Intelligent Online Residual Chlorine Analyzer with CL4.2 Sensor for Drinking Water

Published on by for Dabeco

Intelligent Online Residual Chlorine Analyzer with CL4.2 Sensor for Drinking Water

The Online Residual Chlorine Analyzer is equipped with German-made CL4.2 sensor, which adopts a membrane-covered amperometric 2-electrode system with built-in electronics, which only measures pH-dependent residual chlorine, integrates a temperature sensor for automatic temperature compensation avoiding sudden temperature change), requires no zero-point adjustment but needs DPD-1 method calibration, and is affected by pH and O3; in terms of technical features, it has high measurement stability, easy operation and maintenance, good environmental adaptability, and flexible signal & connection; It is mainly applied to water bodies without surfactants to avoid membrane contamination, such as swimming pool water, drinking water, service water, and process water, and must be used with a dedicated flow cell to meet flow and pressure requirements.

Working Principle

W510-DCL4.2 residual chlorine analyzer mainly consists of two parts: the control panel and the Germany-made CL4.2 free chlorine sensor. The controller displays the disinfectant value (main measured value), the pH value of the aqueous solution (a pH electrode is required for selection), and the working status. It outputs signals such as analog, digital, and switching signals.

Measurement System: Adopts a membrane-covered amperometric 2-electrode system with built-in electronics.

Detection Target: Only measures pH-dependent free chlorine; applicable to inorganic chlorine compounds (NaOCl, Ca(OCl)₂, chlorine gas, chlorine from membrane cell electrolysis); not suitable for chlorine from non-membrane cell electrolysis or organic chlorinating agents.

Signal Processing:

a. Two electronic designs: Analog signal/Digital signal processing

b. Integrated temperature sensor enables automatic temperature compensation (sudden temperature changes must be avoided).

c. Zero-point adjustment is unnecessary; calibration requires the DPD-1 method.

Application

Core Adaptation: Water bodies without surfactants (tensides) (surfactants contaminate the membrane and affect accuracy).

Applicable Water Types: Swimming pool water, drinking water, service water, process water.

Technical Parameters

 

Category

Detailed Parameters

Basic Parameters

Measuring Parameter: Free chlorine;pH-dependent

Measurement Performance

Measurement Range:

Modbus RTU-Output:

0.005~2.000ppm, resolution 0.001 mg/L;

0.05~20.00ppm, resolution 0.01 mg/L;

0.5~200.0 ppm, resolution 0.1 mg/L;

4-20mA-Output:

0.005~0.500ppm, resolution 0.001 mg/L;

0.005~2.000ppm, resolution 0.001 mg/L;

0.05~5.00ppm,   resolution 0.01 mg/L;

0.05~10.00ppm,   resolution 0.01 mg/L;

0.05~20.00ppm, resolution 0.01 mg/L;

0.5~100.0 ppm, resolution 0.1 mg/L;

0.5~200.0 ppm, resolution 0.1 mg/L.

Response Time T90: Approximately 30 seconds

Environmental Conditions

Water Temperature: 0~45℃ (no condensation);

Ambient Temperature: 0~55℃;

pH Operating Range: 6~8;

Flow Rate: 15~30 L/H (in flow cell)

Connection Method

2-pin terminal (2×1mm²), 5-pin M12 plug-on flange

Interfering Factors

ClO2: factor 9

O3

Electrolytically generated chlorine with a cell without membrane can produce trouble

 

Media

Taxonomy