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W771-DCS4

Product catalog summary

Overview: The Intelligent Online Free Chlorine Analyzer W771 with CS4 Sensor is designed for monitoring chlorine levels in various water applications, including tap water, swimming pools, and industrial water treatment. It features a German-made CS4 sensor with special osmotic membrane technology to resist chemical interference and reduce pH dependence, ensuring reliable and accurate data.

Specifications:

Measurement Parameters: Chlorine and optional pH.
Measuring Ranges: Multiple ranges from 0.005 to 2000 mg/L for different applications.
Accuracy: Varies by range, with a typical error of ±2% or a specified ppm value.
Response Time: T90 approximately 2 minutes.
Drift: Approximately -1% per month after calibration.
pH Range: 4.0 - 12.0, depending on the electrode.
Maintenance Cycle: ≥90 days.
Conductivity Range: 10μS/cm - 50mS/cm, with special applications for higher values.

Electrical and Display:

Display: LCD screen.
Power Supply: 105-235VAC or 24VDC, with power consumption ≤3W.
Analog Output: Two-way analog output with options for 4-20mA signals.
Digital Output: RS485 interface with MODBUS RTU protocol.
Relay Output: Three-way relay with specified voltage and current ratings.

Environmental Performance:

Flow Rate: 250-500 mL/min in flow chamber.
Protection Level: IP43.
Water Pressure: ≤6 bar, with a pressure-reducing valve.
Working Humidity: <90%, no condensation.
Temperature Ranges: Instrument: -15°C to 50°C; Sensor: 0.1°C to 45°C, with special applications up to 70°C.
Storage Temperature: Instrument: -20°C to 60°C; Sensor: 0.1°C to 55°C.

Catalog excerpts

Intelligent Online Free Chlorine Analyzer W771 with CS4 Sensor for Tap Water The Online Residual Chlorine Analyzer is equipped with German-made CS4 sensor, its detection part adopts special osmotic membrane technology, resisting chemical interference (mainly from surfactants) and reducing pH dependence. The sensor is unaffected by water quality, with fast response, stable performance, low cost, minimal maintenance, and provides reliable, accurate data. The instrument with a LCD screen displays disinfectant value (main), aqueous solution pH (requires optional pH electrode), and working status, outputting analog, digital, and switching signals. This analyzer applied to tap water, swimming pool water, medical wastewater, sewage water treatment, fruit and vegetable disinfection; seawater, high-salt seawater, pipeline disinfection, industrial water treatment fields etc. Dimension Simulation of 2-Pin Terminal Simulated Electrode M12 Aviation Digital Electrode M12 Aviation Connection for Simulated Electrodes

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DABECO Catalogs: Watersensor&analyzer-11/18/2025 page 2 of 2 www.dabeco.com intemational-sales@dabeco.

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All DABECO Co.,Ltd catalogs and technical brochures

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