NBL-WQ-FLU-4 Online Fluoride Ion Sensor | For Semiconductor Manufacturing, Metal Processing and Drinking Water Treatment

NiuBoL NBL-WQ-FLU-4 series online fluoride ion sensor adopts crystal membrane ion selective electrode (ISE) technology, with built-in automatic temperature compensation and digital transmitter. Supports RS485 Modbus RTU protocol, specially designed for semiconductor wastewater, drinking water monitoring and industrial defluorination processes, providing high-precision and long-life fluoride online monitoring solutions.

Precise Control of Fluoride Concentration: NiuBoL Industrial-grade Online Fluoride (Fluoride) Sensor

Overcoming complex water quality measurement drift pain points, the long-term stability choice for system integrators.

• Patented Crystal Membrane Electrode Technology: Extremely low microporous salt bridge exudation rate, ultra-stable reference system, significantly longer service life than similar products.

• Split-type Transmitter Architecture: Digital signal output, strong anti-interference ability, supports stable transmission over 1000 meters.

• Industrial-grade Modbus Protocol: Standard RS485 interface, seamlessly connects to PLC and digital factory systems, reducing integration costs.

NBL-WQ-FLU-4 Online Fluoride Ion Sensor Product Overview

In industries such as semiconductor manufacturing, metal processing and drinking water treatment, real-time fluoride ion concentration control is not only related to whether emissions meet standards, but also directly affects process safety and quality. Traditional manual colorimetric methods or expensive ion chromatographs cannot meet the needs of 24-hour continuous monitoring and have high maintenance costs.

NiuBoL NBL-WQ-FLU-4 series split-type online fluoride ion sensor combines advanced crystal membrane ion selective electrode (ISE) technology with intelligent transmitter circuits. By measuring the potential difference generated by fluoride ions on the electrode sensitive membrane and combining it with NiuBoL's nonlinear correction algorithm, it achieves fast and accurate sensing of fluoride content in water bodies. As an important member of NiuBoL's digital water quality family, it aims to provide environmental engineering contractors and system integrators with a cost-effective, industrial-grade end-to-end monitoring solution.

NBL-WQ-FLU-4 Online Fluoride Ion Sensor Core Technical Advantages

1. Patented Reference System and Long-life Design

NBL-WQ-FLU-4 adopts a patented fluoride ion electrode. Its core advantage lies in the reference system: the internal reference solution undergoes extremely slow physical exudation through a microporous salt bridge under a constant pressure of at least 100KPa (1Bar). This design ensures long-term stability of the liquid junction potential, effectively prevents external medium backflow from contaminating the electrode, and makes the service life of NiuBoL electrodes far superior to ordinary industrial electrodes on the market.

2. Digital Transmission and Ultra-fast Response

The sensor integrates a high-impedance input converter and Pt1000 automatic temperature compensation system inside. Within 0～40℃ environment, the sensor can automatically correct the influence of water temperature on ion activity. Combined with digital filtering algorithms, its response time (T90) is less than 60 seconds, capable of capturing instantaneous fluoride concentration fluctuations in industrial processes and providing real-time reference for automatic dosing systems.

3. Diversified Material Options

To adapt to different industrial application scenarios, NiuBoL provides two shell material options:

• 4A Model: Uses POM and ABS, with good electrical insulation and chemical stability.

• 4S Model: Upgraded to 316L stainless steel body, with stronger physical impact resistance and mechanical strength, suitable for harsher engineering environments.

4. Ultimate Protection and Integration Convenience

The sensor has true IP68 protection level, not only supports submersible installation, but its built-in 3/4 inch NPT thread can also be easily screwed into various standard pipe tees or tank interfaces. The standard RS485 Modbus RTU protocol allows multiple sensors to be mounted on one gateway, greatly simplifying on-site wiring.

NBL-WQ-FLU-4 Online Fluoride Ion Sensor Technical Specifications

Typical Application Scenarios

• Semiconductor and photovoltaic wastewater treatment: Monitor the effluent concentration of fluorine-containing wastewater treatment systems to ensure that water quality after calcium fluoride precipitation meets discharge standards.

• Drinking water pipe network monitoring: Real-time monitoring of fluoride content in areas with excessive fluoride and fluoridation processes to ensure drinking water safety for residents.

• Metal processing and electroplating: Control fluoride ion concentration in cleaning tanks or chemical polishing solutions to maintain process stability.

• Laboratory automation systems: Access as online sensors to laboratory water quality circulation monitoring stations to provide continuous digital records.

Installation and Maintenance Guide

1. Key Installation Angle

Special Note: Due to the physical characteristics of the ion selective electrode internal structure, the sensor must not be installed upside down or horizontally. The measuring end must face downward and be installed with a tilt of at least 15 degrees or more.

2. Electrical Wiring Definition (5-core shielded cable)

• Red wire: Power positive (12～24V DC)

• Black wire: Power ground (GND)

• Blue wire: RS-485 A

• Green wire: RS-485 B

• Yellow wire: 4-20mA (optional, leave floating if not used)

3. Daily Maintenance

• Activation Treatment: Before use or after dry storage, the electrode needs to be soaked in tap water for 24 hours for activation.

• Surface Cleaning: If sediment is attached to the crystal membrane, rinse with distilled water. Do not use organic silicone grease to contact the electrode.

FAQ

Q1. What is the typical electrode life of NiuBoL fluoride ion sensor?

A: Under normal working conditions, due to the patented constant pressure microporous salt bridge design, the electrode life is usually longer than ordinary electrodes. The electrode is a consumable part. NiuBoL provides 6 months warranty for the electrode part.

Q2. Why is the measurement pH range limited to 4～10?

A: When pH < 4, fluoride ions will form hydrofluoric acid (HF), and the sensor cannot sense molecular fluorine; when pH > 10, hydroxide ions will cause serious interference to the fluoride ion electrode, affecting reading accuracy.

Q3. Does the sensor support direct connection to configuration software?

A: Fully supported. Through the standard Modbus RTU protocol, you can directly connect NiuBoL sensors to common configuration software, touch screens or SCADA systems.

Q4. Can the sensor be installed horizontally on the side of the pipe?

A: Not recommended. To ensure effective contact between the internal reference system and the sensing membrane, a tilt of at least 15° must be maintained. If the pipe is narrow, it is recommended to use bypass installation or a specially designed 45° interface.

Q5. After receiving the product, if the value deviates, do I need to calibrate immediately?

A: The electrode has been strictly calibrated before leaving the factory. Due to environmental differences, it is recommended to activate it in tap water for 24 hours before re-testing. If the error does exceed the range, please refer to the manual for two-point calibration.

Q6. The measurement window looks a bit cloudy, will it affect the reading?

A: After long-term use, the crystal membrane may become semi-transparent, usually rinsing is sufficient. If the data is still inaccurate after calibration, it means the electrode may be invalid and needs replacement.

Q7. Does NiuBoL randomly include calibration solutions?

A: Yes. The standard configuration of this product includes 100mL each of 1mg/L and 10mg/L calibration solutions, convenient for integrators to complete preliminary debugging on site.

Q8. Can it be used in seawater environments?

A: POM material has certain corrosion resistance. However, attention should be paid to potential interference from other ions in seawater. It is recommended to consult NiuBoL technical team for application evaluation.

NiuBoL NBL-WQ-FLU-4 sensor demonstrates excellent industrial reliability in the field of water quality fluoride monitoring with its stable reference system and digital transmitter architecture. We are committed to providing global integrators with easy-to-install, low-maintenance, and highly digital sensing front-ends.

Professional Support: Our quality inspection process includes 72-hour dynamic aging tests to ensure that every NiuBoL sensor meets the stringent requirements of engineering sites.

Are you looking for a reliable monitoring solution for the automation upgrade of industrial defluorination processes? NiuBoL is willing to be a solid backing for your digital water projects!

NBL-WQ-FLU-4 Online Fluoride Ion Sensor Data Sheet

NBL-WQ-FLU-4 Online Fluoride Ion Sensor.pdf