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Liquid Analysis
Portable Dissolved Oxygen Meter
In wastewater treatment, aquaculture, environmental monitoring, and laboratory analysis, accurate dissolved oxygen (DO) measurement directly impacts biological process efficiency, energy optimization, and regulatory compliance.
The Instrava Portable Dissolved Oxygen Meter is engineered to provide high-precision DO measurement with both membrane and optical fluorescence probe options, allowing users to select the most suitable technology based on maintenance strategy and operational environment.
With triple compensation (temperature, salinity, altitude), upgraded sealed protection design, and stable ±3% FS accuracy, this instrument ensures reliable performance across varying environmental conditions. Designed for field engineers, plant operators, and laboratory technicians, it balances measurement stability, ease of use, and long-term cost efficiency.
Liquid Analysis Description
Portable Dissolved Oxygen Meter Typical Application Scenarios
Municipal and industrial wastewater treatment plants
Aeration tank and biological process monitoring
Aquaculture and fishery oxygen management
Surface water and environmental field surveys
Laboratory water quality analysis
Remote or outdoor monitoring requiring portable operation
The instrument supports both routine process control and mobile environmental inspections.
Portable Dissolved Oxygen Meter Engineering Advantages
Dual Technology Options
JE8803 (Membrane Method): Traditional electrochemical measurement with reliable performance.
JE8803A (Optical Fluorescence Method):
No membrane cap
No electrolyte filling
No polarization required
Reduced calibration frequency
Resistant to H₂S, heavy metals, oils, acids, and alkalis
Provides flexibility for procurement strategies and operational environments.
Triple Compensation for Precision Control
Dissolved oxygen is influenced by temperature, salinity, and altitude. This meter integrates:
Automatic Temperature Compensation (ATC)
Salinity Compensation (0–42 ppt)
Altitude Compensation (0–3500 m)
Ensuring stable and accurate readings across variable site conditions.
Stable & Durable Construction
Upgraded sealed body with triple protection structure
Effectively prevents moisture and water ingress
Large LCD display (41 × 50 mm) with backlight
Compact ergonomic design (70 × 35 × 167 mm)
Optimized for field durability and ease of handling.
User-Oriented Operation
100% air saturation calibration
99 data manual storage records
Automatic shutdown after 10 minutes of inactivity
Temperature unit switch (°C / °F)
High-precision probe with 0.1 mg/L resolution
Supports efficient workflow and reduces operational errors.
Portable & Energy Efficient
Powered by 4 × 1.5V AAA batteries
Lightweight handheld structure
Approx. 3.5 m probe cable for flexible measurement
Ideal for on-site deployment and extended field operation.
Liquid Analysis Parameter
Portable Dissolved Oxygen Meter Technical Specifications
Measurement Parameters
| Parameter | Membrane Method | Optical Fluorescence Method |
|---|---|---|
| Measuring Range | 0.0–30.0 mg/L | 0.0–20.0 mg/L |
| Saturation Range | 0–199% | 0–199% |
| Resolution | 0.1 mg/L | 0.1 mg/L |
| Accuracy | ±3% FS | ±3% FS |
| Calibration | 100% air saturation | 100% air saturation |
Temperature Parameters
| Parameter | Specification |
|---|---|
| Temperature Range | 0.0–60.0°C |
| Resolution | 0.1°C |
| Accuracy | ±0.5°C |
| Temperature Unit | °C / °F Switchable |
| Automatic Temperature Compensation | Supported |
Compensation & Storage
| Parameter | Specification |
|---|---|
| Salinity Compensation | 0–42 ppt |
| Altitude Compensation | 0–3500 m |
| Data Storage | 99 manual records |
Mechanical & Electrical Parameters
| Parameter | Specification |
|---|---|
| LCD Size | 41 × 50 mm (Backlit) |
| Probe Cable Length | Approx. 3.5 m |
| Power Supply | 4 × 1.5V AAA batteries |
| Instrument Size | 70 × 35 × 167 mm |
| Automatic Shutdown | 10 minutes inactivity |
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.
From an engineering standpoint, the membrane model (JE8803) is cost-effective and suitable for routine field testing with standard maintenance schedules.
The optical fluorescence model (JE8803A) is designed for higher stability and lower lifecycle cost. It requires:
No membrane replacement
No electrolyte refilling
No polarization time
Less frequent calibration
For continuous field deployment, aquaculture farms, wastewater plants, or environments containing H₂S, heavy metals, oil, or corrosive media, we recommend the optical version for operational stability and reduced downtime.
Dissolved oxygen concentration is directly influenced by temperature, salinity, and altitude. Instrava integrates triple compensation mechanisms:
Automatic Temperature Compensation (ATC)
Salinity Compensation (0–42 ppt)
Altitude Compensation (0–3500 m)
This design ensures reliable DO readings across freshwater, seawater, plateau regions, and industrial process environments.
Membrane Model:
Periodic membrane cap replacement
Electrolyte refill
Calibration after maintenance
Optical Model:
No membrane
No electrolyte
No polarization
Resistant to chemical interference
For procurement managers evaluating total cost of ownership (TCO), the optical model significantly reduces maintenance labor and consumables over time.
Yes. With measurement ranges up to:
0.0–30.0 mg/L (membrane)
0.0–20.0 mg/L (optical)
0–199% saturation
The device supports applications including:
Aquaculture pond oxygen management
Municipal wastewater treatment
Environmental field inspection
Laboratory water analysis
Industrial process monitoring
Its ±3% FS accuracy and 0.1 mg/L resolution meet most field compliance and operational control requirements.
The upgraded sealed housing features a triple-protection structure to prevent moisture and water ingress. Combined with:
Backlit large LCD (41×50 mm)
3.5 m probe cable
10-minute auto shut-off
Battery-powered portability
It is optimized for on-site and mobile measurement scenarios.
Yes. The meter allows manual storage of up to 99 data records, supporting:
Field inspection documentation
Compliance sampling records
Operational adjustment logs
For engineering teams that require traceability but do not need continuous online logging systems, this provides practical, lightweight data retention functionality.
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.
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