Water analyzer W771-DAS2

leadchlorinesignal

Equipped with a reliable, economical amperometric sensor for continuous measurement of free chlorine or chlorine dioxide in drinking water and process applications. With a durable PVC-U housing, it suits standard environments (≤50°C) by balancing performance and value. Its core potentiostatic three-electrode system ensures high accuracy and long-term signal stability, supporting effective disinfection control. Easy to integrate, it offers multiple electronic options: analog voltage, digital processing (analog/digital Modbus RTU), and 4-20 mA current loop. It features automatic temperature compensation and enables indefinite dry storage (no electrolyte), simplifying inventory management. As a cost-effective, reliable choice, the W771-DAS2 excels in standard water treatment—from municipal drinking water to industrial process water—where extreme conditions are absent. Working Principle W761-DAS2 contains a display instrument and a versatile and cost-effective amperometric sensor for continuous monitoring of free chlorine or chlorine dioxide. With its PVC-U housing, it is designed for reliable performance in standard drinking water and process water applications up to 50°C, providing a robust and economical solution for disinfection control. Application Fields - Disinfection control in municipal drinking water treatment plants. - Monitoring of chlorine levels in commercial and residential building water systems. - Process water treatment in various industrial settings (where temperature is ≤ 50°C). - Cooling water systems operating within standard temperature ranges. Functional Features - Cost-Effective & Robust: PVC-U housing provides durability for standard applications. - Precise Measurement: Potentiostatic 3-electrode amperometric system ensures accuracy. - Output Flexibility: Available in analog (voltage/4-20 mA) and digital Modbus RTU versions. - Optimized Maintenance: Optional RV1 cleaning accessory extends maintenance intervals. - Logistical Advantage: Can be stored dry (without electrolyte) indefinitely. Technical Parameters - Measurands: Free Chlorine (AS2-CL), Chlorine Dioxide (AS2-CD) - Application Medium: Drinking Water, Process Water (up to 50°C) - Housing Material: PVC-U - Measuring Range: CL (H): 0.005...2.000 ppm (without RV1) - Output Signals: Analog: 0...±2 V, 4...20 mA; Digital: Modbus RTU - Max. Working Pressure: 8 bar (with retaining ring in flow chamber) - Operating Temperature: Water: 0...+50°C - pH Range: CL: pH 5 - pH 9 - Response Time (T90): ≈ 30 seconds FAQ – Frequently Asked Questions - Where are your products manufactured? Our products are proudly designed and manufactured in China, following international quality standards and certified processes. - Can you provide OEM/ODM services for international clients? Yes, we offer customized solutions and private labeling to meet your brand’s needs worldwide. - Are your products compliant with international safety and quality standards? Absolutely. Our products are tested to meet CE, RoHS, and other international certifications. - How do you handle shipping and delivery for overseas orders? We cooperate with major international couriers to ensure fast and reliable delivery to your location. - Can I get product samples before placing a large order? Yes, we provide samples so you can evaluate product quality before committing to bulk orders. - What is the typical lead time for production and delivery? For standard products, we usually ship within 5–7 days after order confirmation. Customized products may take slightly longer. - How do you support clients after the purchase? We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation. - Do you provide support for international clients after purchase? Yes, we offer remote technical assistance, manuals in English, and prompt solutions to any issues, ensuring smooth use worldwide. - How can I place an order if I am located overseas? You can contact our sales team directly via email or website inquiry. We provide professional guidance throughout the ordering process. - Why should I choose your company over other suppliers in China? We combine over 30 years of manufacturing experience, advanced technology, strict quality control, and global customer service to deliver reliable, high-quality solutions. Additional Image - Model: W771-DAS2 Technical Specifications (Summary) - Measurands: Free Chlorine (AS2-CL), Chlorine Dioxide (AS2-CD) - Application Medium: Drinking Water, Process Water (up to 50°C) - Housing Material: PVC-U - Measuring Range: CL (H): 0.005...2.000 ppm (without RV1) - Output Signals: Analog: 0...±2 V, 4...20 mA; Digital: Modbus RTU - Max. Working Pressure: 8 bar (with retaining ring in flow chamber) - Operating Temperature: Water: 0...+50°C - pH Range: CL: pH 5 - pH 9 - Response Time (T90): ≈ 30 seconds