Water analyzer W501-DCL4.2

chlorinegassignal

The Online Free Chlorine Analyzer is equipped with a German-made CL4.2 sensor, utilizing a membrane-covered amperometric 2-electrode system with built-in electronics. It measures only pH-dependent residual chlorine, integrates a temperature sensor for automatic temperature compensation (avoiding sudden temperature changes), requires no zero-point adjustment but needs DPD-1 method calibration, and is affected by pH and O3. Key features include 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. - Product Structure: W501-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: 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: - Two electronic designs: Analog signal / Digital signal processing - Integrated temperature sensor enables automatic temperature compensation (sudden temperature changes must be avoided). - 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: - Basic Parameters: Measuring Parameter: Free chlorine; pH-dependent - Measurement Performance: Measurement Range: - Modbus RTU-Output: - 0.005~2.000ppm, resolution 0.001 mg/L; - 0.05~2.00ppm, resolution 0.01 mg/L; - 0.5~20.0 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; - 0.05~2.00ppm, resolution 0.01 mg/L; - 0.5~10.0 ppm, resolution 0.1 mg/L; - 0.5~20.0 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 - FAQ – Frequently Asked Questions - Products are designed and manufactured in China, following international quality standards and certified processes. - OEM/ODM services and private labeling are available for international clients. - Products comply with CE, RoHS, and other international certifications. - Fast and reliable delivery via major international couriers. - Samples available for evaluation before bulk orders. - Standard products ship within 5–7 days after order confirmation; customized products may take longer. - 24/7 technical support, product guidance, and warranty service provided. - Remote technical assistance, English manuals, and prompt solutions for international clients. - Ordering available via email or website inquiry with professional guidance. - Over 30 years of manufacturing experience, advanced technology, strict quality control, and global customer service. - Caractéristiques / Spécifications techniques : - Model: W501-DCL4.2 - Sensor: German-made CL4.2 free chlorine sensor - Measurement: pH-dependent free chlorine - Measurement Range: 0.005~2.000ppm (Modbus RTU), 0.005~0.500ppm to 0.5~20.0ppm (4-20mA) - Resolution: 0.001 mg/L, 0.01 mg/L, 0.1 mg/L depending on range - Response Time: T90 ≈ 30 seconds - 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: 2-pin terminal (2×1mm²), 5-pin M12 plug-on flange - Interfering Factors: ClO₂, O3, non-membrane cell electrolysis chlorine