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總磷在線自動監測儀的安裝注意事項

總磷在線自動監測儀是采用中性條件下過硫酸鉀消解氧化,將試樣中的含磷物質全部氧化成正磷酸鹽,在酸性介質中,正磷酸鹽與鉬酸銨反應,在銻鹽的存在下生成磷鉬雜多酸后,立即被抗壞血酸還原,生成藍色的絡合物,通過分光光度法對其進行測量。水樣中三價鐵離子的干擾通過加入磷酸進行掩蔽。

測試前注意:

1. 不能用蒸餾水或飲料替代試劑來運行儀器,這樣有可能導致消解試管溫度過高,從而發生爆炸的危險!

2. 測試前儀器自動抽取新鮮的樣品清洗進樣管道、測量試管和消解試管,確保樣品具有代表性。

3. 儀器使用全新的活塞泵技術進樣,活塞泵并不與樣品、試劑直接接觸,進樣的體積由一光學測量系統控制。

4. 與進樣品相同,試劑(氧化劑、還原劑、顯色劑等)也通過注射泵吸入,也由光學測量系統控制吸入的體積。

5. 通過鼓泡的方式混合樣品和試劑。

6. 儀器關閉消解試管的兩端的閥門后,由加熱電阻絲將樣品和試劑的混合溶液迅速地加熱至120℃。

7. 測量系統按照儀器參數的設定值自動控制消解時間。

8. 分析儀可以使用內置的校準標準和清洗溶液按預設置的周期自動地對儀器進行校準和清洗。

總磷在線自動監測儀設計為室內使用,應放置在干燥、通風的地方,且易于控制溫度。分析儀的布線及管路連接應整齊有序,并確保儀器接地良好。分析儀周圍應留出一定的空間方便維護人員進行相關操作。

安裝注意事項:

為了保證進水管路的壓力平衡,出水口和溢水口不能接在同一個管路,否則水可能從取水口噴出來或者對管路造成損害。開啟取樣泵取水之前應先將進水管的球閥關閉,等管路充滿水之后再慢慢打開球閥使流速到合適的狀態,如果流速過小則可通過調小出水口的球閥來使得過濾器內充滿水。

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