YEX-OIL-206A High-Precision Online Oil in Water Sensor: Industrial UV Fluorescence Monitoring Solution

In today's water treatment and environmental monitoring fields, real-time monitoring of hydrocarbon (oil) content in water is crucial for protecting ecosystems and ensuring industrial emissions compliance. The YEX-OIL-206A online oil in water sensor launched by Yexsensor combines advanced UV fluorescence analysis technology with industrial-grade reinforced design, aiming to provide users worldwide with accurate, stable, and maintenance-free continuous monitoring solutions.

Core Technology Principle: UV Fluorescence Analysis Method

The excellent performance of the YEX-OIL-206A comes from its core UV Fluorescence principle:

• Specific Spectral Absorption: Dissolved oil molecules have obvious absorption and emission peaks under specific ultraviolet spectra.

• Excited Emission: The built-in ultraviolet LED light source of the sensor emits monochromatic light to irradiate the water sample. The dissolved oil in the water absorbs the light energy and becomes excited, then releases monochromatic light of another specific wavelength (emission peak).

• Linear Mapping: The fluorescence emission intensity captured by the sensor has a strict proportional relationship with the concentration of dissolved oil in the water.

Compared with traditional infrared absorption or spectrophotometry methods, the UV fluorescence method has higher sensitivity, can detect trace oil at ppm level, and is not affected by suspended solids in water.

YEX-OIL-206A High-Precision Online Oil in Water Sensor Product Features

1. Industrial-Grade Stability and Durability
Yexsensor uses high-lifespan UV LED cold light sources. Compared with traditional xenon light sources, it has short preheating time, extremely low light intensity attenuation, and a service life of several years. Its AC drive technology effectively filters interference from natural ambient light, ensuring stable readings even under strong outdoor light.

2. Digital Integrated Interface
The sensor natively supports RS-485 bus and standard Modbus/RTU protocol. This means it can be directly connected to PLC, DCS systems, or remote IoT terminals (RTU) without additional transmitters or complex signal conversion, significantly reducing deployment costs for system integrators.

3. Deep Water Protection Design
Adopting IP68 waterproof sealing design, the housing material is optional PVC or POM (acetal), with excellent corrosion resistance. The sensor can be submerged long-term at a depth of 20 meters underwater, suitable for various complex scenarios from shallow rivers to deep wells and marine monitoring.

4. Minimal Power Consumption and Maintenance
Under 12V power supply, its power consumption is only 0.2W. This ultra-low power design makes it very suitable for remote monitoring stations powered by solar energy.

YEX-OIL-206A High-Precision Online Oil in Water Sensor Technical Specifications

Typical Application Scenarios of YEX-OIL-206A High-Precision Online Oil in Water Sensor

1. Industrial Wastewater Discharge Monitoring
In petrochemical, steel, machinery manufacturing and other industries, discharged wastewater often contains trace dissolved oil. The YEX-OIL-206A can be installed at the sewage outlet to monitor oil content in real time, ensuring compliance with environmental regulations and avoiding huge fines caused by accidental leaks.

2. Tap Water Plant Intake Early Warning
If drinking water sources are contaminated by fuel or industrial oil, it will directly threaten water supply safety. Deploying Yexsensor sensors at the water intake enables 24-hour early warning. Once oil concentration exceeds the standard, automatic valve switching or alarm will be triggered.

3. Marine and Surface Water Environmental Research
For environmental monitoring in offshore aquaculture, around docks, and in rivers and lakes, the POM material housing can effectively resist seawater corrosion. With customized cables up to hundreds of meters, it enables large-scale real-time water quality surveys.

4. Cooling Circulating Water Monitoring
In power plants or heavy industry circulating cooling systems, oil leakage may cause reduced heat exchange efficiency or even equipment failure. Online monitoring of oil content can promptly detect internal leakage points in the system.

Installation Guidance and Electrical Connection

Installation Environment Requirements

• Space Clearance: To ensure the optical measurement path is not interfered with, the sensor probe should maintain more than 2cm distance from the container side wall and more than 10cm from the bottom.

• Flow Velocity Recommendation: It is recommended to install in areas with relatively stable water flow to avoid a large number of bubbles, as bubbles can cause refractive interference to optical measurements.

Electrical Wiring Definition

The YEX-OIL-206A uses a standard 5-core waterproof connector or loose wire output:

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

• Black wire: Power negative (GND)

• Blue wire: RS-485 A

• White wire: RS-485 B

Note: In long-term immersion or exposure to air, all wiring branch points must undergo strict waterproof sealing treatment.

Maintenance and Calibration Recommendations for YEX-OIL-206A High-Precision Online Oil in Water Sensor

Although the YEX-OIL-206A is designed for long-term operation, the cleanliness of the optical window directly affects measurement accuracy.

• Cleaning Frequency: Depending on the degree of water pollution, it is recommended to check the measurement window every 2-4 weeks.

• Cleaning Method: Rinse with fresh water. For stubborn dirt, gently wipe with a soft cloth dipped in a small amount of household detergent. Do not use sharp objects to scrape the optical window.

• Calibration Steps:

• Zero calibration: Use distilled water or deionized water as the reference.

• Slope calibration: Use a standard oil solution or standard simulant of known concentration for calibration.

Frequently Asked Questions (FAQ)

Q1: What types of oil can the YEX-OIL-206A detect?

A: The sensor mainly detects oils with fluorescent properties, including crude oil, refined oil, fuel oil, lubricating oil, and most aromatic hydrocarbons. For synthetic greases that contain no fluorescent components at all, please contact Yexsensor technical support for special evaluation.

Q2: Is the sensor easily affected by turbidity interference?

A: The sensor can filter most suspended solids interference through modulated light technology and specific filter design. However, in extremely high turbidity environments (over 100 NTU), it is recommended to add a self-cleaning device or pre-filtration.

Q3: Why are the measured values fluctuating greatly?

A: Please check if there are a large number of bubbles in front of the probe, or if the sensor is less than 10cm from the bottom. Also, ensure that the 485 communication line ground is common with the power negative to eliminate static or signal interference.

Q4: Can the sensor housing be customized?

A: Yes. We provide standard PVC housing for freshwater and enhanced POM housing for high-salinity seawater or industrial wastewater with weak acid/alkali properties.

Q5: How long is the life of the sensor's optical window?

A: Yexsensor uses high-transmittance corrosion-resistant materials. Under normal conditions without severe mechanical wear, the window itself has no service life limit. The UV LED light source typically has a service life of over 20,000 hours.

Q6: How to obtain data via Modbus?

A: The sensor default baud rate is 9600 and address is 0x01. For specific register addresses and data formats, please refer to the communication manual (Appendix) attached.

Q7: What if the cable is not long enough?

A: Our standard configuration is 5-meter cable. As an original manufacturer, we can customize corrosion-resistant cables of 10m, 50m or even longer according to your project needs.

Q8: Does this product have a quality guarantee?

A: Yes. Yexsensor provides comprehensive quality assurance: all products undergo 72-hour aging tests before leaving the factory. If the batch failure rate exceeds 2%, we accept direct returns and exchanges and bear the corresponding shipping costs.

Summary: Why Choose Yexsensor?

In water quality monitoring systems, the reliability of the sensor determines the vitality of the entire project. The Yexsensor YEX-OIL-206A is not just a hardware sensor — it is your reliable engineering partner. We ensure that every device leaving the factory can cope with harsh environmental challenges through strict standardized inspection procedures.

Ready to upgrade your water quality monitoring system?

If you are looking for an oil in water monitoring component that can operate stably for a long time with extremely high cost-effectiveness, please contact our expert team immediately. We can provide you with detailed protocol documents, installation guidance, and integration suggestions for specific industries.

Contact Yexsensor now to get the latest quotation and technical solution.