Industrial Grade Online Nitrate Ion Sensor RS-485/4-20mA

This is an integrated nitrate ion sensor designed specifically for continuous online monitoring. Based on the highly selective PVC membrane ion selective electrode method, combined with Pt1000 automatic temperature compensation, it can quickly and accurately detect nitrate ion concentration in complex water samples. Compared to traditional laboratory manual testing, this sensor achieves real-time digital output, significantly reducing operation and maintenance costs, and is widely used in fields such as sewage treatment, surface water monitoring, drinking water source protection, industrial circulating water, and agricultural irrigation and drainage.

1. Accurate measurement and rapid response. The default range is 0-100 mg/L (expandable to 1000 mg/L), with a resolution of 0.1 mg/L and an accuracy of ± 5% or ± 2 mg/L (whichever is higher). The T90 response time is less than 60 seconds, meeting the requirements of dynamic water quality monitoring.
2. Rich output interfaces and convenient system integration. Standard RS-485 bus (Modbus RTU protocol) and optional 4-20 mA current output, can be directly connected to third-party devices such as PLC, DCS, industrial touch screens, etc.
3. Sturdy structure and strong environmental adaptability. Made of POM+316L stainless steel material (also available in ABS version), with a protection level of IP68, equipped with 3/4 NPT installation thread, supporting immersion installation, suitable for scenarios such as pipelines, water tanks, and open channels.
4. Intelligent maintenance and calibration. Support two-point on-site calibration, with built-in reference solution for electrodes and long lifespan; And provide a detailed list of interfering ions to help users avoid measurement errors. Whether it is building a new system or renovating an old station, ZW-NO3-PR can stably and economically complete the nitrate online monitoring task.

RS485/4-20 mA parameters:

Packaging:

Single gross weight: 1.200 KG

Single package size: 37X26X5 cm

Product Description: 

Customer on-site examples: 

Application: 

• Wastewater treatment: Real time monitoring of nitrate concentration at the discharge outlet and compliance control.
• Surface water monitoring: Investigation of river and lake water quality and analysis of eutrophication.
• Drinking water source: Ensure that the nitrate in the water source does not exceed the standard.
• Industrial circulating water: prevents nitrate corrosion or scaling.
• Irrigation and drainage in farmland: assessment of agricultural non-point source pollution.

Certifications：

We are best water quality sensor manufacturer and exporter in China with more than 10 years. Our water quality sensor products are certified  with of CE, ROHS.

Why RS485 for Water Quality Nitrate Ion Monitoring?

Industrial-Grade & Stable Data Transmission: RS485 delivers robust anti-interference performance for real-time, reliable hardness data transmission in harsh environments (e.g., industrial boilers, municipal water supply), ensuring accurate monitoring.
Easy Integration & Scalability:Supports multi-node networking, seamlessly integrates with mainstream PLC/RTU systems, enabling flexible deployment and reducing system integration costs and maintenance complexity.

Production Process:

Why choose us:

1. Strong R & D: 30+ Senior experts and highly educated personnel formed a R & D team, heavy investment, master a number of core technologies and patents.
2. Professional and effective solutions: for smart environmental protection, agriculture and other fields, to provide customized compound networking solutions.
3. Full range of products: covering the whole industry chain products from data collection to platform services to meet diverse needs.
4. Excellent quality: we have perfect quality control system, strictly quality control each production link, low defective rate. 
5. Good service: 7×24 hours fast response, Professional pre-sale, sale, after-sales team support.