總氮、硝酸鹽、亞硝酸鹽監測儀 EZ7750 Total Nitrogen, Nitrate, Nitrite Analyzer
產品編號：EZ7750.XXXXXXXX
Online, automatic monitoring of Total Nitrogen (TN) in wastewater and general water applications 線上自動監測廢污水及一般水質的總氮 (TN) 濃度
The EZ7700 Series of On-line TN Analyzers meet the needs for fast, convenient and reliable monitoring of the regulatory sum parameter Total Nitrogen in wastewater and surface water applications. 快速、簡捷、穩定可靠監測
Ammonia, nitrate and nitrite are three key nitrogen species that play an important role in decomposition of organic material in water and biological water treatment in particular. While data on individual levels of these provide operators of WWTP’s insight in the biochemical processes, other organic and inorganic forms of nitrogen may also be of significance. Total Kjeldahl Nitrogen (TKN) was originally developed as a measure of organic nitrogen but in practice it was often considered as synonymous with Total Nitrogen (TN) due to the lack of other available technologies. Still today, TN is often confused with TKN. 氨、硝酸鹽和亞硝酸鹽對於水中有機物的分解，尤其是在生物水處理過程中發揮重要作用。
The EZ7700 Series of On-line TN Analyzers were developed in the framework of a research project to provide operators and utilities a viable alternative for the complex and time-consuming TKN method. TN as measured by the EZ7700 comprises all components, organic and inorganic, of the nitrogen cycle by the analyzer’s proprietary sample digestion technique, now available in an industrial mainframe with a compact footprint
EZ7700 系列線上總氮分析儀的開發設計為操作人員和水務公司提供可行方案以取代複雜且耗時的 TKN 方法。 EZ7700 分析儀測定的總氮 (TN) 濃度涵蓋氮循環中的所有有機和無機成分，分析儀專門特有的水樣消解技術已整合於分析儀主機。
• Full oxidation of all nitrogen species 完全消解
• Smart automatic features 智慧自動功能
• Control and communication via industrial panel PC
• Standard 4 - 20 mA signal output with alarm processing 標準 4-20 mA 訊號輸出，附警示功能
• Communication supporting Ethernet connectivity to Modbus TCP/IP
• Multiple stream analysis 多水樣流分析
Certifications : CE compliant / UL certified
Parameter 分析參數: Total Nitrogen (TN), Nitrate, Nitrite 總氮、硝酸鹽、亞硝酸鹽
Measurement Method 量測方法 : Colorimetric measurement at 546 nm using hydrazine reduction and NEDD color solution after persulfate digestion in alkaline medium, conform with APHA 4500-N 在鹼性介質中過硫酸鹽消解後，採用肼還原法和 NEDD 顯色劑，在 546 nm 波長下進行比色測量，符合 APHA 4500-N 標準
Range 量測範圍 :
TN: 0.75 - 10 mg/L;
NO₃-N: 0.125 - 10 mg/L;
NO₂-N: 0.05 - 5 mg/L
Lower Limit of Detection (LOD) :
TN: ≤ 0.75 mg/L
NO₃-N: ≤ 0.125 mg/L
NO₂-N: ≤ 0.05 mg/L
Precision : Better than 3% full scale range for standard test solutions
Sample Flow Rate : 100 - 300 mL/min
Cycle Time : 30 min including digestion of 10 min (standard)
Calibration 校正 : Automatic, 2-point; frequency freely programmable
Automatic cleaning 自動清潔 : Yes
Number of sample streams 水樣流 : 1, 2, 4, or 8
Analog Outputs 類比輸出 : Active 4 - 20 mA max. 500 Ohm load, standard 1, max. 8 (option)
Digital Outputs 數位輸出 : Optional: Modbus (TCP/IP, RS485)
關鍵字 : 總氮分析儀、硝酸鹽分析儀、亞硝酸鹽分析儀, NO3-N analyzer, NO2-N analyzer, TN analyzer, 總氮 濃度 監測儀, 硝酸鹽 監測儀, 亞硝酸鹽 監測儀, total nitrogen sensor, Nitrate analyzer, Nitrite analyzer, nitrate sensor, nitrate sensor
The EZ7700 Series of On-line TN Analyzers meet the needs for fast, convenient and reliable monitoring of the regulatory sum parameter Total Nitrogen in wastewater and surface water applications. 快速、簡捷、穩定可靠監測
Ammonia, nitrate and nitrite are three key nitrogen species that play an important role in decomposition of organic material in water and biological water treatment in particular. While data on individual levels of these provide operators of WWTP’s insight in the biochemical processes, other organic and inorganic forms of nitrogen may also be of significance. Total Kjeldahl Nitrogen (TKN) was originally developed as a measure of organic nitrogen but in practice it was often considered as synonymous with Total Nitrogen (TN) due to the lack of other available technologies. Still today, TN is often confused with TKN. 氨、硝酸鹽和亞硝酸鹽對於水中有機物的分解，尤其是在生物水處理過程中發揮重要作用。
The EZ7700 Series of On-line TN Analyzers were developed in the framework of a research project to provide operators and utilities a viable alternative for the complex and time-consuming TKN method. TN as measured by the EZ7700 comprises all components, organic and inorganic, of the nitrogen cycle by the analyzer’s proprietary sample digestion technique, now available in an industrial mainframe with a compact footprint
EZ7700 系列線上總氮分析儀的開發設計為操作人員和水務公司提供可行方案以取代複雜且耗時的 TKN 方法。 EZ7700 分析儀測定的總氮 (TN) 濃度涵蓋氮循環中的所有有機和無機成分，分析儀專門特有的水樣消解技術已整合於分析儀主機。
• Full oxidation of all nitrogen species 完全消解
• Smart automatic features 智慧自動功能
• Control and communication via industrial panel PC
• Standard 4 - 20 mA signal output with alarm processing 標準 4-20 mA 訊號輸出，附警示功能
• Communication supporting Ethernet connectivity to Modbus TCP/IP
• Multiple stream analysis 多水樣流分析
Certifications : CE compliant / UL certified
Parameter 分析參數: Total Nitrogen (TN), Nitrate, Nitrite 總氮、硝酸鹽、亞硝酸鹽
Measurement Method 量測方法 : Colorimetric measurement at 546 nm using hydrazine reduction and NEDD color solution after persulfate digestion in alkaline medium, conform with APHA 4500-N 在鹼性介質中過硫酸鹽消解後，採用肼還原法和 NEDD 顯色劑，在 546 nm 波長下進行比色測量，符合 APHA 4500-N 標準
Range 量測範圍 :
TN: 0.75 - 10 mg/L;
NO₃-N: 0.125 - 10 mg/L;
NO₂-N: 0.05 - 5 mg/L
Lower Limit of Detection (LOD) :
TN: ≤ 0.75 mg/L
NO₃-N: ≤ 0.125 mg/L
NO₂-N: ≤ 0.05 mg/L
Precision : Better than 3% full scale range for standard test solutions
Sample Flow Rate : 100 - 300 mL/min
Cycle Time : 30 min including digestion of 10 min (standard)
Calibration 校正 : Automatic, 2-point; frequency freely programmable
Automatic cleaning 自動清潔 : Yes
Number of sample streams 水樣流 : 1, 2, 4, or 8
Analog Outputs 類比輸出 : Active 4 - 20 mA max. 500 Ohm load, standard 1, max. 8 (option)
Digital Outputs 數位輸出 : Optional: Modbus (TCP/IP, RS485)
關鍵字 : 總氮分析儀、硝酸鹽分析儀、亞硝酸鹽分析儀, NO3-N analyzer, NO2-N analyzer, TN analyzer, 總氮 濃度 監測儀, 硝酸鹽 監測儀, 亞硝酸鹽 監測儀, total nitrogen sensor, Nitrate analyzer, Nitrite analyzer, nitrate sensor, nitrate sensor