用於監測殘餘氯的氯分析儀—Chloribrid®
電化學與線上 DPD 混合式
游離氯與總餘氯的測量是水處理設施中最重要的兩項檢測,若缺乏這兩項檢測,操作人員便無法保證所生產水質的安全性。
主要採用兩種技術:電化學法與 DPD(線上)法,Pi 公司均提供這兩項技術。這兩種技術各有優缺點。獲得專利的 Chloribrid® 氯分析儀將這兩種技術整合於混合式儀器中,有效消除兩者的缺點,最終形成一款操作簡便的儀器,兼具電化學法與線上 DPD 技術的所有優點。
簡而言之,Chloribrid® 氯分析儀會在可行時優先採用電化學感測器,並每小時透過 DPD 法持續驗證其測量結果是否正確。此設計可提供反應迅速的連續氯濃度測量,並約每小時透過另一種技術進行自我校驗。若兩組讀數存在顯著差異,系統將觸發警報,此時 Chloribrid® 氯分析儀將繼續採用使用者偏好的測量技術,直至能進行人工干預為止。
Chloribrid® 氯分析儀系列特別適合用於那些特別重視可靠性與易用性、不希望出現單一故障模式,且氯分析儀的堅固耐用性至關重要的場地,例如無人值守及偏遠地點。
在系統啟動階段,Chloribrid® 會透過線上 DPD 測量(每 3 分鐘一次)輸出殘餘氯濃度,直至線上 DPD 與電化學感測器之間的偏差趨於穩定為止。此時,Chloribrid® 氯分析儀將利用線上 DPD 讀數來校準電化學感測器的輸出,而 DPD 則會切換為每小時檢查一次電化學感測器(可由使用者設定)。
延長維護週期與長效 DPD 試劑
相較於線上 DPD 比色計,電化學感測器的優勢之一在於維護間隔更長(6 個月至 1 年,而非每月)。線上 DPD 監測儀需要每月維護的原因在於,其所使用的試劑不僅會耗盡,還會發生降解。
採用 Chloribrid® 後,電化學感測器 6 個月的維護間隔優勢依然存在,因為 Pi 的 DPD 試劑不會在一個月內耗盡(由於測量頻率從每 3 分鐘一次降至每 60 分鐘一次),且不會因新穎且保密的 DPD 配方而劣化——經測試,該配方即使在高溫(40°C)下,穩定性仍可維持超過 6 個月。
Chloribrid® 氯分析儀的優點包括:
- 具備自我檢測功能的氯分析儀
- 維護頻率低(最長可達 6 個月)
- 開箱即用
- 無需例行手動校準
- 具備自動校準功能
- TOTEX 值低
- 長效 DPD 試劑具有更佳的穩定性,使用壽命最長可達 6 個月
- 任何水質中殘餘氯的連續線上監測
- 二次氯化——游離氯加藥控制
- 卻塔監測與控制
- 水處理廠殘餘氯加藥控制
- 配水監測
- 巴氏消毒機投加控制
- 海水氯化控制
- 海水中的溴監測
- 食品清洗
- 氯胺化控制
Chloribrid® 氯分析儀提供游離氯或總氯兩種版本,量程分別為 0-2 ppm 或 0-5 ppm。Chloribrid® 採用具備物聯網功能的 CRIUS®4.0 控制器,該控制器可提供以下功能:
- 多感測器輸出
- 內建 PID 及其他控制功能
- 內建資料記錄功能
- 透過 MQTT 進行遠端存取
- 業界領先的感測器自動清潔選項
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|---|---|---|
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