Thermal vs Vortex vs Differential Pressure: How to Choose the Right Flow Measurement Technology
Selecting a flow meter is rarely about accuracy alone. In industrial applications, the real challenges include: Variable flow rates Pressure...
- Schedule. Mon - Sat 09.00 - 20.00
Liquid Analysis
Optical Dissolved Oxygen Meter
In environmental monitoring, wastewater treatment optimization, and food or biochemical process control, dissolved oxygen is a key operational variable that directly affects biological stability, product quality, and regulatory compliance.
The Instrava Optical Dissolved Oxygen Meter adopts advanced fluorescence measurement technology, eliminating electrolyte consumption and membrane replacement while delivering 0.01 mg/L high resolution and ±0.3 mg/L accuracy.
Engineered as a handheld intelligent analyzer, it integrates:
✔ Smart result lock
✔ Intelligent alarm system
✔ Salinity & air pressure compensation
✔ IP67 waterproof protection
✔ Dual power supply
✔ Data storage & USB interface
✔ Optional GPS positioning
This is a professional field-grade optical DO analyzer designed for engineers who require precision, durability, and operational efficiency in real working environments.
Liquid Analysis Description
Optical Dissolved Oxygen Meter Application Scenarios
Environmental Protection & Surface Water Monitoring
Continuous monitoring of dissolved oxygen concentration and saturation in rivers, lakes, and reservoirs. Suitable for regulatory compliance and mobile inspection tasks.
Wastewater Treatment Plants
Optimizing aeration systems and biological treatment processes. Accurate DO control improves oxygen transfer efficiency and reduces energy waste.
Biochemical & Laboratory Applications
Stable fluorescence-based measurement ensures reliable oxygen monitoring in controlled research environments.
Food & Drinking Water Monitoring
Applicable for tap water systems and food processing where stable oxygen concentration impacts quality and safety.
Designed for both field deployment and laboratory verification, with rugged portability and intelligent operation support.
Optical Dissolved Oxygen Meter Engineering Advantages
① Fluorescence Optical Measurement – Low Maintenance & High Stability
No electrolyte consumption
No membrane replacement
No oxygen consumption during measurement
Reduced calibration frequency
Strong anti-interference capability
This significantly lowers long-term maintenance cost compared to traditional electrochemical DO meters.
② High-Precision Multi-Parameter Detection
DO Range: 0–20 mg/L
Saturation: 0–200%
Temperature: 0–50°C
Resolution: 0.01 mg/L; 0.01°C
Accuracy: ±0.3 mg/L (DO); ±0.5°C (Temperature)
Supports reliable decision-making in process control applications.
③ Intelligent Compensation System
Automatic temperature compensation
Salinity compensation
Air pressure measurement (50–115 kPa)
One or two-point calibration
Ensures stable measurement across changing environmental and altitude conditions.
④ Smart Operation & Data Management
3.3-inch monochrome LCD display
Backlight display function
Chinese & English interface
Smart alarm system
Result smart lock
Data storage support
USB interface for data transfer
Optional GPS positioning system
Designed to support traceability and regulatory documentation.
⑤ Industrial-Grade Protection & Field Durability
IP67 waterproof and dustproof
Stainless steel optical electrode
Operating temperature: -10–60°C
Relative humidity: 10–85%RH (non-condensing)
Dual power supply (4×AA batteries)
Built for demanding outdoor inspection environments and continuous field monitoring.
Liquid Analysis Parameter
Optical Dissolved Oxygen Meter Technical Specifications
Instrument Specifications
Display Screen: 3.3-inch monochrome LCD
Product Size: 7.87 × 3.98 × 1.42 inch
Product Weight: 420 g
Data Storage: Supported
Language: English / Chinese
Air Pressure Measurement: 50–115 kPa
Protection Grade: IP67
Power Supply: 4 × AA batteries
Operating Temperature: -10–60°C
Relative Humidity: 10–85%RH (No condensation)
Sensor Specifications
Measuring Principle: Fluorescence method
Electrode Material: Stainless steel
DO Range: 0–20 mg/L
Saturation Range: 0–200%
Temperature Range: 0–50°C
Accuracy: ±0.3 mg/L (DO); ±0.5°C (Temp)
Resolution: 0.01 mg/L; 0.01°C
Calibration: One or two-point calibration
Storage & Transportation Conditions
Temperature: -15–65°C
Relative Humidity: 5–85%RH (No condensation)
Instrava OEM/ODM
Instrava Engineering & Customization Support
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.
Fluorescence probes measure DO without consuming oxygen, avoiding polarization and electrolyte maintenance. This provides stable, fast, and accurate readings even under variable flow or aeration conditions, reducing downtime and operational cost.
The meter combines IP67 waterproof protection, lightweight design (420g), long probe cable, and portable form factor with automatic temperature, salinity, and air pressure compensation, ensuring consistent performance indoors or on-site.
It supports -10–60°C operation, 10–85% RH, altitude compensation, and has built-in data storage & backlight display. These features allow engineers to obtain accurate, reproducible readings in challenging environments.
Yes. It includes manual data logging, USB interface for export, and optional GPS tagging. Engineers can track dissolved oxygen trends over time, supporting compliance and process optimization.
Unlike membrane DO meters, fluorescence sensors require minimal maintenance, no electrolyte filling, no membrane replacement, and calibration is infrequent, significantly lowering long-term operational cost.
Dissolved oxygen readings are sensitive to these factors. This meter provides automatic temperature compensation, manual salinity adjustment, and air pressure compensation (50–115 kPa), ensuring precise, reliable results across diverse water bodies.
Why Choose Instrava
By choosing Instrava, you gain a partner with a deep understanding of industrial applications and the expertise to meet today’s operational challenges.
Our role extends beyond products—we support your success through dependable solutions and long-term commitment.
Engineering-Driven Innovation
Innovation at Instrava is guided by real industrial requirements. We continuously refine our technologies to address evolving operational challenges, ensuring practical and reliable performance in demanding environments.
Application-Specific Customization
We provide engineering-level customization to match specific process conditions. From measurement range and materials to output signals and installation options, our solutions are configured to fit real applications.
Proven Quality and Reliability
Quality and reliability are fundamental to every Instrava product. Manufactured under strict quality control and thoroughly tested, our instruments deliver accurate, stable, and long-term performance.
Global Capability with Local Support
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
Comprehensive Product Portfolio
Our broad portfolio of measurement and control instruments enables us to address a wide range of industrial needs, providing integrated solutions from a single, reliable source.
Partner-Oriented Engineering Support
We work closely with our partners from technical consultation to after-sales support. Our focus is on delivering solutions that create lasting value and support long-term operational success.
Oval Gear Flow Meter: Why It Still Dominates High-Viscosity Flow Measurement in Modern Automation
The Quiet Persistence of Oval Gear Flow Meters In an era where smart sensors, digital twins, and AI-driven instrumentation dominate...
Portable Ultrasonic Flow Meters – Accurate Industrial Flow Measurement
Portable Ultrasonic Flow Meters – Accurate Industrial Flow Measurement | Instrava Portable Ultrasonic Flow Meters Overview Portable ultrasonic flow meters...
