工作原理
5500 系列溶解氧传感器中插有两个金属电极并充有电解质的小室，用选择性薄膜封闭。水和可溶解物质离子不能透过这层膜，但氧和一定数量的其他气体及亲水性物质可透过，将溶解氧传感器浸入水中就可进行溶解氧的测定。因原电池作用或外加电压使电极间产生电位差使金属离子在阳极进入溶液，而透过膜的氧在阴极还原。由此所产生的电流直接与通过膜进入电解液中的溶解氧的传递速度成正比，该电流与给定温度下水样中氧的分压成正比。
典型应用
5500 系列溶解氧传感器主要用于城市污水和工业废水处理厂溶解氧的测定，典型的应用包括
曝气池、好氧/厌氧消化池、出厂水，也适用于天然水、污水和盐水等各种水体溶解氧的测定。
优势
●5500 系列溶解氧传感器可与GLI 的D63、D53、D33 及PRO-D3 溶解氧分析仪或变送器配合使用。
●5500 系列溶解氧传感器采用一体化可更换的膜头组件，更换简便快速。-由于每个组件包括一个预装的薄膜、电解液和电极，所以组件的更换将能够补充溶解氧传感器所需的所有耗材。
●5500 系列溶解氧传感器使用极谱克拉克电池技术，由三电极系统组成：金阴极、银阳极和银参考电极，对银参考电极用恒定电压进行极化以起到稳压作用，使得溶解氧的测定更加稳定、准确。
●内置自清洗系统，自清洗选项包括压缩空气清洗系统，可通过编程自动完成对传感器薄膜的清洗
浸润材料 Noryl®和316 不锈钢体，PVC 安装适配器，Viton®O 形圈，Teflon®膜、Noryl®和Ryton®组件，以及尼龙电缆夹子和溢流冒口
电极材料 金阴极、银阳极和银参考电极
温度范围 32~122℉（0~50℃）
温度补偿 NTC 30 KO 电阻
最小流速 每秒左右 0.016 英尺（0.5 cm）
最大压力 145 psi（10 bar）
测量范围 0.0~40.00 ppm
灵敏度 量程的±0.05%
重复性 量程的±0.5%
响应时间（20℃） 130 秒左右达到阶跃变化的90%
膜的厚度 2 英寸（50 微米）
传感器电缆（随附） 15 英尺（4.6 m）长的电缆，终端为MS 型快速脱卸式插头（金属或者塑料材质）
测量原理 三电极极谱克拉克电池技术
电气认证 CSA和FM认证， GLI的D53型可用于Class I,Div.2 （Groups A~D）的危险区域
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.
