Y504-A Online Optical Dissolved Oxygen Sensor
Yosemitech's ODO series online optical dissolved oxygen sensors incorporate the latest generation of fluorescence lifetime technology. This advanced optical sensor technology provides precise dissolved oxygen (DO) monitoring without signal drift or flow limitations. The design eliminates the need for electrolyte solution, reducing maintenance requirements. Additionally, the sensor is equipped with a build-in temperature sensor that enables automatic temperature compensation to ensure measurement accuracy under varying conditions. The DO sensor outputs a MODBUS/RS-485 digital signal for easy integration.
- Digital sensor with RS-485 output and MODBUS protocol support;
- Utilizes optical sensor technology for precise dissolved oxygen (DO) monitoring, ensuring no signal drift and eliminating flow limitations;
- Features excellent anti-interference capabilities, significantly reducing maintenance costs as no electrolyte replacement is required;
- All calibration data is stored directly in the sensor, enabling on-site installation and immediate use.
| Name | Online Optical Dissolved Oxygen Sensor |
| Model | Y504-A |
| Measuring principle | Fluorescence method |
| Range | 0-50mg/Lor0-500% Saturation |
| Accuracy | 0-20mg/L：±1%or±0.2mg/L ＞20mg/L：±5%or±0.6mg/L |
| Temperature range | 0-50℃ |
| Maximum water depth | 60m |
| IP range | IP68 |
| Interface | RS-485，MODBUS protocol |
| Power supply | 0.1W（ DC 6-24V，>50mA ） |
| Installation | G3/4 thread, immersion installation |
| Size | Φ26mm*187mm |
| Cable length | 10 m (default), customizable |
| Calibration | 1-point or 2-point calibration |
| Sensor housing material | Ti |
- Dissolved Oxygen Sensor
- Dissolved Oxygen Sensor Guard
- 10m Cable（default), Customizable
- User Manual
- Delivery Inspection Report
Environmental Monitoring:
They are used to monitor water quality in natural sources like rivers, lakes, oceans, and reservoirs for environmental assessment and conservation.
Aquaculture Industry:
These sensors help in managing dissolved oxygen levels in aquaculture systems to ensure optimal conditions for aquatic organisms.
Wastewater Management:
They are employed in wastewater treatment plants to monitor and regulate oxygen levels in the water, aiding in effective wastewater treatment to meet environmental standards.
Scientific Research:
In laboratory settings, dissolved oxygen sensors are crucial for research in biology, chemistry, and environmental science, enabling scientists to study and analyze oxygen levels in various environments.
Chromophoric Dissolved Organic Matter or Colored Dissolved Organic Matter (CDOM): Both refer to organic matter in water that absorbs strongly in the ultraviolet (UV) spectrum. Fluorescent Dissolved Organic Matter (fDOM) refers to the fraction of CDOM that fluoresces.
A dissolved oxygen sensor is a device used to measure the concentration of oxygen dissolved in a liquid, typically water. These sensors are essential in various fields such as environmental monitoring, water treatment, aquaculture, and industrial processes. They provide critical data for understanding the health and quality of water bodies by measuring the amount of oxygen available to aquatic organisms.
Measuring dissolved oxygen (DO) in water is crucial for several reasons across different fields.
1. Aquaculture:
Fish farms and aquaculture operations rely on stable DO levels to maintain fish health and growth rates. Low DO can lead to fish stress, poor growth, or even mass mortality.
2. Wastewater Treatment:
In treatment plants, DO is monitored to ensure efficient biological processes. Aerobic bacteria in the treatment process require sufficient oxygen to break down organic matter.
3. Predicting Ecosystem Changes:
Regular DO monitoring can serve as an early warning system for ecosystem changes, such as algal blooms or fish kills, allowing for timely interventions.
4. Indicator of Water Quality:
DO levels are a key indicator of the health of aquatic ecosystems. Adequate oxygen levels are essential for the survival of fish and other aquatic organisms. Low DO can lead to hypoxic conditions, which can cause stress or death for aquatic life.
5. Biological and Chemical Studies:
Understanding the oxygen dynamics in water bodies is essential for research in limnology, oceanography, and environmental science. DO levels affect chemical reactions and biological processes in water.
Yosemitech supply one type of Portable Dissolved Oxygen Meter and three types of Optical Dissolved Oxygen Sensors for do measurement and detector in water. Our dissolved oxygen Meters and Sensors provide high-precision measurement and are built to withstand the harshest applications, requiring minimum maintenance and helping you achieve increased efficiency and reduced operating costs.
Dissolved oxygen (DO) is one of the most vital indicators of water quality. High DO levels improve the taste of drinking water, but this can cause corrosion in water pipes. Alternatively, low dissolved oxygen levels below 5.0 mg/L stress aquatic life and creates hypoxic conditions.
Y505-A Dissolved Oxygen Sensor for Aquaculture
1. Adopt fluorescence method
2. Digital sensor, supports RS485, MODBUS protocol
3. No oxygen consumption, no flow limit
If you have any inquiries, please don't hesitate to contact us. We are here to assist you with dedicated service.
Yosemitech optical dissolved oxygen probe provides high accuracy in measuring dissolved oxygen levels, making it an essential tool for aquaculture, environmental monitoring, and aquatic research.
Why choose Yosemitech's Optical Do Sensor?
Advanced Technology: High performance self-developed fluorescent material, no oxygen consumption, no flow limit, no electrolyte.
User-friendly Design: Easy to install and operate, it’s perfect for both seasoned professionals and newcomers to the field.
Durability: Adopting titanium housing. Suitable for withstand harsh environments.
If you are finding a optical dissolved oxygen sensor, Yosemitech is your best choice!
Portable dissolved oxygen meter adopts fluorescence measurement principle. Key features of this device include the absence of oxygen consumption during measurement, no flow rate limitations, no need for preheating, no requirement for electrolyte.
From April 21th to 23rd, 2025, IE Expo China 2025 concluded successfully at the Shanghai New International Expo Centre. As a highly anticipated communication platform in the industry, the exhibition attracted exhibitors, experts, scholars, and industry elites from around the world to gather in Shanghai. Through various forms such as cutting - edge technology displays and high - end forum sharing, it created a professional and forward - looking audio - visual feast for the industry.
Suzhou Yosemite Technology Co., Ltd. ("YOSEMITECH"), which has been deeply involved in the water quality monitoring field for over 11 years, always adheres to the mission of "Water Monitoring Made Simple". YOSEMITECH showcased its self - developed water quality monitoring sensors and instruments at the exhibition. As a manufacturer of water quality monitoring sensors, we had in - depth exchanges with domestic and foreign partners and industry peers during the exhibition. It fully demonstrated its profound expertise in areas such as water quality sensor research and development and intelligent monitoring system integration, and continuously empowered global water quality monitoring scenarios with innovative technologies to promote the efficient and intelligent development of the industry.
