NBL-OIL-206A Online Oil in Water Sensor Industrial On-site Water Quality Monitoring | Wastewater Discharge Monitoring

Product Overview

NiuBoL NBL-OIL-206A Online Oil in Water Sensor is an intelligent optical sensor developed for continuous industrial on-site water quality monitoring. Based on the ultraviolet absorption peak and fluorescence emission peak characteristics of dissolved oil, it uses a UV LED monochromatic light to excite the dissolved oil. After absorbing light energy, the dissolved oil releases fluorescence of a specific wavelength. The emission intensity is directly proportional to the dissolved oil content in water, achieving real-time and stable detection.

This sensor is widely applicable to scenarios that require precise control of petroleum pollutant discharge. It helps system integrators and engineering contractors build reliable water quality monitoring systems to meet environmental discharge standards and process control requirements. NiuBoL is committed to providing high-stability, low-maintenance IoT sensor solutions to ensure long-term reliable operation.

Core Advantages of Online Oil in Water Sensor

The NBL-OIL-206A fully considers the harsh environment of industrial sites in its design and highlights the following technical advantages:

• High-stability light source system: Uses UV LED light source with long lifespan and minimal drift. Combined with AC drive method, it effectively filters out natural light and ambient light interference, ensuring stable and reliable measurement values in outdoor or changing lighting environments.

• High precision and resolution: Measurement range 0～40ppm, resolution up to 0.01ppm, accuracy ±3% (or ±0.5℃), supports two-point calibration (zero point and slope), meeting precise monitoring requirements.

• Strong anti-interference and protection capability: IP68 protection rating, can work submerged at a depth of 20 meters. PVC/POM housing material is corrosion-resistant and suitable for freshwater, seawater, and industrial wastewater environments. The sensor window is easy to clean and maintain, reducing on-site maintenance frequency.

• Easy integration: Standard RS-485 interface, complies with Modbus/RTU protocol, can seamlessly connect to existing PLC, DCS, SCADA or IoT data acquisition systems. Wide voltage input 12～24VDC, power consumption only 0.2W@12V. Low-energy design facilitates long-term deployment.

• Installation and maintenance optimization: Low installation distance requirements (side wall >2cm, bottom >10cm), standard cable length 5 meters (customizable), M16-5 core waterproof male connector. Cleaning the measurement window only requires clean water or mild detergent, no complicated disassembly needed.

These advantages enable the NBL-OIL-206A to maintain data consistency in complex water environments, significantly reducing system integration difficulty and operation & maintenance costs.

Technical Specifications

NBL-OIL-206A Online Oil in Water Sensor Technical Parameters

Note: The sensor connector is an M16-5 core waterproof male connector. Red wire is power positive, black wire is GND, blue wire is 485A, white wire is 485B. It is recommended to perform waterproof treatment on all wiring points and use cables with certain corrosion resistance.

Application Scenarios of NBL-OIL-206A Online Oil in Water Sensor

The NBL-OIL-206A Online Oil in Water Sensor is suitable for a variety of industrial and environmental monitoring fields:

1. Industrial wastewater discharge monitoring: Online monitoring of treated production wastewater in petrochemical, oil refining, mechanical processing and other industries to ensure petroleum pollutants meet discharge standards and assist environmental compliance.

2. Offshore oil and gas field produced water monitoring: Platform produced water and associated water treatment systems, real-time detection of oil concentration to support reinjection or discharge decisions.

3. Sewage treatment plant inlet and outlet water monitoring: Monitoring of oil content in primary sedimentation, biological treatment and final effluent in municipal and industrial sewage treatment processes to optimize treatment technology.

4. Surface water / river and lake environmental monitoring: Emergency monitoring of oil spills or pollution incidents in water sources, rivers and lakes, as well as long-term deployment of automatic water quality stations.

5. Ship ballast water and port water quality management: Port and dock water monitoring to prevent ship oil pollution leakage risks.

6. Process water control in food, pharmaceutical and other light industries: Monitoring of process water that requires strict control of oil impurities.

By combining with other NiuBoL water quality sensors (such as pH, dissolved oxygen, conductivity), a complete multi-parameter water quality monitoring platform can be built.

Installation and Wiring

Installation requirements:

• The sensor should be installed vertically in the water body, with the front end at least 10cm away from the bottom of the pool or container.

• Keep a distance greater than 2cm from the side wall to avoid wall reflection or attachment interference.

• It is recommended to install in flowing or stirred water to ensure the measurement window fully contacts the water sample to be measured.

Electrical wiring (standard 4-core cable):

• Red wire: Power positive (12～24VDC)

• Black wire: Ground (GND)

• Blue wire: RS-485 A

• White wire: RS-485 B

After wiring, please carefully check to avoid short circuits or reverse connections. When the cable is immersed in water or exposed to the environment for a long time, all wiring points must be waterproofed and sealed, and corrosion-resistant cables should be used. Confirm the wiring is correct before powering on.

Maintenance Guide

To maintain measurement accuracy, it is recommended to regularly pay attention to the cleanliness of the measurement window. The outer surface can be rinsed with tap water. Stubborn dirt can be wiped with a soft cloth dipped in mild household detergent. Avoid excessive tension on the cable to prevent internal wire breakage. The sensor contains precision optical and electronic components inside and does not require user disassembly or repair.

Calibration method:

• Zero point calibration: Place the sensor in distilled water (front end ≥10cm from bottom), stabilize for 3-5 minutes, then perform zero point calibration.

• Slope calibration: Place in standard solution, stabilize, then perform slope calibration.

For specific operations, please refer to the operation manual included with the product.

FAQ

Q1. Is the NBL-OIL-206A suitable for seawater environments?

Yes, the sensor housing is made of PVC/POM material with good corrosion resistance. The IP68 protection supports long-term immersion in seawater. However, it is recommended to regularly check the cleanliness of the window in high-salinity environments.

Q2. How to integrate with existing PLC systems?

The sensor supports the standard Modbus/RTU protocol and can be directly connected to the PLC via the RS-485 interface. NiuBoL can provide communication protocol documents and sample code to facilitate rapid development by system integrators.

Q3. What to do if the measurement value fluctuates or becomes unstable?

The common cause is foreign matter attached to the measurement window. First clean the window surface with clean water; if the problem persists, check whether the cable connection is loose or the power supply voltage is stable.

Q4. Does the sensor require frequent calibration?

Under normal use, two-point calibration can be performed according to the requirements of the competent authority or actual drift conditions (recommended every quarter or half a year). The light source has high stability and daily drift is extremely small.

Q5. Can the cable length be customized?

Yes, the standard length is 5 meters, and longer cables can be customized according to project requirements. Please specify the requirements when ordering and confirm the waterproof treatment plan.

Q6. Will natural light or strong light environments affect the measurement?

No. The AC drive design effectively filters out natural light interference. The UV LED light source and specific filter system ensure pure signal.

Q7. Is the low power consumption of the sensor suitable for solar-powered systems?

Yes, the 0.2W@12V low power consumption design is very suitable for remote monitoring stations powered by solar or batteries.

Q8. What about product warranty and after-sales service?

NiuBoL products undergo 72-hour aging and stability testing, with strict control of factory pass rate. Standard warranty service is provided, and the technical support team can assist with on-site debugging and troubleshooting.

Summary and Cooperation Invitation

The NiuBoL NBL-OIL-206A Online Oil in Water Sensor takes high precision, strong stability, and easy integration as its core competitiveness, providing system integrators and engineering contractors with a reliable water quality oil monitoring solution. It not only helps enterprises achieve environmental compliance and process optimization, but also reduces long-term operation and maintenance costs and ensures the authenticity and validity of monitoring data.

If your project involves industrial wastewater treatment, oil and gas produced water monitoring, environmental water quality station construction or other online water quality monitoring needs, please feel free to contact the NiuBoL team. We can provide selection advice, integration solutions and customized services according to specific working conditions. Scan the contact information on the page or visit the NiuBoL official website to obtain the latest product manuals and cases, and work together to build a smarter and more reliable industrial IoT monitoring system.

NBL-OIL-206A Online Oil in Water Sensor Data Sheet

NBL-OIL-206A Online Oil in Water Sensor.pdf