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Online Residual Chlorine Sensor

Product Introduction:

The residual chlorine sensor uses an ion-selective membrane electrode to calculate residual chlorine concentration under specific pH and temperature conditions. It is suitable for online monitoring of hypochlorous acid (HOCl) and residual chlorine in drinking water and industrial process water disinfection processes, especially for monitoring residual chlorine in feed water for membrane treatment processes such as reverse osmosis. It is widely used in water treatment plants and pipeline networks for water quality monitoring.

Product Features:

Simple installation with a plug-and-play selective membrane sensor.

High detection accuracy with built-in pH and temperature compensation algorithms.

Good reproducibility and long-term stable operation.

User-friendly, supporting single-point or two-point calibration.

Easy maintenance, calibrate every three months, replace membrane and electrolyte every six months.

Selectable measurement range to meet different application needs.


Application Fields

Technical Specifications

Measurement Principle

Electrode Method

Measurement Range

0-2 mg/L; 0-20 mg/L

Measurement Accuracy

2%

Resolution

0-2 ppm; 0.01 mg/L

Response Time (T90)

<90s (at 25°C)

Communication Mode

RS485 Modbus Protocol

Calibration Method

Single-point or two-point calibration

Storage Temperature

0 to 50°C

Temperature Range

0 to ±50°C

Polarization Stability

No less than 6 hours

Interfering Substance

Chlorine dioxide, ozone, bromine

Power Supply

DC 9-30V, current <30 mA


Product Selection

           S18-A          

Digital model, PVC material, length 135mm*diameter 25mm.