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12 - 24VDC Hydrocarbon Sensor For Exhaust Gas Wash Water Monitoring

Basic Information
Place of Origin: China
Brand Name: Desun Uniwill
Minimum Order Quantity: 1
Price: Determined by the number of specific orders
Packaging Details: Carton packaging
Payment Terms: L/C, D/A, D/P, T/T
Supply Ability: 200 Piece/Pieces per Month
Detail Information
Output Signal: RS-485, MODBUS Protocol Theory: Fluorescence Method
Measuring Range: 0~1000 Ppb Protection Level: Protection Level
Power Supply: 12-24VDC Response Time: <10s
Working Temperature: 0~ 50°C
High Light:

Fluorescence Method Hydrocarbon Sensor


Exhaust Gas Wash Water Hydrocarbon Sensor


24VDC Hydrocarbon Sensor

Product Description

Hydrocarbon Sensor for Exhaust Gas Wash Water Monitoring

The measuring principle is based on the fluorescent properties of PAHs. Mineral oils rich in aromatic content will fluoresce when illuminated with ultraviolet light. The intensity of this fluorescence depends on the polyaromatic hydrocarbon (PAH) content of the oil. Typical oils that fluoresce include fuel oil, crude oil, hydraulic oil, and transformer oil. Each oil has its unique fluorescence intensity resulting from its specific PAH content. PAHs are integral parts of most mineral oil products and are a very specific indicator of oil contamination in water bodies and process water.

Product Introduction

Desun Uniwill PAH Measurement Sensors, designed for detecting Polycyclic Aromatic Hydrocarbons, is a cutting-edge device revolutionizing environmental monitoring. PAHs are organic pollutants with diverse sources, emphasizing the critical need for real-time monitoring to control pollution and assess associated risks effectively.


Desun Uniwill Online PAHs (Polycyclic Aromatic Hydrocarbons) Sensor works in the measuring principle of UV fluorescence, it’s more sensitive and specific than the conventional infrared scattering or absorption methods. This makes it possible to determine the smallest traces of PAHs, e.g. in drinking water, but also in cooling water condensates. It has an RS-485 interface that allows easy and fast sensor configuration via Modbus.


PAH Monitoring Sensors



-PAH Measurement Range: 0 – 1000 ppb (µg/L)
-Equipped with an RS-485 interface that enables simple and quick sensor configuration via Modbus
-In situ measurement, no sampling no reagents
-Installations on the inlet and outlet of the scrubber
-Fluorescence probe for PAH/Oil in water measurements
-Corrosion-free Housing
-Detects oil in water through UV fluorescence
-Real-time in-line measurement
-Simple installation and operation


Application Areas of PAH Sensor

Monitoring drinking water resources
Biological wastewater treatment plant protection
Control of industrial discharges and wastewater
PAH measurement in processed water
Protection of membranes in desalination plants
Control of washing water from purifiers on ships
Marine ship Scrubber wash water monitoring
Pipeline monitoring
Bilge water monitoring
Outflow detection in cooling condensates
Environmental monitoring
Wastewater monitoring
Fuel detection in natural waters and sewage plants
Gas Station/Refinery
Bottom Water Monitoring
Smoke Scrubbing
Desalination device
Airport Monitoring
Maritime EGCS (Scrubber)
Exhaust gas cleaning systems (EGCS) wash water monitoring
Supervision and online control of fresh water in waterworks and boreholes
Monitoring of wastewater in industrial and municipal sewage works
Crude oil detection, and leakage control at offshore oil pipelines
Exhaust gas wash water monitoring


Technical parameters
Product Name
PAH Sensor PAHs Analyzer
Principle Fluorescence Method Fluorescence Method
0~500 ppb
0~1000 ppb
( Can be customized)
0~50 ppb
0~100 ppb
0~1000 ppb
( Can be customized)
Detection Limit 5ppb 0.5ppb
±5%FS ±3%FS
Response time <10s <10s
Minimum test intervals 5s 5s
RS-485, Modbus RTU RS-485, Modbus RTU
Power supply 12-24VDC 12-24VDC
Power consumption 1.5W 1.5W
Dimensions (L x Ø)
Φ160mm*38mm 142mm*96mm*45mm
Weight 900g 720g
Protection Level Ip68 Ip68
Storage temperature -20-80℃ -20-80℃
working temperature 0~ 50°C 0~ 50°C
Inflow velocity
0.1-10 m/s

0.1-10 m/s
























There are two measurement modes to choose from:


1. Analyzer mode,

Combine the instrument with a flow-through tank to lead the liquid into the glass tube for measurement.


2. Probe mode,

Online measurement of PAH (oil) content in water by UV fluorescence method with fast response and high sensitivity.

No need for sampling and sample preparation, no reagents.

Can be connected to supporting instrumentation, and can achieve 4-20mA analog output, to achieve a variety of control methods.


The field of application ranges from petrochemistry, and leakage detection in cooling and wastewater streams to environmental monitoring.


Desun Uniwill specializes in the design, development, and manufacture of a range of water quality monitoring sensors and controllers. PAH sensors are our latest sensors and are mainly used in marine exhaust gas cleaning systems.


Our main products include dissolved oxygen sensor, PH sensor, ORP sensor, turbidity sensor, conductivity sensor, COD sensor, ammonia nitrogen sensor, sludge concentration sensor, chlorophyll sensor, blue-green algae sensor, oil in water sensor, PAH Sensor, nitrate sensor, multi-parameter water quality sensor, etc. With an experienced and professional team, we have exported our products to more than 30 countries and regions worldwide, especially in South America and Southeast Asia.


Contact Details

Phone Number : +8618182429986

WhatsApp : +8618182429986