UV Fluorescence Non-contact Oil Spill Detection Sensor

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Detects oil on water surfaces using fluorescence technology

Page last modified
June 12 2025

UV Fluorescence Non-contact Oil Spill Detection Sensor is an advanced technology for detecting oil spills on water surfaces in real-time. The sensor emits UV pulses onto the water surface from a distance of 0-10 meters, exciting oil molecules to fluoresce. It utilizes the inherent fluorescent properties of oil to identify its presence and chemical composition.

The sensor can detect oil films as thin as 1 micron on the water surface. It operates by emitting 365nm UV pulsed LED light, which stimulates the oil to produce fluorescence in the 400-650nm range. The specific peak fluorescence varies by oil type (e.g. crude oil ~480nm, light oil ~420nm). The fluorescence data is then processed through classification algorithms to determine oil presence and provide concentration estimates or alarms.

Key features include 24/7 continuous monitoring capability, high sensitivity, and an IP68 waterproof rating for harsh environments. The sensor interfaces via RS-485 using Modbus protocol and requires 24V DC power, consuming less than 1.5W. It has a response time under 10 seconds and can take measurements every 5 seconds minimum.

This non-contact method avoids issues with biofouling or contamination common in submersible sensors. The technology is applicable across various industries including wastewater treatment, oil refineries, ports, airports, and manufacturing, providing early detection of oil spills to minimize environmental impact and ensure regulatory compliance.

Pros & Limitations
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Long-distance non-contact detection up to 10m above water surface
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High sensitivity - can detect oil films as thin as 1 μm
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24/7 continuous real-time monitoring
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IP68 waterproof rating for harsh environments
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Long lifetime (>2 years) with built-in calibration
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Low maintenance requirements
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Low power consumption (<10W)
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Easy integration via RS-485 interface and Modbus
Specification
Title Description
Core Tech
Leak DetectionInstrumentation & Measurement
Measuring Principle
UV fluorescence method
Measuring Distance
0-2m and 0-10m from surface
Sensitivity
1μm (micron) oil film
Response Time
<10s
Minimum Test Intervals
5s
Interface
RS-485, Modbus RTU
Power Supply
12V DC
Power Consumption
<1.5 W
Dimensions
Φ110mm*585mm
Weight
3350g
Protection Level
IP68
Working Temperature
0~ 50°C
Housing Material
SS316/ Titanium/ PVC
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Xi'an Desun Uniwill Electronic Technology Co., Ltd is a leading Chinese manufacturer specializing in water quality monitoring sensors and electrochemical instrumentation. The company combines research and development, production, and sales capabilities to create a wide range of products including dissolved oxygen sensors, pH sensors, turbidity sensors, oil-in-water sensors, and multi-parameter water quality sensors. With a professional production process and CNC machining center, Desun Uniwill can meet various customized customer needs and has a monthly production capacity of 5,000 sensors. The company has exported its products to over 30 countries worldwide, particularly in South America and Southeast Asia, and is known for its high-quality pre-sales, in-sales, and after-sales services. Desun Uniwill is committed to providing accurate and reliable water quality measurement solutions for various industries including environmental monitoring, water treatment, aquaculture, and industrial processes.

Country of Headquarters
China
Solution Deployed By
Company Name

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