FTIR Gas Analyzer Portable Model Monitor More Than 10 Gases
An FTIR gas analyzer, also known as an FTIR gas spectrometer or
FTIR gas detector , is an instrument that utilizes Fourier
Transform Infrared (FTIR) spectroscopy to analyze the composition
of gases. It is widely used in various industries and applications,
including environmental monitoring, industrial process control,
safety, and research.
The basic working principle of an FTIR gas analyzer involves the
interaction of infrared light with gas molecules. When infrared
light passes through a gas sample, it interacts with the molecules,
causing them to absorb specific wavelengths of light that are
characteristic of their molecular structure. The FTIR analyzer
measures the intensity of the transmitted light across a range of
infrared wavelengths, producing an absorption spectrum that
contains information about the gas components present in the
sample.
Key components of an FTIR gas analyzer include:
1. Light source: An infrared light source, often a broadband source
such as a Globar, emits infrared radiation across a wide spectral
range.
2. Interferometer: The interferometer is a critical component that
modulates the infrared light. The most common type of
interferometer used in FTIR analyzers is the Michelson
interferometer. It splits the incident light into two beams, which
travel different paths before recombining.
3. Sample cell: The gas sample is introduced into a sample cell or
gas chamber, where it interacts with the infrared light. The sample
cell is designed to ensure a sufficient path length for the light
to interact with the gas molecules.
4. Detector: The recombined light from the interferometer passes
through the sample cell and falls onto a detector. The detector
converts the light intensity into an electrical signal.
5. Data processing: The electrical signal from the detector is
processed using Fourier transform techniques. A mathematical
algorithm called Fourier transform is applied to convert the
time-domain signal into an absorption spectrum, which represents
the intensity of light absorbed at different infrared wavelengths.
This spectrum is analyzed to identify and quantify the gas
components present in the sample.
Modern FTIR gas analyzers often feature advanced software
algorithms that facilitate automated identification and
quantification of gas species. They may also offer real-time
monitoring, data logging capabilities, and remote control options
for enhanced convenience and flexibility.
FTIR gas analyzers are valuable tools for gas analysis because they
can simultaneously detect and quantify multiple gas components in a
mixture. They are capable of identifying a wide range of gases,
including volatile organic compounds (VOCs), greenhouse gases,
pollutants, and hazardous substances. The sensitivity and
specificity of an FTIR gas analyzer depend on factors such as the
instrument's resolution, signal-to-noise ratio, and the
availability of reference spectral libraries for accurate
identification.
Overall, FTIR gas analyzers play a crucial role in environmental
monitoring, process control, safety applications, and research by
providing rapid and reliable analysis of gas samples.
Features
- It can measure SO2, NOX (NO, NO2), CH4, NH3, HCl, HF, CO, CO2, O2,
H2O and other components at the same time, and other measurement
components can be added as needed, such as SO3, N2O and various
VOCs gas
- Core components, independent research and development, high
maintenance efficiency and low maintenance cost
- The system is small in size, fast in preheating, easy in
assembly, fast in sampling and moderate in power, and can be used
for long-term onsite analysis and application of complex working
conditions
- The instrument has a built-in long optical path White cell gas
chamber, the optical path is adjustable, and the detection limit
can reach ppb level
- Can be used as a continuous detection emergency alternative to CEMS
- It can be used as fixed pollution source emission detection, CEMS
comparison and acceptance, leakage inspection emergency
monitoring,laboratory measurement analysis
- Built-in excellent measurement analysis algorithm,
effectively eliminate the interference caused by strong infrared
absorbing substances (H2O, CO2)
Applications
- Multi-level Environmental Monitoring Station
- Third-party testing agency
- Coal-fired power plants, gas-fired power plants, cement plants,
steel plants, waste incineration and other industrial occasions
- Environmental emergency monitoring
- Laboratory gas detection and analysis, etc.
