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Digital RS485 Oil Water Quality Sensor for Sewage Water
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Digital RS485 Oil Water Quality Sensor for Sewage Water

The oil-in-water sensor monitors the oil content in water by ultraviolet fluorescence method. It quantitatively analyzes the concentration of oil in water based on the fluorescence intensity emitted by petroleum and its aromatic hydrocarbon compounds and compounds containing conjugated double bonds after absorbing ultraviolet light. Aromatic hydrocarbons in petroleum can produce fluorescence under ultraviolet light excitation, and the value of oil in water can be calculated based on the intensity of the fluorescence.
The product is widely used in real-time online monitoring of oil in surface water, groundwater, oceans, water sources, etc.
Model DOIL-700
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Detail

Measurement Principle

This Oil-in-Water Sensor Online Analyzer adopts ultraviolet fluorescence technology for oil content monitoring. Petroleum aromatic hydrocarbons and their conjugated double bond compounds absorb ultraviolet light and emit fluorescence; the analyzer quantitatively calculates water oil concentration based on the intensity of this fluorescence, enabling accurate oil-in-water detection.

Key Features

  • Advanced optical monitoring: Reagent-free, no dilution required, and supports long-term stable operation.

  • Short response time for continuous, real-time measurement.

  • LED light source: Compact size, low power consumption, and easy on-site integration.

  • Equipped with automatic cleaning function to reduce maintenance workload.

  • Unique optical and electronic filtering technology eliminates ambient light interference.

  • Wide operating range and high detection sensitivity.

  • All-metal casing design for sturdiness and durability.

Applications

  • Real-time online oil-in-water monitoring for water treatment systems and wastewater discharge in industrial sectors (petroleum, chemical, electric power, etc.).

  • Real-time online oil-in-water monitoring for environmental water bodies (surface water, groundwater, seawater, drinking water) and pollution source emission control.


Specifications

Specifications

Details

Measurement Range

0.01~50mg/L

Measurement Accuracy

Less than ±10% or 0.3mg/L of measured value, maximax criterion

Repeatability

±5%

Resolution

0.01mg/L

Pressure Range

≤0.1Mpa

Materials

Main Body: SUS316L; Cable: PUR

Power Supply

9~36VDC

Communication Protocol

MODBUS RS485

Storage Temperature

-15-50℃

Operating Temperature

0~45(not freeze)

Weight

1.5KG

Level of Protection

IP68/NEMA6P

Cleaning Method

Automatic scraping and brushing cleaning

Cable Length

Standard: 10 m, the maximum can be extended 100m


FAQ – Frequently Asked Questions


1. Where are your products manufactured?

Our products are proudly designed and manufactured in China, following international quality standards and certified processes.


2. Can you provide OEM/ODM services for international clients?

Yes, we offer customized solutions and private labeling to meet your brand’s needs worldwide.


3. Are your products compliant with international safety and quality standards?

Absolutely. Our products are tested to meet CE, RoHS, and other international certifications.


4. How do you handle shipping and delivery for overseas orders?

We cooperate with major international couriers to ensure fast and reliable delivery to your location.


5. Can I get product samples before placing a large order?

Yes, we provide samples so you can evaluate product quality before committing to bulk orders.


6. What is the typical lead time for production and delivery?

For standard products, we usually ship within 5–7 days after order confirmation. Customized products may take slightly longer.


7. How do you support clients after the purchase?

We offer 24/7 technical support, product guidance, and warranty service to ensure smooth operation.


8. Do you provide support for international clients after purchase?

Yes, we offer remote technical assistance, manuals in English, and prompt solutions to any issues, ensuring smooth use worldwide.


9. How can I place an order if I am located overseas?

You can contact our sales team directly via email or website inquiry. We provide professional guidance throughout the ordering process.


10. Why should I choose your company over other suppliers in China?

We combine over 30 years of manufacturing experience, advanced technology, strict quality control,

and global customer service to deliver reliable, high-quality solutions.


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