Water Quality Oil in Water Sensor, 0~40 mg/L

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SKU: SUCH-WQS-406

$1,825.39

● 0~40 mg/L ● 0.01 mg/L resolution ● RS485, 4-20mA ● Fluorescence method

Output Signal *
Self Cleaning *

Qty:

🚚 Free shipping

🕒 Delivery date: 6-12 days

🔁 30-day Returns

Overview
Specs
Application
FAQ
Reviews

Overview

The professional oil-in-water sensor has a high-precision detection range of 0–40 mg/L with a resolution of 0.01 mg/L and an accuracy of ±3%, enabling stable monitoring of trace oil contamination. The water quality sensor supports RS485 and 4–20 mA output for easy integration into monitoring platforms. Constructed with 316L stainless steel housing and IP68 protection rating, it is designed for long-term submerged operation.

Feature

Oil in water sensor feature

Water quality oil-in-water sensors utilize advanced UV LED light sources, delivering high stability, extended lifespan, and minimal drift for reliable, precise long-term monitoring.
These sensors feature simple installation and user-friendly operation, supporting RS-485 (Modbus/RTU) and 4-20mA outputs for seamless integration into various water quality monitoring systems.
The AC-driven design of the SUCH oil-in-water sensor effectively filters out natural light interference, guaranteeing consistent readings.
The entire unit operates rapidly, stably, and is easy to maintain, making it a high-quality online water quality monitoring sensor that combines performance with reliability.

Dimension (unit: mm)

No Cleaning Brush

Oil in water sensor dimension

With Cleaning Brush

Oil in water sensor with cleaning brush dimension

Wiring Diagram

Function	Line Color	Specifications
Power Supply	Red	Power Supply (12~24VDC)
Power Supply	Black	GND
Communication	Blue	485-A
Communication	White	485-B
Communication	Yellow	Current Output (Optional, leave floating if not used)

Note

Installation Distance Requirements: Maintain a minimum clearance of 2 cm from side walls and 10 cm from the bottom.

Wiring Instructions: Considering cables may be submerged in water (including seawater) or exposed to air for extended periods, all wiring connections must be waterproofed. User cables should possess adequate corrosion resistance.

Troubleshooting and Solutions

Issue	Possible Causes	Solution
The operating interface cannot connect or display measurement results	Controller connection error with cable	Reconnect the controller and cables
	Cable malfunction	Please contact us
Measurement values are excessively high, excessively low, or persistently unstable	Foreign object adhering to sensor window	Clean the sensor window surface

Specs

Measurement Principle	Fluorescence method
Range and Resolution	0~40 mg/L
Resolution	0.01 mg/L
Accuracy	±3% of reading
Response Time	T90<30s
Min Detection Limit	0.4 mg/L
Calibration Method	Two-point calibration
Cleaning Method	None/with cleaning brush (optional)
Temperature Compensation	Automatic temperature compensation (Pt1000)
Output Method	RS485 (Modbus RTU), 4–20 mA (optional)
Storage Temperature	-5 to 65°C
Operating Conditions	0 to 50°C, ≤0.2 MPa
Housing Material	316L
Mounting Method	Submersible installation, 3/4 NPT
Power Consumption	0.2W @ 12V
Power Supply	12 to 24V DC
Protection Rating	IP68

Application

Monitoring of Oily Wastewater

Oil Spill in Groundwater

Ship Engine Room Waste Oil

FAQ

Q1: Working principle of oil-in-water sensors ❯

Oil-in-water sensors utilize the characteristic that soluble oils exhibit absorption and emission peaks in their spectra. When monochromatic light matching the absorption peak of soluble oils is irradiated into water, the soluble oils absorb the monochromatic light energy and release monochromatic light at another wavelength corresponding to their emission peak. The intensity of light emitted by the soluble oils is directly proportional to their concentration in the water.

Q2: What is the primary function of an oil-in-water sensor? ❯

Oil-in-water sensors detect oil content in water in real time, identifying different forms such as emulsified oil, dispersed oil, and dissolved oil. This enables users to monitor water quality changes and prevent pollution spread. These sensors are widely used in industrial wastewater, oilfield produced water, and ship discharge monitoring to ensure water quality meets environmental discharge standards.

Q3: Can oil-in-water sensors be used outdoors or in harsh environments? ❯

Most oil-in-water sensors feature an IP68 or equivalent protection rating, enabling long-term submerged operation and adaptability to complex environments like sewage or seawater. Their corrosion-resistant structural design ensures stable performance in demanding settings such as mining sites and chemical plants.

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Water Quality Oil in Water Sensor, 0~40 mg/L

Feature

Dimension (unit: mm)

Wiring Diagram

Troubleshooting and Solutions

Monitoring of Oily Wastewater

Oil Spill in Groundwater

Ship Engine Room Waste Oil

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