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Liquid Analysis
Dissolved Oxygen Meter
In wastewater treatment, aeration control, aquaculture, and environmental monitoring, accurate dissolved oxygen (DO) measurement directly impacts process efficiency, energy consumption, and regulatory compliance. Traditional electrochemical DO sensors require electrolyte replacement, frequent calibration, and flow rate control—introducing maintenance burden and measurement uncertainty.
The Instrava Optical Dissolved Oxygen Meter adopts internationally leading fluorescence lifetime technology, based on the physical quenching principle of active fluorescence. Unlike membrane or polarographic methods, this optical solution does not consume oxygen during measurement, eliminating flow rate limitations and significantly reducing maintenance requirements.
With a response time as low as 20 seconds, automatic temperature and pressure compensation, and high mechanical protection (IP68 probe), this system delivers stable, fast, and reliable DO measurement in dynamic industrial environments.
Liquid Analysis Description
Dissolved Oxygen Meter Typical Application Scenarios
Municipal and industrial wastewater treatment plants
Aeration tank monitoring and process optimization
Surface water and environmental monitoring
Aquaculture and fishery oxygen management
Research laboratories and field environmental surveys
Unstable or fluctuating water bodies requiring high stability measurement
Designed for both portable field deployment and routine plant inspection, the instrument ensures high reliability in challenging environments.
Dissolved Oxygen Meter Engineering Advantages
Fluorescence Lifetime Technology
No oxygen consumption during measurement
No electrolyte replacement
No flow rate limitation
Minimal calibration frequency
This significantly reduces maintenance costs and improves long-term stability.
Fast & Stable Response
20-second response time
Accuracy: ±1% or ±0.3 mg/L (whichever is greater)
Real-time temperature and air pressure compensation (50–115 kPa automatic)
Ensures reliable readings even in aeration tanks or fluctuating conditions.
Intelligent Handheld Platform
Compatible with Yosemite Y600-A multifunction handheld system
Automatic sensor recognition
Supports USB data transmission and logging
Built-in calibration parameters, pre-calibrated before delivery
Enables multi-parameter expansion including conductivity, turbidity, chlorophyll, BGA, OIW, and TSS.
Industrial-Grade Mechanical Design
316L stainless steel probe housing
IP68 probe protection / IP67 handheld unit
Split waterproof structure for enhanced durability
Max pressure resistance: 6 bar
Suitable for submerged and demanding field applications.
Portable & Field-Optimized
Handheld unit weight: 460 g
Probe weight: 204 g
Powered by two 18650 rechargeable batteries
Backlit large LCD display for easy reading
Optimized for long-duration outdoor inspections.
Liquid Analysis Parameter
Dissolved Oxygen Meter Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Principle | Fluorescence method |
| Range | 0–20 mg/L or 0–200% saturation |
| Accuracy | ±1% or ±0.3 mg/L (larger value applies) |
| Temperature Range | 0–50°C |
| Response Time | 20 seconds |
| Maximum Pressure | 6 bar |
| IP Rating | IP68 |
| Probe Size | Φ26 mm × 175 mm |
| Cable Length | 5 m (customizable) |
| Probe Weight | 204 g |
| Calibration | One-point or two-point |
| Housing Material | 316L stainless steel |
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.
Unlike membrane-based electrochemical sensors, the optical probe does not consume oxygen during measurement. There is no electrolyte replacement, no membrane aging, and no flow rate restriction. For plant operators and procurement teams, this means lower maintenance costs, reduced downtime, and more stable long-term operation.
Yes. The probe provides a fast 20-second response time and automatic temperature and pressure compensation. Even under fluctuating aeration intensity or turbulence, the fluorescence method ensures stable and repeatable readings without drift caused by oxygen consumption.
The fluorescent film is highly durable and does not degrade rapidly under normal wastewater conditions. Combined with the 316L stainless steel housing and IP68 protection rating, the probe is designed for long-term industrial deployment in submerged or high-pressure environments (up to 6 bar).
The handheld unit features built-in real-time temperature and air pressure compensation (50–115 kPa). This eliminates manual correction errors and ensures DO values remain accurate across seasonal temperature changes or varying altitude conditions.
Yes. The handheld platform supports automatic recognition of compatible digital sensors, including conductivity, turbidity, chlorophyll, BGA, oil-in-water (OIW), and TSS. This allows engineering teams to integrate multi-parameter water quality monitoring on a single portable platform, reducing equipment redundancy.
With no electrolyte replacement, minimal recalibration needs, durable construction, and rechargeable battery operation, the system significantly reduces consumables and service frequency. For procurement managers, this translates into lower total cost of ownership (TCO) and predictable maintenance budgeting over the instrument lifecycle.
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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