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<p>在線氨氮測定儀的使用步驟及特點(diǎn)了解一下呢？</p><p>氨氮測定儀的使用步驟如下：</p><p>一、開機(jī)</p><p>連接好220V交流電壓電源線，檢查無誤后打開電源開關(guān)。測定樣品前儀器預(yù)熱半小時(shí)。</p><p>二、樣品的測量</p><p>1、將“標(biāo)定/測量撥動(dòng)開關(guān)"置于測量處，儀器顯示1(表示儀器現(xiàn)在使用的工作曲線為di1條)，按“選擇曲線"鍵，然后用鍵頭選擇所需的標(biāo)準(zhǔn)曲線序號(hào)，按“確認(rèn)"鍵確認(rèn)。</p><p>2、將裝有空白樣的比色管按方向插入比色孔，按“測試空白"鍵，顯示空白的信號(hào)值，待讀數(shù)穩(wěn)定后，按“確認(rèn)"鍵予以確認(rèn)。</p><p>3、將裝有樣品的比色管按方向插入比色孔，按“測試樣品"鍵，儀器顯示該樣品的氨氮濃度值，待讀數(shù)穩(wěn)定后，按“確認(rèn)"鍵鍵予以確認(rèn)，并保存在儀器內(nèi)。</p><p>4、重復(fù)第3步直至測定*部樣品。</p><p>三、曲線標(biāo)定</p><p>1、將氨氮測定儀“標(biāo)定/測量撥動(dòng)開關(guān)"置于測量處，儀器顯示00.00。</p><p>2、將裝有空白樣的比色管插入比色孔，按“確認(rèn)"鍵，顯示空白的信號(hào)值，待讀數(shù)穩(wěn)定后，按“確認(rèn)"鍵予以確認(rèn)，儀器自動(dòng)調(diào)零。</p><p>3、將裝有1號(hào)標(biāo)樣的比色管插入比色孔，按鍵頭鍵輸入標(biāo)樣的濃度值，然后按“確認(rèn)"鍵，顯示該標(biāo)樣的吸光值，待讀數(shù)穩(wěn)定后，按“確認(rèn)"鍵予以確認(rèn)。</p><p>4、重復(fù)第3步操作，分別標(biāo)定其余標(biāo)樣，直至全部標(biāo)樣標(biāo)定完后，按“結(jié)束標(biāo)定"鍵結(jié)束標(biāo)定，儀器自動(dòng)算出標(biāo)準(zhǔn)曲線方程并顯示r值(9.9.ⅹ.ⅹ表示r值為0.99ⅹⅹ)。輸入該曲線序號(hào)(I=1-5)，按“確認(rèn)"鍵保存該曲線于儀器內(nèi)。</p><p>注：一般情況下，標(biāo)準(zhǔn)曲線的相關(guān)系數(shù)r值應(yīng)在0.990以上，如果所標(biāo)定的標(biāo)準(zhǔn)曲線的r值低于0.990，說明標(biāo)準(zhǔn)配制有問題或比色操作不規(guī)范，應(yīng)仔細(xì)分析，逐一排除。</p><p>四、查詢曲線</p><p>氨氮測定儀可貯存5條工作曲線，工作曲線方程：C=K×A+b。按“查詢曲線"鍵，用鍵頭鍵輸入要查詢曲線的序號(hào)，儀器先顯示該曲線的K值(K為斜率，其值在1.0～9999.9之間)，按“確認(rèn)"鍵，顯示b值為正值或負(fù)值，按“確認(rèn)"鍵，顯示b值(b為截矩，其值在–999.9～999.9之間)，再按“確認(rèn)"鍵，顯示r值(r為相關(guān)系數(shù)，其值在0～1之間)。</p><p>優(yōu)點(diǎn)</p><p>1.氨氮測定儀采用標(biāo)準(zhǔn)：水楊酸比色法完成水質(zhì)氨氮測量，采用標(biāo)準(zhǔn)所規(guī)范的二氯異三氰酸鈉，取代常用次氯酸鈉，使試劑溶液含氯穩(wěn)定性和有效性大大增強(qiáng)（B型）。</p><p>2.氨氮測定儀可進(jìn)行標(biāo)準(zhǔn)比色曲線的制作、貯存，并或根據(jù)不同水體對(duì)象進(jìn)行水質(zhì)氨氮比色曲線調(diào)整。</p><p>3.氨氮測定儀采用*光路比色系統(tǒng)，使儀器可靠、穩(wěn)定性有較大的提高。</p><p>4.*的樣品處理方式，在分析結(jié)果準(zhǔn)確的前提下，縮短分析時(shí)間（B型）。 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