工作原理：
从传感器光源组件发出的白炽光，向下进入浊度分析仪内，遇到样品中的悬浮颗粒产生散射光。传感器浸在水样中的光电检测器能够检测到与入射光束呈90°角的散射光。连续流动的水样流经气泡消除系统，该系统能脱除样品流中夹带的空气泡，使浊度分析仪不受样品流速及压力变化的影响，从而消除低量程浊度测量中最主要的干扰。
仪器特点：
● 1720E低量程浊度分析仪内置气泡消除系统，使仪器不受流速和压力的影响，有效防止干扰，重现性好。
● 1720E浊度分析仪采用USEPA（美国环保署）认证方法，数据通用性更强。
● 1720E浊度分析仪校准灵活，既可以采用0与20NTU两点校正法-推荐校正的方法；也可以通过对比做单点校准：1-40NTU范围内任选一点。
● 1720E低量程浊度仪测量单位除NTU以外，同时有多种辅助测量单位显示：FTU，TE/F，mg/L。
● 1720E浊度分析仪清洗维护非常简单；三个月校正一次。
量程： 0.0001～ 9.9999；10.000～ 99.999NTU；自动选择量程
准确度： 0 ～ 40NTU时，读数的±2%或±0.02,取大者
40 ～ 100NTU 时，读数的±5%
分辨率： 0～ 9.9999NTU: 0.0001NTU；
10.000～ 99.999NTU: 0.001NTU
重现性： 优于读数的± 1.0%或± 0.002，取大者
响应时间： 步进响应，初始响应时间1分15秒左右
信号平均： 6，30，60，90 秒左右用户可选；用户默认值为30秒左右
样品流速： 200～750mL/min
工作温度： 对于单传感器系统为 0 ～50℃，对于双传感器系统为 0 ～40℃
样品温度： 0 ～ 50℃
模拟输出： 0/4 ～ 20mA 可选。在 0 ～ 100NTU 范围内 可编程
继电器： 3 只SPDT，230VAC，5A；可设定点警报
电源要求： 100～230VAC,50/60Hz，自动选择；40VA
进水管道： 1/4" NPT 内螺纹，1/4" 压缩配件（提供）
排水管道： 1/2" NPT 内螺纹，1/2" 软管（提供）
数字通讯： MODBUS/RS485,MODBUS/RS232,LonWorks 协议，Profibus（可选）
标准方法： 标准方法2130B，USEPA 180.1，HACH方法 8195
外壳： NEMA-4X/IP66 控制器
尺寸： 浊度仪：25.4 × 30.5 ×40.6cm
备件
| 备件货号 | 仪器型号 | 中文描述 | 英文描述 |
|---|---|---|---|
| 1895000 | 1720E 低量程浊度分析仪 | 灯 | LAMP ASSY |
| 4500400 | 1720E 低量程浊度分析仪 | 光源 | LIGHT SOURCE ASSY |
| 5221500 | 1720E 低量程浊度分析仪 | 1NTU校准模块 | ICE-PIC 1NTU CVD |
| 5225000 | 1720E 低量程浊度分析仪 | 20NTU校准模块 | ICE-PIC 20NTU CVD |
| 6011000 | 1720E 低量程浊度分析仪 | 1720E | 1720E CPU To SC100 connector |
| 6012000 | 1720E 低量程浊度分析仪 | 放大板 | CKT BD ASSY |
| 6013800 | 1720E 低量程浊度分析仪 | 灯电缆 | 1720E LAMP CABLE |
订购指南
整机定货
2976800CN 带sc200 控制器的 1720E 浊度仪，探头电缆长 2 米，20NTU的STABLCAL标液
2978100CN 带sc200 控制器（单通道，220V）的 1720E 浊度仪，探头电缆长 2 米，20NTU的STABLCAL标液
2976900CN 带 sc200 控制器（双通道，24V）的1720E浊度仪，探头长度2米，20NTU的STABLCAL标液
2978200CN 带sc200控制器（单通道，24V）的1720E浊度仪，探头长度2米，20NTU的STABLCAL标液 其他通讯输出的订货号请参考sc200订货说明
单浊度探头
60101-01 1720E 浊度仪探头，探头电缆长 2 米
可选附件
57960-00 25ft.(7.6 米)延长电缆
46308-00 电源线（230VAC），带防水堵头。（注：电源线必须单独定购）
52250-00 20NTU，ICE-PIC 校验模块
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.
