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Beijing Chengtian Shiyou Technology Co., Ltd
FTIR gas analyzer
NegotiableUpdate on 01/19
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Overview
Introduction to Portable FTIR Analyzer Manufacturers FTIR gas analyzer is a high-precision gas detection device based on infrared spectroscopy technology. With its advantages of multi-component, high sensitivity, and fast response, it has become an indispensable tool in environmental monitoring, industrial control, scientific research, and other fields. In the future, it will continue to evolve towards portability and intelligence.
Product Details
FTIR gas analyzer is a high-precision gas detection device based on infrared spectroscopy technology. Its core principles, technical characteristics, application fields, and performance advantages are as follows:
1、 Core principle: Infrared absorption and Fourier transform
Infrared absorption mechanism
Chemical bonds in gas molecules (such as C-H, O-H, N ≡ N, etc.) have specific vibrational and rotational frequencies. When infrared light (usually in the wavelength range of 2.5-25 μ m, corresponding to 4000-400 cm ⁻¹) passes through a gas sample, molecules absorb infrared light that matches their natural frequency, forming characteristic absorption peaks. By detecting the wavelength and intensity of the absorbed light, the composition and concentration of the gas can be inferred.
Fourier transform technique
Traditional dispersive infrared spectrometers use grating to separate light, while FTIR uses a Michelson interferometer to convert infrared light into interference signals.
The interference signal is converted into an infrared absorption spectrum through Fourier transform (mathematical algorithm), achieving full band synchronous detection and significantly improving signal-to-noise ratio and resolution.
2、 Technical features: multi-component, highly sensitive, fast response
Multi component synchronous analysis
FTIR can simultaneously detect dozens of gases (such as SO ₂, NOx, CO, CO ₂, CH ₄, VOCs, etc.), covering concentration ranges from ppm (parts per million) to%. For example, GASMET DX4000 can detect pollutants such as SO ₂, NO, CO, HCl, HF, as well as greenhouse gases such as CO ₂ and CH ₄.
High sensitivity and resolution
The resolution can reach 0.1~0.8 cm ⁻¹, and it can distinguish gases with similar structures (such as CO and N ₂ O).
The detection limit is as low as ppb (parts per billion), such as Thermo Fisher MAX-iR FTIR, which can reach ppt (parts per trillion) level in ethylene oxide monitoring.
Quick response and real-time monitoring
Scanning speed up to 10 times per second, response time<120 seconds, suitable for dynamic process monitoring (such as combustion emissions, industrial process control).
Equipped with a heating sampling system (working temperature up to 180 ℃), it can prevent high humidity gas condensation and ensure data accuracy.
Strong anti-interference ability
By using spectral interference automatic correction algorithm, cross interference of background gases such as water vapor and CO ₂ can be eliminated, improving the reliability of detection in complex environments.
3、 Application areas: Full coverage of environment, industry, and scientific research
environmental monitoring
Air pollution monitoring: detecting pollutants such as VOCs, O3, NO ₂ in the air, and evaluating air quality.
Industrial emission monitoring: monitoring the composition of flue gas (such as SO ₂ NOx、HCl、HF)， Assist enterprises in meeting emission standards.
Greenhouse gas monitoring: Quantify greenhouse gas emissions such as CO ₂, CH ₄, N ₂ O, and support carbon trading and climate change research.
industrial process control
Combustion optimization: Real time monitoring of the concentrations of O ₂, CO, and CO ₂ during the combustion process to optimize combustion efficiency and reduce fuel waste.
Safety production: Detect toxic gases (such as H ₂ S, NH ∝) in chemical production to prevent leakage accidents.
Quality control: Analyze the composition of petroleum products (such as gasoline and diesel) to ensure stable product quality.
scientific research
Chemical reaction kinetics: studying reaction intermediates and products, revealing reaction mechanisms.
Atmospheric chemistry: Analyzing short-lived species such as free radicals and ozone precursors in the atmosphere.
Materials Science: The study of the adsorption and desorption behavior of gases on material surfaces.
other fields
Medical diagnosis: Detecting biomarkers such as NO and CO in respiratory gases to assist in the diagnosis of asthma and chronic obstructive pulmonary disease (COPD).
Food safety: Analyze the concentration of O ₂ and CO ₂ in food packaging to extend shelf life.
Forensic science: detecting trace substances such as explosive residues.
4、 Performance advantages: portability, intelligence, low cost
Portable design
Modern FTIR gas analyzers (such as GASMET DX4000, AtmosFIR) adopt lightweight design (weight<20kg), equipped with lithium batteries and wireless remote control modules, supporting rapid on-site deployment.
Intelligent software
Built in spectral database (including ≥ 5000 component spectra), supports user built extensions, and achieves "plug and play" qualitative and quantitative analysis.
Equipped with automated calibration, data storage, and remote transmission functions to reduce manual operation errors.
Low cost maintenance
No need for liquid nitrogen cooling (such as CAI 600SC FTIR), reducing operating costs.
Modular design facilitates maintenance, and key components such as interferometers and detectors have a lifespan of tens of thousands of hours.
5、 Development Trends
Higher sensitivity: By using optical enhancement techniques such as StarBoost, the detection limit is pushed to the ppt level.
Multi technology integration: Combining GC (gas chromatography), MS (mass spectrometry) and other technologies to achieve the analysis of more complex gas components.
AI Empowerment: Utilizing machine learning algorithms to optimize spectral analysis and improve data accuracy in complex environments.
Open circuit telemetry: Develop long-distance (such as 500 meters) open circuit FTIR systems suitable for monitoring large-area gas leaks.
FTIR gas analyzer, with its advantages of multi-component, high sensitivity, and fast response, has become an indispensable tool in environmental monitoring, industrial control, scientific research, and other fields. In the future, it will continue to evolve towards portability and intelligence.
