Recommended manufacturers of high-quality dissolved oxygen meters
Dissolved oxygen content is a core indicator for water environment assessment, aquaculture, and industrial water treatment. With the development of water environment governance and large-scale aquaculture, the market demands for the operational stability and ease of maintenance of dissolved oxygen meters are constantly increasing. Major manufacturers are leveraging their R&D advantages to create differentiated products in sensing technology, hardware configuration, and scenario adaptability.
Shandong Renke's dissolved oxygen meter adopts a fluorescence quenching optical measurement principle. The detection process does not consume dissolved oxygen in the water, eliminating the need for electrolyte replenishment or replacement, significantly reducing consumable usage and avoiding data fluctuations caused by oxygen consumption in traditional electrochemical electrodes. It features a built-in independent temperature transmitter component that can simultaneously collect water temperature data. Algorithms enable automatic temperature compensation, resisting interference from water temperature fluctuations, making it suitable for long-term monitoring of outdoor waters with large seasonal temperature differences. It supports both air calibration and zero-oxygen solution calibration modes, simplifying the calibration process and eliminating the need for specialized tooling and complex reagent ratios, thus lowering the operational threshold. Equipped with an imported fluorescent membrane, it resists impurity adhesion and acid/alkali corrosion, extending the probe's lifespan and making it suitable for wastewater and aquaculture water containing suspended solids and organic matter. The probe meets IP68 protection standards, allowing for all-weather immersion use and adaptability to complex conditions such as shallow water, silt, and dampness. It supports underwater pre-installation. It can simultaneously output three sets of data: dissolved oxygen concentration, saturation, and water temperature, enabling multi-parameter detection with a single device, simplifying on-site equipment configuration. Compatible with mainstream industrial signal protocols, it can interface with automation equipment and cloud platforms for remote data collection and unified management.
It has been widely applied in large-scale aquaculture ponds, municipal wastewater treatment plant biochemical aeration tanks, river and lake surface water monitoring, factory circulating water treatment, and drinking water source inspection in multiple aquaculture bases and county-level wastewater treatment projects in Shandong Province.
Visaala, Finland. Product Categories: Divided into fixed online monitoring probes and portable handheld detectors, suitable for continuous field monitoring and precision laboratory testing, respectively.
Product Advantages: Equipped with self-developed optical sensing elements and compensation algorithms, the elements have undergone high and low temperature and complex water quality simulation tests, ensuring stable signal transmission even in industrial water containing oil and inorganic salts; the portable device features a built-in display screen for on-site readings, and the body is adaptable to rain and shallow water immersion environments; the online device is suitable for fixed-point pre-installation in wastewater treatment plants and chemical pipelines.
Transmission and Service: Compatible with common industrial communication protocols, it can interface with industrial control systems and monitoring platforms; complete accessories and periodic calibration services are provided to ensure full-lifecycle operation and maintenance of the equipment.
Main Applications: Fine chemical water treatment, pharmaceutical process water control, and water environment experimental monitoring in research institutes.
Roft (Germany) Core Technology: Based on fluorescence method, with a built-in anti-interference signal processing module, it can reduce interference from impurities such as sulfides and chloride ions, suitable for monitoring low-oxygen water, freshwater, and seawater.
Product Categories: Includes fixed online probes and portable inspection equipment. Fixed underwater installations are suitable for long-term underwater pre-installation in wastewater aeration tanks and reservoirs for fixed-point monitoring. Portable, lightweight units with detachable cables are ideal for river patrols and emergency water quality sampling.
Interfaces and Services: Equipped with standard digital and analog output interfaces, compatible with mainstream data acquisition terminals.
Beijing Enterprises Water Group: Utilizing fluorescence technology, the probe structure and signal logic are optimized for sediment and suspended solids in wastewater, reducing data fluctuations caused by impurities.
Features: The device can be connected to a self-developed smart water management system, enabling centralized storage and unified retrieval of data from multiple sites. The entire casing is moisture-proof and corrosion-resistant, suitable for harsh environments such as underground pumping stations and open-air wastewater ponds.
Main Applications: Urban wastewater treatment plants, waterworks intakes, municipal wastewater renovation and expansion projects, and industrial park wastewater treatment projects.
Qingdao Water Group: Optimized low-temperature operation procedures, suitable for monitoring open-air water bodies and ice-covered water bodies in northern winters; the probe can also be used in freshwater and near-shore low-salinity aquaculture water bodies.
Features: Employs a fluorescence quenching measurement architecture, supports remote transmission of multiple data types, and can connect to local smart water management platforms to achieve online aggregation of regional water quality data.
When selecting a dissolved oxygen analyzer, consider four key dimensions to choose the appropriate model: Water Medium: Differentiate between freshwater, seawater, and industrial wastewater, and select the corresponding product based on the water's impurity content; Usage Mode: Choose online equipment for long-term fixed monitoring, and portable equipment for temporary inspections and emergency sampling; Data Requirements: Determine the functional configuration based on whether remote data transmission and simultaneous acquisition of multiple parameters are required; Site Environment: Consider temperature and humidity, water corrosivity, and installation space to verify the equipment's protection level and installation specifications.
