测量方法：
1）当QL3550总有机碳检测仪用纯氧做载气时，采用UV过硫酸盐和羟基自由基相结合的氧化方法来氧化水中的有机物质，并用NDIR测量二氧化碳浓度，从而完成水中总有机碳的测定。
2）当QL3550总有机碳检测仪用仪表风做载气时，采用UV过硫酸盐氧化方法来氧化水中的有机物质，并用NDIR测量二氧化碳浓度，从而完成水中总有机碳的测定。
仪器特点：
1）QL3550总有机碳检测仪准确测量低浓度TOC，可广泛应用于电子，电力等工业行业的反渗透水、冷凝水、补给水等总有机碳的测定。
2）TOC检测仪双量程自动切换，准确度高，检测低至ppb级的TOC浓度。
3）总有机碳TOC检测仪维护量/费用低：4mm内径进样管路，自带流通池，样品无需预处理，节约预处理成本。
4）总有机碳的测定过程不使用碱性试剂，排除因二氧化碳溶入碱性试剂造成的测量干扰，并有效降低了操作人员制备药剂的难度。
5）友好的人机界面：总有机碳TOC检测仪配有高清触摸屏，数据下载和软件更新便捷，多级管理模式方便用户对仪表进行管理。
测量参数 总有机碳 (TOC) = 非挥发性有机碳NPOC
氧化方法 UV过硫酸盐和羟基自由基相结合的氧化方法 – 纯氧做载气时
UV过硫酸盐氧化方法 – 仪表风做载气时
测量方法 水样经氧化后，经NDIR测量二氧化碳浓度
进样要求 流量：≥100mL/min
颗粒粒径：≤1.5mm，软颗粒
进样压力：≤1bar
水样温度 5oC – 45oC
载气 氧气：（使用制氧机）
电源电压与频率 : 220V AC/50Hz(±10%)
氧气浓度 : >92%
压力 : >0.05MPa
氧气消耗流量：最大1.7L/min
来源压力：50~120PSIG
露点 : -20℃(去除水气与油气)
仪器气体消耗流量：最大1.7L/min
测量范围 0-100 ~ 0-2000 μgC/L
分析时间 5.5分钟(0-100 μgC/L )；7分钟(0-2000 μgC/L)
测量间隔 可调（以分钟计）
重复性 ±10 μgC/L或读数的±2% (取其大者)
准确度 ±10 μgC/L或读数的±3%(取其大者)
最低检出限 10 μgC/L
防护等级 IP44
信号传输 0/4-20 mA, 最大负载500 Ω
数字输出 Modbus/RTU RS485
继电器输出 四个继电器（24 V 2A，干接点)
电源 100 - 240V, 50/60Hz
显示屏 7英寸， 800 × 480 像素 (4:3) TFT-LCD 触摸屏
数据储存 9999笔分析数据，99笔故障信息
尺寸 1100 x 560 x 370 mm
重量 65 Kg
订购指南
主机
8653700 QL3550 在线总有机碳分析仪, 0-100ppb, 0-2000ppb
必选配件（二选一）
8663500 制氧机
9781800 减压过滤器
其他配件和备件
8653600 NDIR 二氧化碳检测器343
8662200 无压调节阀
9789900 QL3550年维护包
8654000 循环泵专用管材包
8654100 蠕动泵管材包
来源:哈希水质网站公开信息
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · HACH-ONLINE Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of HACH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable HACH-ONLINE for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · HACH-ONLINE Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of HACH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable HACH-ONLINE for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · HACH-ONLINE Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of HACH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable HACH-ONLINE for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · HACH-ONLINE Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of HACH-ONLINE.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable HACH-ONLINE for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
