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Optical Analysis
NDIR Gas Analyzer for Infrared Gas Analyzer
NDIR Gas Analyzer for High-Precision Industrial Gas Measurement
The NDIR gas analyzer from Instrava uses advanced Non-Dispersive Infrared (NDIR) technology to provide accurate and reliable gas concentration measurement in industrial environments. This optical detection method analyzes gases based on their unique infrared absorption characteristics, ensuring high sensitivity, strong stability, and long-term measurement accuracy.
The analyzer supports monitoring of multiple industrial gases including CO, CO₂, CH₄, NH₃, hydrocarbons (CnHm), SF₆, and SO₂, making it suitable for a wide range of industrial gas analysis applications. With measurement accuracy up to ±2% F.S. and resolution of 0.01%, the system delivers reliable results for continuous monitoring.
Designed for industrial process monitoring and environmental gas detection, the analyzer provides fast response time (T90 ≤ 15 seconds) and stable operation even in demanding industrial environments.
Optical Analysis Description
Industrial NDIR Gas Analysis for Process and Environmental Monitoring
This industrial NDIR gas analyzer is widely used in industries where precise gas composition monitoring is required for process control, emission monitoring, and safety management.
Typical application scenarios include:
Industrial process gas monitoring in petrochemical and manufacturing plants
Flue gas emission monitoring systems
Air quality monitoring in wastewater treatment plants and landfill sites
Biogas and renewable energy monitoring projects
Industrial gas analysis in laboratories and production lines
By delivering real-time multi-gas measurement, the analyzer helps operators maintain stable process control, optimize combustion efficiency, and ensure environmental compliance.
The embedded installation design allows the analyzer to be easily integrated into industrial control panels or monitoring systems, making it suitable for automated industrial monitoring applications.
Advanced NDIR Technology with Intelligent Monitoring Functions
The Instrava NDIR gas analyzer integrates advanced infrared sensing technology with intelligent control functions to provide efficient and reliable gas monitoring.
Key system advantages include:
High-precision infrared sensors with fast response and strong long-term stability
Automatic temperature compensation for accurate measurement under varying environmental conditions
Adjustable alarm thresholds with sound/light alarm and relay outputs
Automatic data storage with configurable intervals and historical data analysis
Large display with full English menu for easy configuration and operation
The analyzer also supports industrial communication interfaces including RS485, RS232, and 4–20 mA analog output, allowing seamless integration with PLC, DCS, or SCADA monitoring systems.
With low power consumption (≤10W), compact size, and durable industrial design, the analyzer is ideal for continuous gas monitoring in industrial environments.
Optical Analysis Parameter
| Parameter | Specification |
|---|---|
| Product Type | NDIR Gas Analyzer |
| Measurement Principle | NDIR (Non-Dispersive Infrared) |
| Measured Gases | CO, CO₂, CH₄, NH₃, CnHm, SF₆, SO₂ |
| Measurement Range | CO: 0–1% / CO₂: 0–1000 ppm / CH₄: 0–2% / NH₃: 0–1% / SF₆: 0–100 ppm / CnHm: 0–1% / SO₂: 0–5% |
| Accuracy | ≤ ±2% F.S |
| Resolution | 0.01% |
| Repeatability | ≤ ±1% F.S |
| Stability | Zero drift ≤ ±1% F.S / 7 days |
| Range Drift | ≤ ±1% F.S / 7 days |
| Response Time | T90 ≤ 15 s |
| Storage Capacity | 65,536 records |
| Storage Interval | Adjustable by seconds |
| Analog Output | 4–20 mA (optional 0–10 V) |
| Digital Communication | RS485 / RS232 |
| Relay Output | Dual relay output |
| Power Supply | 220–240 VAC, 50/60 Hz |
| Power Consumption | ≤ 10 W |
| Operating Temperature | -25°C to +55°C |
| Humidity | ≤ 90% RH |
| Sample Gas Flow | 400 ± 50 ml/min |
| Sample Gas Pressure | 0.05 – 0.25 MPa |
| Sample Gas Requirement | Dust-free, moisture-free, oil-free |
| Installation | Embedded installation |
| Dimensions | 145 × 145 × 282 mm |
| Cutout Size | 135 × 135 mm |
| Weight | ~2.6 kg |
| Service Life | > 6 years |
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.
An NDIR gas analyzer is used to measure gas concentrations using infrared absorption technology. It is widely used for industrial process monitoring, flue gas analysis, air quality monitoring, and environmental emission testing.
An NDIR analyzer detects gas concentration by measuring the absorption of infrared light at specific wavelengths. Each gas absorbs infrared energy differently, allowing the analyzer to accurately determine gas concentration.
Depending on configuration, NDIR gas analyzers can measure gases such as CO, CO₂, CH₄, NH₃, hydrocarbons, SO₂, and SF₆, making them suitable for multi-gas industrial monitoring applications.
Key advantages of NDIR gas analyzers include:
High measurement accuracy
Fast response time
Strong resistance to cross-gas interference
Long operational lifespan
Reliable performance for continuous industrial monitoring
NDIR analyzers are widely used in:
Petrochemical plants
Industrial manufacturing processes
Environmental monitoring stations
Wastewater treatment facilities
Landfill gas monitoring systems
Yes. Most industrial NDIR gas analyzers support 4–20 mA analog output, RS485 or RS232 communication, enabling integration with PLC, DCS, and SCADA systems for automated monitoring and process control.
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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