Online Chlorine Dioxide & Chlorine Analyzer with AS3 Sensor for Hot Water upto 70℃
Working Principle
The entire measurement system mainly consists of two parts: the instrument and the sensor. The instrument displays the chlorine or dioxide chlorine value (the main measured value), the pH value of the aqueous solution (a pH electrode needs to be selected optionally), and the working status. It outputs signals such as analog, digital, and switching signals. The AS3 is a robust amperometric sensor built for challenging water monitoring tasks. Its PEEK housing provides superior resistance to high temperatures (up to 70°C) and harsh chemicals, making it perfect for precise measurement of free chlorine or chlorine dioxide in demanding industrial and drinking water applications.
Application Fields
Disinfection control in drinking water treatment plants (municipal and industrial).
Monitoring of process water in applications requiring hot water (up to 70°C), such as in the food and beverage industry.
Cooling water systems.
Any application using chlorine dioxide as a disinfectant.
Key Features
High-Temp & Chemical Resistance:PEEK material ensures long-term reliability in aggressive environments and hot water systems.
Proven Measurement Principle:Potentiostatic 3-electrode system guarantees high accuracy and long-term stability.
Output Flexibility:Choose from analog voltage/current outputs or digital Modbus RTU for easy integration into any control system.
Optimized Maintenance: The optional RV1 cleaning accessory extends cleaning cycles to 6-12 months and boosts the signal strength.
Integrated Temperature Compensation:Automatic adjustment for accurate readings across the entire temperature range.
Technical Parameters
Parameter | Specification |
Measurands | Free Chlorine (AS3-CL), Chlorine Dioxide (AS3-CD) |
Application Medium | Drinking Water (cold and hot, up to 70°C) |
Housing Material | PEEK |
Measuring Ranges (examples) | CL (High): 0.005...2.000 ppm (without RV1) / 0.005...0.700 ppm (with RV1) |
Output Signals | Analog: 0...±2 V, 4...20 mA; Digital: Modbus RTU |
Power Supply | Typically 9...30 VDC or 10...30 VDC, depending on version |
Max. Working Pressure | 0.5 bar (standard) / 8 bar (with retaining ring in TARAflow FLC flow chamber) |
Operating Temperature | Water: 0...+70°C; Ambient: 0...+55°C |
pH Range | CL: pH 5 - pH 9 |
Response Time (T90) | Approx. 30 seconds |
Connection | 5-pole M12 plug-on flange (IP68) or 2-pole terminal (IP65) |
FAQ – Frequently Asked Questions
1. Where are your products manufactured?
Our products are proudly designed and manufactured in China, following international quality standards and certified processes.
2. Can you provide OEM/ODM services for international clients?
Yes, we offer customized solutions and private labeling to meet your brand’s needs worldwide.
3. Are your products compliant with international safety and quality standards?
Absolutely. Our products are tested to meet CE, RoHS, and other international certifications.
4. 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.
5. 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.
6. 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.
7. How do you support clients after the purchase?
We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation.
8. 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.
9. 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.
10. 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.
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