NBL-WQ-CU-4 Online Copper Ion Sensor | Crystal Membrane Copper Ion Selective Electrode | Online Copper Ion Monitoring

NiuBoL NBL-WQ-CU-4 online copper ion sensor adopts patented crystal membrane copper ion selective electrode with automatic temperature compensation. It is specially designed for industrial wastewater, electroplating processes, environmental monitoring and heavy metal treatment scenarios, providing high-stability, high-precision and low-maintenance real-time online copper ion measurement solutions to help system integrators and engineering contractors accurately control heavy metal emissions and process control.

Precise Monitoring of Copper Ion Concentration in Water to Help Achieve Compliant Heavy Metal Discharge and Process Quality Control

Excessive copper ion concentration in industrial wastewater, electroplating solutions and environmental water bodies can easily lead to environmental penalties, equipment corrosion and product quality issues. NiuBoL NBL-WQ-CU-4 split-type online copper ion sensor effectively solves the pain points of traditional electrodes such as short lifespan, serious drift, frequent maintenance and difficult system integration through patented crystal membrane electrode and industrial-grade stable design, providing professional support for long-term continuous and reliable monitoring.

Three Core Advantages

• Patented Crystal Membrane Electrode High Stability: Internal reference solution slowly seeps out under 1Bar pressure, stable reference system, significantly extended electrode life.

• High Precision Automatic Compensation: Automatic Pt1000 temperature compensation, two-point calibration method, accurate and reliable measurement.

• Industrial Protocol Easy Integration: Supports RS-485 (Modbus RTU protocol) and optional 4-20mA output, fast access to PLC, DCS, SCADA and IoT platforms.

NBL-WQ-CU-4 Online Copper Ion Sensor Overview

NiuBoL NBL-WQ-CU-4 online copper ion sensor is a professional crystal membrane ion selective electrode monitoring device launched by NiuBoL, specially used for fast and accurate online detection of copper ion content in water.

The product is divided into two versions: NBL-WQ-CU-4A (POM+ABS economic type) and NBL-WQ-CU-4S (POM+316L corrosion-resistant type), adapting to different corrosive media requirements. IP68 high protection rating combined with 3/4 NPT pipe thread installation method makes it widely suitable for submersible, pipeline and tank installation scenarios. Built-in automatic temperature compensation function effectively reduces the impact of temperature changes on measurement results, meeting the stringent requirements for heavy metal monitoring in industrial sites.

NBL-WQ-CU-4 Online Copper Ion Sensor Key Advantages

1. Patented Crystal Membrane Copper Ion Electrode
       Adopts patented copper ion selective electrode. The internal reference solution seeps out extremely slowly through the microporous salt bridge under ≥100KPa pressure, building a highly stable reference system. Electrode life is far longer than ordinary industrial electrodes, effectively reducing replacement frequency and long-term operation & maintenance costs.

2. High Precision Measurement Performance
       Provides two range options: 0～100 mg/L and 0～1000 mg/L. Resolution 0.01 mg/L (low range), accuracy ±10% of reading or ±1 mg/L, temperature accuracy ±0.5℃, response time T90＜60s, suitable for low concentration environmental monitoring and high concentration wastewater treatment.

3. Industrial-grade Protection Design
       IP68 protection rating supports long-term immersion use. 4A type is suitable for conventional environments, 4S type adopts 316L stainless steel shell, more suitable for acid-base or highly corrosive media. The product has undergone 72-hour aging and stability testing before delivery to ensure reliability.

4. Installation and System Integration Friendly
       Standard 3/4 NPT pipe thread design for easy installation. Open Modbus RTU protocol facilitates quick connection to various control systems by system integrators, significantly shortening project implementation cycle.

5. Simple and Economical Maintenance
       Supports two-point calibration (zero + slope), comes with 1mg/L and 10mg/L standard calibration solutions. Clear electrode cleaning, maintenance and activation guidelines are provided to reduce on-site operation and maintenance difficulty.

NBL-WQ-CU-4 Online Copper Ion Sensor Technical Specifications

Applications

• Electroplating wastewater treatment: Real-time monitoring of copper ion concentration in electroplating bath and wastewater to optimize recovery and treatment processes.

• Industrial heavy metal wastewater treatment: Online monitoring at discharge outlets in copper smelting, circuit board, metal processing and other industries to ensure compliant discharge.

• Environmental water quality automatic monitoring stations: Background monitoring of copper ions in rivers, lakes and waters around industrial parks, supporting environmental supervision platforms.

• Circulating cooling water and process water control: Prevent equipment corrosion caused by copper ion accumulation and guide water treatment chemical dosing.

• Municipal sewage plants and reclaimed water monitoring: Assist in evaluating heavy metal removal process effectiveness and ensure effluent safety.

Wiring & Installation

Installation Notes: The sensor must not be installed upside down or horizontally. It should be installed at least tilted more than 15° to ensure normal seepage of reference solution and stable electrode operation.

Electrical Connection (5-core twisted shielded cable):

• Red wire → Power positive (12～24VDC)

• Black wire → Ground (GND)

• Blue wire → 485A

• Green wire → 485B

• Yellow wire → Current output (optional, can be left floating if not used)

FAQ

Q1. What are the two models of the NBL-WQ-CU-4 series? How to choose?

Divided into 4A type (POM+ABS) and 4S type (POM+316L). 4A type is recommended for conventional wastewater, 4S type is recommended for highly corrosive media.

Q2. What output methods does the sensor support?

Standard RS-485 Modbus RTU protocol, supports optional 4-20mA current output, easy to connect to various industrial control systems.

Q3. What is the service life of the copper ion electrode?

Adopts patented reference solution slow seepage design with stable reference system. Electrode life is significantly longer than ordinary industrial electrodes, depending on medium conditions and maintenance.

Q4. What is the calibration method and precautions?

Adopts two-point calibration (zero + slope). Factory calibrated. It is not recommended to calibrate frequently unless necessary. Allow 5 minutes standing for stability for both zero and slope solutions during calibration.

Q5. What are the installation angle requirements?

Must be installed at an angle greater than 15°. Must not be installed upside down or horizontally. This is the key to ensuring normal operation of the reference system.

Q6. How to activate and maintain the electrode daily?

Soak new electrode in tap water for 24 hours for activation before first use; clean with distilled or deionized water and dry daily; store dry and with protection bottle for long-term storage.

Q7. What is the working pH and temperature range of the sensor?

Recommended working temperature 0～40℃, pH value 4～10. Best measurement performance is obtained within this range.

Q8. What is the product warranty policy?

One year warranty for the whole machine from the date of sale. The electrode, as a consumable, has a six-month warranty. Failures caused by improper use or human damage are not covered.

Summary

NiuBoL NBL-WQ-CU-4 online copper ion sensor provides a professional and reliable online detection tool for heavy metal wastewater treatment, electroplating process control and environmental monitoring with its patented crystal membrane electrode, high-stability reference system, automatic temperature compensation and IP68 protection design. It helps engineering teams accurately master key copper ion parameters, ensure process stability and compliant discharge, while effectively reducing operation and maintenance costs.

Need copper ion sensor selection guidance, Modbus register address table, calibration solution instructions or project application cases? Feel free to contact the NiuBoL technical support team. We will provide you with comprehensive and professional water quality heavy metal monitoring solutions.

NBL-WQ-CU-4 Online Copper ion Sensor Data Sheet

NBL-WQ-CU-4 Online Copper ion Sensor.pdf