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class="NyNewsdetail_tips">更新時(shí)間：2021-04-16 點(diǎn)擊次數：925</div> <div id="bd8lmiie" class="NyNewsdetail_con"> <div>　　<strong>林格曼黑度計是通過(guò)林格曼煙氣黑度圖法來(lái)測定固定污染源排放煙氣黑度的設備，是隨著(zhù)科學(xué)技術(shù)水平的提高，應運而生的煙氣林格曼黑度分析系統。</strong><br /> </div><div>　　本儀器采用雙目棱鏡望遠系統，而在望遠鏡分劃板上制有相應干林格曼煙氣濃度圖1-5級的灰度階梯塊，全透明部分則為0級、觀(guān)測者通過(guò)望遠鏡左側目鏡將煙塵目標與該級灰度階梯塊比較，從而測定煙氣黑度標準等級。<br /> </div><div>　　下面讓我們一起來(lái)了解一下林格曼黑度計的使用及保養方法吧<br /> </div><div>　　從皮袋中取出儀器，脫氣目鏡蓋和物鏡蓋，然后將儀器對準被監測的煙囪口，調節望遠鏡，使煙囪口冒出的黑煙清晰，即可進(jìn)行比較測定。測定時(shí)應注意以下幾點(diǎn):<br /> </div><div>　　觀(guān)測時(shí)的照明光(即太陽(yáng)的直射光或來(lái)自天空的照射光)應為側光，與視線(xiàn)近似地成直角應避免正面光及背光<br /> </div><div>　　在陰霧情況下，由于天空背景較暗，讀數時(shí)應記取稍偏低的級別<br /> </div><div>　　煙囪出口背景上不要有山、樹(shù)和建筑物之類(lèi)暗黑的障礙物<br /> </div><div>　　觀(guān)察時(shí)應代表鍋爐正常運轉狀態(tài)，要求鍋爐負荷保持在額定負荷的80%以上，此時(shí)不得向煤中加水，不得過(guò)量鼓風(fēng)衡釋<br /> </div><div>　　觀(guān)測不能一次為準，每次間隔可掌握在0.1-1分鐘之間，依次記錄數據(每次觀(guān)測瞬時(shí)黑度)，如煙塵黑度處于二級之間，可估計到 1/2 級黑度值，最后將測得的值取平均值，即為該煙塵的黑度<br /> </div><div>　　保養<br /> 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