Online Dissolved Oxygen Sensors: Technology and Applications

2025.02.07
Erun Environmental Protection

Online dissolved oxygen sensors play a vital role in today's environmental protection and industrial processes.These sophisticated instruments are used to monitor dissolved oxygen levels in water bodies in real time and are irreplaceable for maintaining healthy water quality, optimising production processes and protecting the ecosystem.In this paper, we will discuss the technical characteristics of on-line dissolved oxygen sensors and their wide range of applications.


Erun Environmental Dissolved Oxygen Monitor


Technical characteristics


1. Highly accurate measurement: Modern on-line dissolved oxygen sensors use advanced electrochemical or optical technology to achieve accurate dissolved oxygen concentration detection.Among them, optical sensors based on the fluorescence quenching principle are favoured for their fast response, long-term stability and low maintenance requirements.These sensors determine the amount of oxygen in the water by measuring the change in the amount of light of a specific wavelength hitting the sensing membrane.


2. Intelligent function: With the development of Internet of Things (IoT) technology, online dissolved oxygen sensors are gradually integrated with intelligent data processing capabilities.They are capable of automatic calibration, self-diagnostics, and support remote monitoring and data analysis.This not only improves operational efficiency, but also provides users with easy access to data.


3. Environmental adaptability: In order to adapt to a variety of complex monitoring environments, modern sensor design takes into account the selection of corrosion-resistant materials, a wide range of operating temperatures, and water and dust resistance.For example, certain high-end models can operate stably under extreme conditions, catering for needs ranging from laboratory research to outdoor field monitoring.


4. Low maintenance costs: Compared to traditional sensors, online DO sensors reduce the need for frequent calibration and reagent replacement.Some models are equipped with a self-cleaning device that prevents biological contamination and sediment accumulation, further reducing maintenance frequency and costs.


Areas of application


1. Water treatment and wastewater treatment: In water treatment facilities, dissolved oxygen levels are a key indicator for assessing water quality.By monitoring the dissolved oxygen concentration in real time, the operator can adjust the amount of aeration in a timely manner to ensure the effective degradation of microorganisms and improve treatment efficiency.


2. Aquaculture: Dissolved oxygen is essential for the survival of fish and other aquatic organisms.Online dissolved oxygen sensor can help farmers to accurately control the water quality conditions, prevent fish deaths due to lack of oxygen, and safeguard the benefits of aquaculture.


3. Environmental protection: The dissolved oxygen content of natural water bodies such as rivers and lakes directly reflects their ecological health.Long-term monitoring using online dissolved oxygen sensors helps scientists to understand the trend of ecosystem changes and formulate effective protection strategies.


4. Industrial process control: Many industrial processes rely on accurate DO management, such as beer brewing, food processing and other industries.The instant feedback provided by online dissolved oxygen sensors helps companies optimise their processes and improve product quality.


In conclusion, on-line dissolved oxygen sensors have become an indispensable part of modern environmental monitoring and industrial production due to their excellent technical characteristics and wide applicability.Erun environmental protection dissolved oxygen detector with high precision and fast detection, can consult customer service.

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