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Water Quality Sensor

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NEXI-CL-406-S Residual Chlorine Sensor,Drinking water treatment/swimming pool monitoring/industrial water circulation,RS-485,IP68

Brand: Nexisense

Model: CL-406-S

Output: RS-485 (Modbus RTU), 4-20mA (optional)

Power: 12 ~ 24V DC

IP Rating: IP68

Range: 0~2.000mg/L (HClO)

Description: The Nexisense CL-406-S residual chlorine sensor is a high-performance water quality monitoring device designed for drinking water treatment, swimming pools, and industrial water circulation systems. Utilizing an advanced constant voltage measurement principle, it ensures accurate chlorine content detection and is suitable for various environmental conditions. Learn more about the Nexisense CL-406-S's technical specifications, installation methods, and maintenance requirements to improve your water quality monitoring efficiency.

Products Description

Nexisense CL-406-S Residual Chlorine Sensor Product Definition

The Nexisense CL-406-S Residual Chlorine Sensor is a high-precision instrument used for real-time monitoring of chlorine content in water. It is widely applied in drinking water treatment plants, swimming pools, industrial water circulation systems, and other fields to ensure water quality safety and hygiene. This sensor can quickly respond to changes in chlorine concentration, providing reliable data support for water quality management.

Principle

The Nexisense CL-406-S sensor adopts a constant voltage measurement principle, determining the chlorine concentration by measuring the conductivity changes of chlorine ions in water. When the concentration of chlorine ions in water changes, the internal electrodes of the sensor generate corresponding electrical signals, which are converted into readable chlorine concentration values. This principle ensures the stability and accuracy of the sensor under different environmental conditions.

Structure Analysis

The structure of the Nexisense CL-406-S sensor emphasizes durability and reliability. Its main components include:

  • Shell Material: Made of POM and 316L stainless steel, providing good corrosion resistance and high-temperature tolerance.

  • Electrode: High-sensitivity electrode that can quickly respond to changes in chlorine content in water.

  • Connection Interface: M16-5 core waterproof connector, ensuring the safety and reliability of electrical connections.

Measurement Method

The Nexisense CL-406-S sensor supports two output methods:

  • RS-485 (Modbus RTU): Suitable for remote monitoring and data collection.

  • 4-20mA Output: Can be integrated with other monitoring devices for automated control.

Nexisense CL-406-S Residual Chlorine Sensor Technical Parameters

ParameterSpecification
ModelNexisense CL-406-S
Shell MaterialPOM and 316L
Measurement PrincipleConstant Voltage Method
Measurement Range0~2.000mg/L (HClO)
Resolution0.001mg/L
Accuracy±5% of reading; ±0.3°C
Response Time (T90)<90 seconds
Minimum Detection Limit0.05mg/L
Calibration MethodTwo-point calibration
Temperature CompensationAutomatic temperature compensation (Pt1000)
Output MethodRS-485 (Modbus RTU), 4-20mA (optional)
Storage Temperature-5 ~ 65°C
Working Conditions5 ~ 50°C, ≤0.2MPa, pH: 4~9
Installation MethodFlow cell installation, 3/4 NPT
Power Consumption2W @ 12V
Power Supply12 ~ 24V DC
Protection LevelIP68
Cable Length5 meters (other lengths can be customized)

Nexisense CL-406-S Residual Chlorine Sensor Installation and Maintenance

The installation process of the Nexisense CL-406-S sensor is simple and convenient. Users should ensure that the sensor is closely integrated with the circulation pool, with the electrode measurement part located near the inlet of the circulation pool to ensure a stable flow rate. It is recommended to control the flow rate at 30-60L/h to ensure the accuracy of the test.

For maintenance, the sensor needs to be calibrated and cleaned regularly. Users can follow these steps for calibration:

  1. Zero Calibration: Place the sensor probe in chlorine-free water for zero calibration.

  2. Slope Calibration: Place the sensor probe in a standard chlorine solution flow pool and wait for the value to stabilize before performing slope calibration.

Conclusion

The Nexisense CL-406-S Residual Chlorine Sensor is a high-performance water quality monitoring device. With its advanced measurement principle and reliable structural design, it has become an indispensable tool in drinking water treatment, swimming pools, and industrial water circulation systems. Its precise chlorine content detection capability and simple installation and maintenance processes make it an ideal choice for water quality management. Choose Nexisense CL-406-S to ensure the accuracy and safety of your water quality monitoring.

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