Choosing the Right Optical Gas Analysis Solution: A Complete Industry Guide
Selecting the right gas analysis system is crucial for ensuring safety, compliance, and efficiency across multiple industries. Optical gas analysis...
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Online Gas Analyzer for Continuous Industrial Gas Monitoring
High-Precision Online Gas Analyzer for Continuous Industrial Monitoring
The online gas analyzer from Instrava is designed for continuous industrial gas monitoring, using advanced NDIR (Non-Dispersive Infrared) technology to accurately measure gases such as CO, CO₂, CH₄, C₃H₈, SO₂, and NO. The analyzer can simultaneously calculate gas calorific value, making it ideal for combustion efficiency analysis and industrial process optimization.
This industrial online gas analyzer is built for 24/7 continuous monitoring, offering fast response times, high measurement stability, and strong anti-interference capability. The system automatically samples and analyzes gas compositions, enabling engineers to obtain real-time gas concentration data for process control and safety monitoring.
Equipped with imported NDIR infrared sensors and thermal conductivity sensors, the analyzer provides high-accuracy gas measurement with minimal drift, ensuring reliable operation in demanding industrial environments such as steel plants, gasification systems, and chemical production facilities.
Optical Analysis Description
Online Gas Analysis for Industrial Process Control and Energy Monitoring
The online gas analyzer system is widely used in industries where continuous monitoring of combustible gas composition and calorific value is critical.
Typical applications include:
Steel plants – monitoring blast furnace gas and converter gas
Coal gasification systems – analyzing synthesis gas composition
Chemical plants – process gas monitoring and optimization
Biomass gasification – measuring bio-gas components
Energy efficiency monitoring – evaluating combustion efficiency
Industrial fuel gas monitoring – coke oven gas, mixed gas, producer gas
The analyzer can measure CO, CO₂, CH₄, H₂, hydrocarbons (CnHm), and O₂ concentrations while calculating heating values (MJ/m³ or kcal/m³). Advanced algorithms automatically correct cross-gas interference, ensuring accurate gas composition analysis even when multiple gases coexist.
Its standard 3U rack-mount design with aluminum alloy housing makes it easy to install in industrial control cabinets and monitoring systems.
Advanced NDIR Technology and Intelligent Gas Analysis System
The Instrava online gas analyzer integrates intelligent analysis software and advanced sensor technology to ensure stable and precise gas measurements.
Key features include:
Dual-beam NDIR infrared sensors for precise gas detection
Thermal conductivity detection for hydrogen measurement
Automatic cross-gas interference correction
Automatic sampling and analysis without consumables
Fast response time for real-time process monitoring
The analyzer supports automatic calorific value calculation and allows users to switch between MJ/m³ and kcal/m³ units. Built-in software provides data logging, historical data query, and USB export, helping engineers analyze long-term gas composition trends.
With RS-232 digital output and 4-20mA analog output, the analyzer can easily integrate with PLC, DCS, and industrial monitoring systems, enabling centralized process control and remote monitoring.
The system also features modular hardware design and remote software upgrades, ensuring long-term flexibility for evolving industrial monitoring needs.
Optical Analysis Parameter
| Parameter | Specification |
|---|---|
| Product Type | Online Gas Analyzer |
| Measurement Technology | NDIR Non-Dispersive Infrared |
| Measured Gases | CO, CO₂, CH₄, C₃H₈, SO₂, NO |
| Measurement Range | CO/CO₂/CH₄/C₃H₈: 0–100% ; SO₂/NO: 0–5% |
| Resolution | 0.01% (Low range up to 1 ppm) |
| Accuracy | ≤ ±1% F.S |
| Repeatability | ≤1% |
| Response Time | (TD+T90) < 10 s |
| Sampling Flow Rate | 0.7 – 1.2 L/min |
| Inlet Pressure | 2 – 50 kPa |
| Sample Gas Requirement | Dust-free, moisture-free, oil-free |
| Signal Output | RS-232 digital output / 4-20 mA analog |
| Power Supply | AC 220V / 50 Hz |
| Installation | Standard 3U rack mounting |
| Operation Mode | Continuous 24/7 monitoring |
Instrava OEM/ODM
Reliable Instruments. Solutions That Fit Your Application.
Instrava is focused on delivering reliable industrial solutions through carefully curated products, application-driven optimization, and flexible customization. We select proven instruments from trusted manufacturers to ensure consistent quality, optimize solutions based on real working conditions to solve practical challenges, and provide tailored configurations to meet specific application needs.
By combining selection expertise with application understanding, Instrava helps customers reduce risk, improve efficiency, and achieve dependable results in complex industrial environments.
What is an online gas analyzer used for?
An online gas analyzer is used for continuous monitoring of industrial gas compositions in real time. It helps industries measure gases such as CO, CO₂, CH₄, and SO₂ in combustion systems, gasification processes, and industrial emissions to ensure process efficiency and safety compliance.
How does an NDIR online gas analyzer work?
An NDIR online gas analyzer measures gas concentration based on infrared absorption at specific wavelengths. Each gas absorbs infrared energy differently, allowing the analyzer to determine its concentration with high precision and strong resistance to interference.
Which gases can an online gas analyzer detect?
A typical industrial online gas analyzer can detect gases including CO, CO₂, CH₄, C₃H₈, SO₂, and NO, while also calculating gas calorific value for combustion efficiency analysis in fuel gas systems.
Can an online gas analyzer run continuously?
Yes. Industrial online gas analyzers are designed for 24/7 continuous monitoring. With automatic sampling and real-time analysis, they provide stable gas measurements for long-term industrial operation.
How is an online gas analyzer connected to industrial control systems?
Most online gas analyzers support 4-20mA analog outputs and RS232/RS485 digital communication, allowing easy integration with PLC, DCS, and SCADA systems for centralized process monitoring.
What industries use online gas analyzers?
Industries that rely on fuel gas monitoring and combustion optimization commonly use online gas analyzers, including:
Steel and metallurgical plants
Chemical and petrochemical plants
Coal and biomass gasification facilities
Energy efficiency monitoring systems
Environmental emissions monitoring
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Why Choose Instrava
Built on Consistency, Not Claims
Focused on Industrial Applications
We specialize in industrial analysis and detection, with a clear understanding of real-world operating environments and requirements.
Strict Product Selection Criteria
Every instrument is evaluated based on performance, stability, and application suitability—not just specifications or pricing.
Reliable Supply & Quality Consistency
We work with trusted manufacturers to ensure stable supply, consistent quality, and dependable delivery.
Practical, Experience-Based Support
Our recommendations are grounded in application understanding, helping customers avoid common issues and achieve reliable results.
Instrava is built to reduce uncertainty—so every decision you make is clearer, safer, and more reliable.
