典型应用
●此COD在线监测仪可用于需要监测有机物浓度趋势的中小型污水处理厂需要监测有机物浓度趋势的中小型污水处理厂，连续监测水中的溶解性有机污染物。
●污水厂进排口水质监测，以低的运营成本给用户提供连续而稳定的测量数据。
●污水处理工艺过程中需要控制有机负荷、曝气量和营养物质之间的平衡。使用UVAS eco sc
●紫外吸收在线分析仪可以提供连续的有机物变化趋势，能够帮助操作人员实现工艺过程的优化
仪器特点
●该COD在线监测仪运行成本低运行成本低，只有密封圈和刮片为损耗部件
● UVAS 的经济型产品，价格较低
● 不锈钢材质，坚固耐用
● 集成了自动刮片清洗功能，即使在很苛刻的应用条件下，所需的维护量仍然很低，无需额外的安装和维护（例如，压缩机）
● 即插即用
工作原理
含有共轭双键或多环芳烃的有机物溶解在水中 时，对紫外光有吸收作用。因此，通过测量这些有机物对 254nm 紫外光的吸收程度，我们就可以评估水体中这些有机物污染的程度，“特别吸光系数”，即SAC254，就是用来衡量水中有机污染物总量的物理量。该COD在线监测仪由控制器和测量探头组成。测量探头工作时，需要浸没在水中，或将水抽提上来，流过狭缝。探头中光源发出的光线穿过狭缝时，其中部分光线被狭缝中流动的样品所吸收，其它的光线则透过样品，到达探头另一侧的斩光器，被一分为二，50% 的光线由样品检测器检测，另50% 的光线由参比检测器检测。此COD在线监测仪通过比较两个检测器的信号，就可以给出“特别吸光系数”，即 SAC254。
测量技术： 紫外吸收法测量（双光束技术），无需化学试剂
分辨率： 0.5 m-1或 mg/L 或 ppm
准确度： 测量值的±5%, ±10 m-1 取大者
测量光程： 1mm
量程： 5-1500 m-1
补偿波长： 550nm
响应时间： ≥5 分钟左右, 或更长时间
电缆长度： 10m, 可延长至 100m
模拟输出： 两路0/4~20mA（通过sc200）
探头压力限值 最大 0.5bar
环境样品温度 +2~+40℃
水样 PH： 4.5~9
尺寸： 约 75×323mm
重量： 约 3.3kg
检修周期： 6 个月
用户维护： 通常为 1 小时/ 月
订购指南
标准配置包括：UVAS eco sc传感器，sc200 或sc1000 控制器、传感器安装附件
LXV443.80.10002 UVAS eco sc探头,1mm 光程
LZX414.00.10000 传感器安装附件
sc200 型控制器(需单独订购)
LXV404.99.00552 标准的sc200控制器，数字探头，双通道，220V
LXV404.99.01552 sc200控制器，带有RS232/RS485 MODBUS网卡,数字探头，双通道，220V
sc1000 控制器(需单独订购)
LXV402.99.00002 sc1000 显示模块
LXV400.99.1R572 sc1000探头模块，4 个传感器，4mA 输入，4mA 输出，4 个继电器，110-230V
LXV400.99.1B572 sc1000探头模块，4 个传感器，4mA 输入，4mA 输出，4 个继电器，RS485(MODBUS)，110-230V
LXV400.99.1F572 sc1000探头模块，4 个传感器，4mA 输入，4mA 输出，4 个继电器，PROFIBUS DP，110-230V
LXV400.99.1R582 sc1000探头模块，6 个传感器，4mA 输入，4mA 输出，4 个继电器，110-230V
来源:哈希水质网站公开信息
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Controllers and Sensors 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 Controllers and Sensors.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Controllers and Sensors 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 · Controllers and Sensors 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 Controllers and Sensors.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Controllers and Sensors 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 · Controllers and Sensors 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 Controllers and Sensors.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Controllers and Sensors 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 · Controllers and Sensors 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 Controllers and Sensors.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Controllers and Sensors 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.
