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Optical Analysis
Home » Products » Optical Analysis » Portable Fourier Transform Infrared (FTIR) Gas Analyzer for Optical Analysis

Portable FTIR Gas Analyzer for Real-Time Multi-Gas Detection
The Portable Fourier Transform Infrared (FTIR) Gas Analyzer is a high-performance solution designed for real-time multi-gas analysis and emission monitoring in complex industrial environments. Based on advanced FTIR spectroscopy technology, the analyzer enables simultaneous qualitative and quantitative detection of multiple gas components with high accuracy.
Featuring high-temperature (up to 180°C) heated sampling and filtration technology, the system is ideal for hot and wet flue gas analysis, eliminating condensation interference and ensuring reliable measurements in harsh conditions.
With a wide spectral range of 485–8500 cm⁻¹ and high-resolution analysis capability, the instrument provides precise identification and concentration measurement of both organic and inorganic gases.
Optical Analysis Description
Designed for Industrial Emission Monitoring and Environmental Compliance
This portable FTIR gas analyzer is widely used in applications requiring accurate gas composition analysis, regulatory compliance, and environmental monitoring.
Typical use cases include:
Industrial flue gas emission monitoring (CEMS comparison)
Boiler and combustion exhaust gas analysis
Waste incineration emission testing
Vehicle, marine, and aviation exhaust analysis
SCR/SNCR denitrification efficiency monitoring
Environmental emergency response and air quality inspection
Gas purity analysis and laboratory research
The analyzer can simultaneously measure more than 50 gas components, including:
SO₂, NO, NO₂, CO, CO₂, NH₃, HCl, HCN, HF, CH₄, VOCs, hydrocarbons, and more.
With support for multi-scenario modeling, one device can be used for both fixed pollution source monitoring and portable field detection, significantly improving operational efficiency and ROI for industrial users.


Advanced FTIR Technology with High Sensitivity and Stability
The system integrates advanced optical and analytical technologies to ensure high sensitivity, fast response, and long-term stability.
High-resolution FTIR analysis
Resolution up to 0.5–1 cm⁻¹ for accurate qualitative and quantitative analysis
Quantitative accuracy: ±2% of calibration range
Adjustable test time based on resolution requirements
Simultaneous multi-component detection
Quantification of up to 50 gas compounds simultaneously
Built-in 400+ quantitative spectral libraries
Access to 5500+ qualitative compound databases
Optimized gas cell and sampling system
Compact 300 ml gas chamber for fast gas exchange
Heated sampling system for high-temperature flue gas (180°C)
Built-in sampling pump to reduce sample loss and contamination
Durable optical system
Gold-coated mirrors for corrosion resistance (acid/alkaline gases)
High-durability double-pivot interferometer with permanent alignment
Long-life DTGS detector (up to 10 years)
Solid-state laser reference source with long operational life
Enhanced environmental adaptability
Nitrogen purge system for optical path protection
Built-in oxygen (O₂) measurement via zirconia sensor
Designed for harsh industrial and environmental monitoring conditions
Optical Analysis Parameter
| Parameter | Specification |
|---|---|
| Product Type | Portable FTIR Gas Analyzer |
| Technology | Fourier Transform Infrared Spectroscopy |
| Spectral Range | 485 – 8500 cm⁻¹ |
| Resolution | 0.5 – 1 cm⁻¹ (optional) |
| Accuracy | ±2% of calibration range |
| Gas Cell Volume | 300 ml |
| Detection Capability | Up to 50 gases simultaneously |
| Detector | DTGS (long-life, room temperature) |
| Sampling System | Heated sampling (up to 180°C) |
| Oxygen Measurement | Built-in zirconia sensor |
| Optical System | Gold-coated mirrors |
| Communication | Data output & analysis software |
| Application | Emission monitoring, environmental analysis |
Instrava OEM/ODM
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.

A portable FTIR gas analyzer is used for real-time detection and analysis of multiple gases in industrial emissions and environmental air. It is commonly applied in flue gas monitoring, VOC analysis, environmental compliance testing, and emergency air quality inspections.
A portable FTIR gas analyzer uses infrared spectroscopy and Fourier transform algorithms to analyze gas samples. It measures how gases absorb infrared light at different wavelengths, allowing simultaneous identification and quantification of multiple gas components in real-time emission monitoring.
A portable FTIR gas analyzer can detect a wide range of gases, including SO₂, NOx (NO, NO₂), CO, CO₂, NH₃, HCl, HF, VOCs, hydrocarbons, and greenhouse gases. Advanced systems can analyze 50+ gas components simultaneously.
Compared to traditional gas analyzers, portable FTIR gas analyzers offer:
Simultaneous multi-gas detection
High accuracy and sensitivity
Real-time analysis without gas separation
Wide compound detection capability
Flexible on-site measurement for field applications
These advantages make them ideal for industrial emission monitoring and environmental testing.
Yes. This portable FTIR gas analyzer supports heated sampling up to 180°C, allowing accurate analysis of hot and wet flue gas without condensation, which is critical for industrial stack emission monitoring.
The accuracy of a portable FTIR gas analyzer depends on factors such as spectral resolution, calibration quality, gas cell design, sampling conditions, and environmental stability. Proper maintenance and calibration ensure reliable and repeatable results.
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.
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.
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.
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.
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
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.
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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