NBL-CL-206 Water Quality Sensor Online Residual Chlorine Sensor

The Online Residual Chlorine Sensor consists of two platinum electrodes and a reference electrode, forming a micro-battery measurement system. During measurement, a stable potential is maintained at the electrode measurement end. Different components in the sample generate varying electrical currents at this potential, which are linearly correlated. This sensor is suitable for continuous monitoring of residual chlorine content in water solutions, and is commonly used in drinking water treatment plants, bottling plants, swimming pools, cooling circulation systems, and water quality treatment projects.

NBL-CL-206 Water Quality Sensor Online Residual Chlorine Sensor Technical Specifications

1、Application environment description

It is used for continuous monitoring of residual chlorine content in aqueous solution in drinking water treatment plants, canning plants, drinking water distribution networks, swimming pools, cooling circulating water, water quality treatment engineering and so on.

2、Electrical connection

2.1. Installation

Using the matching circulation pool installation, the electrode and the circulation pool are installed closely to ensure that the electrode measurement part is placed in the area near the inlet of the circulation pool, and the flow rate should not be aligned to the outlet as far as possible to ensure the steady flow rate. It is suggested that the flow rate should be controlled at 30 ≤ 60L / h to ensure the accuracy of the test.

2. 2.Electrical connection

a)Red wire-power cord（12～24VDC）

b)Black wire-ground wire（GND）

c)Blue Line-485A

d)White Line-485B

e)Bare wire-shield line

After the wiring is completed, it should be carefully checked to avoid the wrong connection before the power is turned on.

Cable specification: Considering that the cable is immersed in water (including sea water) or exposed to air for a long time, the cable has a certain corrosion resistance. The Φ 6 mm, joint of cable outer diameter needs waterproof treatment.

3、Maintenance

3.1.Detection and maintenance of sensors

The new electrode and the long-term electrode need to be activated before using, and the sensor is put in tap water for 24 hours. If the return value is inaccurate, you need to do th

a)Zero calibration: the sensor probe is placed in chlorine-free water for zero calibration after numerical stability.

b)Slope calibration: the sensor probe is placed in the flow pool of residual chlorine standard liquid, and the slope calibration is carried out after the value is stable. It is recommended to use HClO standard liquid of 1~2mg/L. The preparation and determination of standard liquid can be referred to the determination of national standard residual chlorine.

Note: The sensor has been calibrated before leaving the factory, because the preparation of its standard liquid requires high personnel requirements, non-professionals may not be able to do this work, only if the value is not correct, users are advised to calibrate themselves.

4、Quality assurance

The quality inspection department has standardized inspection rules, advanced and perfect testing equipment and means, and strictly according to the rules of inspection, 72 hours aging test, stability test, do not let a unqualified product leave the factory.

NBL-CL-206 Water Quality Sensor Online Residual Chlorine Sensor Data Sheet

NBL-CL-206 Water Quality Sensor Online Residual Chlorine Sensor.pdf