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center;"><strong>煙氣濃度監(jiān)測儀、林格曼黑度計(jì)、煙氣黑度檢測儀</strong></p><p><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">一、用途</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">林格曼濃煙望遠(yuǎn)鏡、林格曼黑度計(jì)是供環(huán)保部門及工礦企業(yè)對(duì)環(huán)境污染和能源節(jié)約進(jìn)行監(jiān)的儀器。</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">本儀器將煙塵的監(jiān)測由林格曼煙氣濃度圖日測法轉(zhuǎn)化通過高質(zhì)量的棱鏡望遠(yuǎn)鏡遠(yuǎn)距離測定，因此具有體積小，視場大，測距遠(yuǎn)，速度快，精度高和攜帶方便，容易掌握等一系列優(yōu)點(diǎn)，是一種監(jiān)測煙塵黑度的理想儀器。</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">二、主要參數(shù)</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">望遠(yuǎn)鏡放大倍率10×</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">望遠(yuǎn)鏡物鏡口徑50mm</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">林格曼黑度等級(jí)0級(jí)、1級(jí)、2級(jí)、3級(jí)、4級(jí)、5級(jí)目視觀測誤差不大于0.5級(jí)三、結(jié)構(gòu)原理</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px"> 本儀器采用雙目棱鏡望遠(yuǎn)系統(tǒng)，而在望遠(yuǎn)鏡分劃板上制有相應(yīng)干林格曼煙氣濃度圖1-5級(jí)的灰度階梯塊，全透明部分則為0級(jí)、觀測者通過望遠(yuǎn)鏡左側(cè)目鏡將煙塵目標(biāo)與該級(jí)灰度階梯塊比較，從而測定煙氣黑度標(biāo)準(zhǔn)等級(jí)。</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">四、使用方法</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px"> 從皮袋中取出儀器，脫氣目鏡蓋和物鏡蓋，然后將儀器對(duì)準(zhǔn)被監(jiān)測的煙囪口，調(diào)節(jié)望遠(yuǎn)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(yīng)注意以下幾點(diǎn)：</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px"> 觀測時(shí)的照明光（即太陽的直射光或來自天空的照射光）應(yīng)為側(cè)光，與視線近似地成直角應(yīng)避免正面光及背光在陰霧情況下，由于天空背景較暗，讀數(shù)時(shí)應(yīng)記取稍偏低的級(jí)別，煙囪出口背景上不要有山、樹和建筑物之類暗黑的障礙物，觀察時(shí)應(yīng)代表鍋爐正常運(yùn)轉(zhuǎn)狀態(tài)，要求鍋爐負(fù)荷保持在額定負(fù)荷的80%以上，此時(shí)不得向煤中加水，不得過量鼓風(fēng)衡釋。觀測不能一次為準(zhǔn)，每次間隔可掌握在0.1-1分鐘之間，依次記錄數(shù)據(jù)（每次觀測瞬時(shí)黑度），如煙塵黑度處于二級(jí)之間，可估計(jì)到1/2 級(jí)黑度值，zui后將測得的值取平均值，即為該煙塵的黑度。</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px">五、保養(yǎng)</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; font-size:12px"> 儀器應(yīng)放在通風(fēng)干燥處，并遠(yuǎn)離酸堿等揮發(fā)笥或腐蝕性較強(qiáng)的化學(xué)藥品。在使用過程中，應(yīng)防止碰撞，儀器外表及花紋橡膠也應(yīng)避免接觸有機(jī)溶劑，望遠(yuǎn)鏡物鏡、目鏡等內(nèi)部零件均經(jīng)檢驗(yàn)并加以密封，不要任意拆開。鏡面如有灰塵污垢可用鏡頭刷或鏡頭紙撣去。每次用畢，須將目、物鏡蓋分別蓋好，外表擦試干凈，然后裝入袋內(nèi)。</span><br /><span style="color:rgb(0, 0, 0); font-family:sans serif,tahoma,verdana,helvetica; 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