?。?）計量器具必須按期送計量部門(mén)檢定，檢定合格后方可用于監測工作。</div><div> </div><div>　?。?）壓力計、流量計等至少半年自行校正一次。</div><div> </div><div>　?。?）每3個(gè)月至半年校準一次。在使用頻率較高的情況下，應增加校準次數。若發(fā)現傳感器性能明顯下降或已失效，必須及時(shí)更換傳感器，并送計量部門(mén)檢定。</div><div> </div><div>　　2、現場(chǎng)監測的質(zhì)量保證</div><div> </div><div>　?。?）測期間應有專(zhuān)人負責監督工況，污染源生產(chǎn)設備、治理設施應處于正常的運行工況。</div><div> </div><div>　?。?）應仔細清除采樣孔短接管內的積灰，再插入測量?jì)x器或采樣探頭，并嚴密堵住采樣孔周?chē)p隙以防止漏氣。</div><div> </div><div>　?。?）排氣水分含量測定時(shí)，采樣管前端應裝有顆粒物過(guò)濾器，采樣管應有加熱保溫措施。應對系統的氣密性進(jìn)行檢查。對于直徑較大的煙道，應將采樣管盡量深地插入煙道，減少采樣管外露部分，以防水汽在采樣管中冷凝，造成測定結果偏低。</div><div> </div><div>　?。?）排氣壓力測定時(shí)，皮托管的全壓孔要正對氣流方向，偏差不得超過(guò)10度。</div><div> </div><div>　　3、監測儀器設備的質(zhì)量檢驗</div><div> </div><div>　?。?）對整個(gè)采樣系統進(jìn)行氣密性檢驗。</div><div> </div><div>　?。?）空白濾筒應檢查外表有無(wú)裂紋、孔隙或破損。</div><div> </div><div>　?。?）檢查皮托管和采樣嘴，變形或損壞者不能使用。</div><div> </div><div>　?。?）氣態(tài)污染物采樣，要根據被測成分的存在狀態(tài)和特性，選擇合適的采樣管、連接管和濾料。</div><div> </div><div>　　4、顆粒物的采樣</div><div> </div><div>　?。?）采樣系統現場(chǎng)連接安裝后，應進(jìn)行氣密性檢查。</div><div> </div><div>　?。?）采樣嘴應先背向氣流方向插入管道，采樣時(shí)采樣嘴必須對準氣流方向。采樣結束，應先將采樣嘴背向氣流，迅速抽出管道。防止管道負壓將塵粒倒吸。</div> </div> <div id="j3vjtbj" class="ly_PrevNext wow fadeInUp"> <ul> <li>上一篇：<a href="/Article-3273141.html">低濃度大流量煙塵煙氣測試儀的光源選擇方法分享</a></li> <li>下一篇：<a href="/Article-3260787.html">《國家標準管理辦法》全文公布，明年3月1日起實(shí)行</a></li> </ul> </div> </div>   <div id="995ftlt" class="ly_foot wow fadeInUp"> <div id="9hnzrb9" class="ly_Ftmain w1200"> <div id="95vh5fl" class="ly_Ftcon"> <div id="r9vdnxn" class="ly_FtLeft"> <ul> <li> <div id="b9b5hrz" class="Ft_tit">關(guān)于我們</div> <a href="/aboutus.html" rel="nofollow">公司簡(jiǎn)介</a> <a href="/successcase.html" rel="nofollow">成功案例</a> </li> <li> <div id="nftj9r9" class="Ft_tit">產(chǎn)品中心</div> <a href="/ParentList-2310472.html" title="綜合采樣器">綜合采樣器</a> <a href="/ParentList-2310557.html" title="綜合校準儀">綜合校準儀</a> <a href="/ParentList-2310482.html" title="顆粒物采樣器">顆粒物采樣器</a> <a href="/ParentList-2310487.html" 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