微生物電法(fa)BOD檢測儀/BOD快速測定儀 型號：HHD-50A

產 品 說 明 
  
儀器簡介：HHD-50A型BOD快速測定儀是 我公司專為各類監測和實驗室人員用于測定各種水樣生化需氧量的儀器，生物化學需氧量(Biochemical Oxygen Demand, BOD)作 為上Z常用Z重要的水質有機污染指標和檢測參數之一。本產品具有測量迅速、準確等優點，于測定地表水、生活污水、工業廢水中的 BOD。
HHD-50A型BOD快速測定儀主要特點
1、原理先進: 采用微生物電法 
2、結果準確: 與五日法有較強可比性 
3、操作簡單: 微電腦控制，智能化測量 
4、測量時間短: 8分鐘完成一個樣品測定 
5、維護簡單: 只需定期更換微生物膜和輸液管 
6、水樣無需前處理，抗干擾能力強
7、安全性高，所用菌種對人體無害
8、可靠性高: 結構簡單，無易損器件，壽命長
9、打印功能: 配微型打印機，測量結果打印輸出
HHD-50A型BOD快速測定儀技術指標
測量范圍：     2—50 mg/L（Z大可測 2—5000mg/L）
重復性：       ≤ 5%
一次測樣時間： 8分鐘
進樣方式：     恒流連續進樣
緩沖溶液消耗： 5ml/min
所需樣品體積： 每測一次需50ml               
環境溫度：    （5—40）℃  
相對濕度：     ≤90%
功率：         100W
電源：         AC220V 50Hz
外部尺寸：    （560× 360× 210） mm3
重量：         16kg
HHD-50A型BOD快速測定儀執行標準
    HJ/T 86-2002《水質 生化需氧量（BOD）的測定 微生物傳感器快速測定法》
測量原理                                  
   儀 器采(cai)用微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)電(dian)(dian)法，將(jiang)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)膜(mo)緊貼在譜式(shi)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)電(dian)(dian)的(de)(de)透(tou)氧(yang)(yang)(yang)(yang)(yang)膜(mo)表面，即構成(cheng)(cheng)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)電(dian)(dian)。儀器采(cai)用流(liu)通測量(liang)(liang)方式(shi)，即樣品以流(liu)動方式(shi)通過微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)電(dian)(dian)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)膜(mo) 里含(han)有(you)(you)(you)大量(liang)(liang)好氧(yang)(yang)(yang)(yang)(yang)微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)，在有(you)(you)(you)氧(yang)(yang)(yang)(yang)(yang)和有(you)(you)(you)機物(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)環境下非常活躍，氧(yang)(yang)(yang)(yang)(yang)電(dian)(dian)的(de)(de)輸出(chu)電(dian)(dian)流(liu)與溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)的(de)(de)濃度(du)成(cheng)(cheng)正比(bi)，不含(han)有(you)(you)(you)機物(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)液體通過流(liu)通池時(shi)，透(tou)過微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)膜(mo)的(de)(de)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)幾 乎沒有(you)(you)(you)減少(shao)。當含(han)有(you)(you)(you)有(you)(you)(you)機物(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)溶(rong)(rong)液經過流(liu)通池時(shi)，微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)消(xiao)耗(hao)大量(liang)(liang)的(de)(de)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)，消(xiao)耗(hao)的(de)(de)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)與有(you)(you)(you)機物(wu)(wu)(wu)(wu)(wu)(wu)的(de)(de)濃度(du)成(cheng)(cheng)正比(bi)，于是導(dao)致透(tou)過微(wei)(wei)生(sheng)(sheng)物(wu)(wu)(wu)(wu)(wu)(wu)膜(mo)的(de)(de)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)相(xiang)應減少(shao)。溶(rong)(rong)解(jie) 氧(yang)(yang)(yang)(yang)(yang)電(dian)(dian)測出(chu)溶(rong)(rong)解(jie)氧(yang)(yang)(yang)(yang)(yang)濃度(du)的(de)(de)變(bian)化量(liang)(liang)，從而計算出(chu)BOD 值(zhi)。