Dissolved Oxygen Sensor for Water Quality, 0~20mg/L

Fluorescence dissolved oxygen sensor for water quality uses the fluorescence method to measure dissolved oxygen in a range of 020 mg/L. The water quality sensor has automatic temperature compensation with a built-in Pt1000 sensor. The sensor outputs data via RS-485 with Modbus/RTU protocol. With low power consumption, two-point calibration, and easy maintenance, ideal for applications such as aquaculture, industrial water treatment, environmental monitoring, and research on natural water bodies.

SKU: CCHN-WQS-DOS

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Delivery date: 6-25 days

Overview

The fluorescence dissolved oxygen sensor measures 0-20 mg/L with automatic temperature compensation, RS-485 output, and low power use. Ideal for aquaculture, water treatment, and environmental monitoring.

Specification

Model	CCHN-RDO-106
Measurement Principle	Luminescence Method
Measurement Range	0~20 mg/L (0~200% Saturation, at 25°C)
Resolution	0.01 mg/L, 0.1°C
Product Accuracy	±2%, ±0.3°C
Temperature Compensation	Automatic (Pt1000)
Output Signal	RS485 (Modbus/RTU)
Operating Conditions	0~50°C, <0.2MPa
Storage Temperature	-5~65°C
Installation Method	Immersion Installation
Cable Length	5 meters (customizable)
Power Consumption	0.2W @12V
Power Supply	12~24VDC
Protection Rating	IP68
Calibration Method	Two-Point Calibration
Sensor Lifespan	1 year (under normal conditions)
Housing Material	POM, ABS, and 316L Stainless Steel

Feature

No Electrolyte Required: Operates without the need for electrolyte or cathodes, ensuring stable and corrosion-free performance.
No Oxygen Consumption: Unaffected by water flow rate, making it suitable for stagnant or dynamic water environments.
Built-in Temperature Sensor: Includes automatic temperature compensation (Pt1000) for accurate readings under varying temperature conditions.
Resistant to Interference: Highly resistant to chemical substances like sulfides, ensuring stable and precise measurements without signal drift.
Fast Response Time: Reacts quickly to changes in dissolved oxygen levels, providing accurate and real-time data.
Low Maintenance: Longer service life and reduced maintenance requirements compared to traditional membrane-based sensors.
Ease of Use: Features a luminescence-based design with simple operation and maintenance, lowering overall operating costs.
Reliable Communication: Supports RS-485 interface with Modbus/RTU protocol for seamless integration into various monitoring systems.
Energy-Efficient and Durable Design: Designed with low-power consumption and anti-interference capabilities for reliable long-term use.

Dimension (Unit: mm)

Dissolved oxygen sensor size

Note: The sensor connector is a male M16-5 pole waterproof connector.

Installation Method

Turbidity sensor for water quality installation method

A	B	C
Sidewall Mount	Top Flange Mount	Pipe Turning Mount
D	E	F
Pipe Turning Mount	Flow-through Mount	Submersible Mount

Application

Tips: How does this sensor compare to traditional membrane-based dissolved oxygen sensors?

Unlike traditional sensors, this fluorescence-based sensor does not require electrolyte solutions or frequent membrane replacement, significantly reducing maintenance efforts and costs. It also has a longer lifespan and is unaffected by water flow or fouling, making it more reliable in long-term monitoring applications. The fluorescence method also provides faster response times and higher accuracy, especially in low-oxygen environments.