Green dissolved oxygen meter, showing oxygen concentration and temperature, suitable for water quality testing

Dissolved Oxygen Meter for Water

n biological treatment processes, aquaculture management, environmental compliance, and laboratory water analysis, dissolved oxygen (DO) directly determines process stability, energy efficiency, and ecological safety.

The Instrava Dissolved Oxygen Meter for Water is engineered to provide high-precision, field-ready DO measurement with dual-technology options — membrane method and optical fluorescence method — allowing engineering teams to select the optimal balance between initial investment and long-term maintenance strategy.

With large digital display, high-accuracy probe design, triple compensation (temperature, salinity, altitude), and 99-point data storage, this instrument ensures stable performance across freshwater, seawater, and variable-altitude environments.

Designed for operational reliability and field efficiency, it delivers dependable measurement performance under real industrial conditions.

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Liquid Analysis Description  

Dissolved Oxygen Meter Typical Application Scenarios

  • Municipal wastewater treatment plant aeration control

  • Industrial biological process monitoring

  • Aquaculture pond oxygen management

  • Environmental surface water inspection

  • Laboratory water quality testing

  • Field sampling in remote or high-altitude areas

This device supports both routine operational control and mobile compliance verification tasks.

Dissolved oxygen meter for water quality testing, showing dissolved oxygen concentration and temperature, with automatic temperature compensation feature
Laboratory dissolved oxygen meter, displaying oxygen concentration and temperature values on the screen

Dissolved Oxygen Meter Engineering Advantages

Dual Measurement Technologies for Flexible Deployment

Membrane Method Model

  • Measuring range up to 0.0–30.0 mg/L

  • Proven electrochemical measurement principle

  • Suitable for routine industrial and environmental testing

  • Complete accessory kit included for maintenance

Optical Fluorescence Method Model

  • Reduced routine maintenance

  • No electrolyte handling

  • Stable long-term performance

  • Ideal for users prioritizing low operational intervention

Procurement teams can select based on lifecycle cost considerations and site maintenance capabilities.

Triple Compensation for Measurement Integrity

Dissolved oxygen concentration is highly influenced by environmental conditions. Instrava integrates:

  • Automatic Temperature Compensation (ATC)

  • Salinity Compensation (0–42 ppt)

  • Altitude Compensation (up to 3500 m for membrane model)

This ensures consistent accuracy in:

  • Seawater applications

  • Plateau regions

  • Variable seasonal conditions

Measurement accuracy remains stable at ±3.0% FS across operating ranges.

Large Display & Field-Ready Ergonomics

  • Large LCD screen (38 × 54 mm) with backlight

  • Clear numeric visualization for low-light environments

  • Compact handheld body (70 × 30 × 169 mm)

  • Approx. 3.5 m probe cable for flexible measurement positioning

  • Powered by 4 × AAA batteries for portable operation

Auto shut-off function improves energy efficiency during field deployment.

Reliable Data Recording & Compliance Support

  • Manual storage of up to 99 data records

  • 100% air saturation calibration

  • Temperature unit switching (°C / °F)

Suitable for:

  • Field documentation

  • Operational logs

  • Regulatory inspection support

Liquid Analysis Parameter  

Dissolved Oxygen Meter Technical Specifications

Membrane Method Model

Dissolved Oxygen

  • Range: 0.0–30.0 mg/L

  • Resolution: 0.1 mg/L

  • Accuracy: ±3.0% FS

  • Calibration: 100% air saturation

Temperature

  • Range: -5.0–60.0°C

  • Resolution: 0.1°C

  • Accuracy: ±0.5°C

  • Unit: °C / °F switchable

  • Automatic Temperature Compensation: Supported

Compensation & Storage

  • Salinity Compensation: 0–42 ppt

  • Altitude Compensation: 0–3500 m

  • Data Storage: 99 manual records

Operational Parameters

  • LCD Size: 38 × 54 mm (Backlit)

  • Probe Cable Length: Approx. 3.5 m

  • Power Supply: 4 × AAA batteries

  • Auto Shut-off: 1 hour inactivity

  • Dimensions: 70 × 30 × 169 mm

Standard Configuration
Instrument / Probe / Membrane caps / Electrolyte / Syringe / Screwdriver / Gauze / Batteries / Manual / Certificate / Carrying case

Optical Fluorescence Method Model

Dissolved Oxygen

  • Range: 0.0–15.0 mg/L

  • Saturation Range: 0.0–119.9%

  • Resolution: 0.1 mg/L

  • Accuracy: ±3.0% FS

  • Calibration: 100% air saturation

Temperature

  • Range: 0.0–50.0°C

  • Resolution: 0.1°C

  • Accuracy: ±0.5°C

  • Unit: °C / °F switchable

  • Automatic Temperature Compensation: Supported

Compensation & Storage

  • Salinity Compensation: 0–42 ppt

  • Altitude Compensation: 0–1000 m

  • Data Storage: 99 manual records

Operational Parameters

  • LCD Size: 38 × 54 mm (Backlit)

  • Probe Cable Length: Approx. 3.5 m

  • Power Supply: 4 × AAA batteries

  • Auto Shut-off: 30 minutes inactivity

  • Dimensions: 70 × 30 × 169 mm

Standard Configuration
Instrument / Optical probe / AAA batteries / Manual / Certificate / Carrying case

Instrava Engineering Commitment

Instrava designs portable analytical instruments with a focus on:

  • Measurement stability under real operating conditions

  • Practical compensation algorithms

  • Field durability

  • Reduced operational complexity

This dissolved oxygen meter series is optimized for engineers who require reliable field performance, predictable maintenance cycles, and measurable operational control.

Instrava OEM/ODM  

Tailored Sourcing & Customization: Getting You the Exact Product You Need

As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.

Finding the right product in a massive supply chain can be challenging. That is where we step in.

As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.

How We Customize to Fit Your Procurement Needs

  • For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.

  • For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.

  • For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.

Why Partner with Us for Custom Sourcing?

  • One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.

  • Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.

  • Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.

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Related Product Recommendations  

From a procurement and lifecycle perspective:

  • Membrane model is cost-effective upfront and suitable for facilities with structured maintenance routines.

  • Fluorescence model reduces maintenance workload, eliminates electrolyte handling, and minimizes routine servicing.

If your operation prioritizes lower initial investment, the membrane model is appropriate.
If you prioritize long-term stability, reduced downtime, and lower maintenance intervention, the fluorescence model delivers better total cost efficiency.

Dissolved oxygen is influenced by temperature, salinity, and altitude. Instrava integrates:

  • Automatic Temperature Compensation (ATC)

  • Salinity compensation (0–42 ppt)

  • Altitude compensation (up to 3500 m depending on model)

With ±3.0% FS accuracy and 0.1 mg/L resolution, the meter maintains consistent readings across freshwater, seawater, plateau regions, and seasonal variations.

The membrane method requires:

  • Periodic membrane cap replacement

  • Electrolyte replenishment

  • Calibration after maintenance

All required accessories are included in the standard configuration.

For plants with maintenance teams already managing electrochemical sensors, integration is straightforward and predictable.

Yes. The fluorescence model:

  • Does not require electrolyte

  • Does not require membrane replacement

  • Reduces routine maintenance frequency

  • Minimizes operator handling errors

For procurement managers evaluating long-term operating costs, this model typically reduces consumable expenses and labor time over the equipment lifecycle.

Yes. With measurement ranges up to 0.0–30.0 mg/L and support for % saturation readings, it is suitable for:

  • Aeration control in wastewater plants

  • Aquaculture oxygen management

  • Surface water environmental inspections

  • Laboratory validation testing

Its measurement stability supports operational optimization and compliance verification.

The meter supports manual storage of up to 99 data records, enabling:

  • Field inspection reporting

  • Operational logging

  • Compliance sampling documentation

For applications requiring portable measurement without complex data systems, this functionality provides practical and efficient data retention.

Why Trust Instrava?

We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.

Our very existence depends on helping you source the products that are the perfect fit for your needs.

Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.

We help you avoid intermediaries posing as factories.

We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.

Our multilingual team ensures effective communication.

For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.

Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.

Please place your trust in us.

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