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FTIR CEMS

FTIR CEMS

FTIR CEMS
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FTIR CEMS

Introduction

Our FTIR  CEMS is engineered for complex industrial emissions and process control. By employing full-process high-temperature heating (maintaining sampling probes and gas paths at 180°C), the system effectively eliminates the risk of sample condensation. This ensures the integrity of soluble gases and delivers industry-leading measurement accuracy.

Key Features:
  • Multi-Component Measurement: Simultaneously monitor a wide range of pollutants, including SO2, NO, NO2, N2O, CO, CO2, NH3, HCl, HF, H2O, CH4 (customizable to your specific needs).
  • 180°C Heated Sampling: Continuous high-temperature operation from probe to analyzer prevents pollutant loss and ensures stable performance in harsh environments.
  • Superior Accuracy: High spectral resolution and advanced algorithms minimize cross-interference between gas components.
  • Customizable & Scalable: Flexible configurations to meet diverse industrial compliance and research requirements.
Applications:
Ideal for waste incineration, power plants, chemical manufacturing, and environmental research where precise, real-time gas monitoring is critical.
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Structure and Components

cems
Continuous Emission Monitoring System (CEMS)
The FTIR CEMS  system employs full-process high-temperature heating (sampling probes, heated to 180°C) for pollutant measurement. It can measure multiple pollutants including SO2, NO, NO2, N2O, CO, CO2, NH3, HCl, HF, H2O, CH4, and H2O  (customers can select according to their needs). The continuous heating minimizes pollutant loss during condensation, thereby enhancing measurement accuracy which is special design for the waste-energy application !   
  • FTIR CEMS gas analyzer : Fourier Transform Infra Red (FTIR) spectroscopy is based on the absorption of an infrared beam by the sample gas molecules,which induces vibrational state changes for each molecule at specific frequencies. An IR source emits a polychromatic radiation in the medium infrared, which is sent to a Michelson interferometer. Thisinterferometer consists of a beam splitter and two mirrors placed in nearly orthogonal planes (one being static, the other oscillating). The beam splitter is used to separate the incident beam into two identical rays, to send them to be reflected on each mirror, and to recombine the rays to obtain an interference image which depends on the difference of the optical path induced by the mirror oscillation. The obtained interference image or 《interferogram》 corresponds to an energy variation as a function of each wavelength time, with a maximum when waves are in phase, and a minimum when waves are in phase opposition.Therefore, the interferogram corresponds to an energy variation as a function of time, and theoptical spectrum corresponding to an energy variation as a function of freguency is obtainecby Fourier Transform signal processing. Features: 
    1. Independently developed and designed interferometer for field applications, robust and durable with lifetime maintenance-free operation;
    2. Interferometer section utilises helium-neon laser, offering superior wavelength stability compared to semiconductor lasers;
    3. Fully metallic, multi-reflective, high-temperature gold-plated gas cell, corrosion-resistant and highly reliable, with no loss of water-soluble gas components such as HCl or NH₃;
    4. Spectrometer resolution optimised for target gases, delivering high detection accuracy;
    5. High internal temperature control precision with excellent environmental adaptability;
    6. Incorporates a long-life infrared light source;
    7. Modular design featuring light source, spectrometer, core circuitry, and gas cell modules, ensuring high reliability, scalability, and ease of maintenance.

FTIR CEMS Gas Analyzer Specification

Gas Analyzer
Measuring PrincipleFTIR
Gas TemperatureUp to 180°C
Operating Temperature Range15-35°C
Purge and Zero gasNitrogen (99.999% or higher than recommended)
Warm-up Time2 hours
Sample Gas PressureAmbient
Sample Gas Flow rate2-3L/min recommended
Sample Gas FiltrationMinimum 2μm particulate filtration
Gas FittingsSample in: 6mm Swagelok, stainless steel;
Sample out: 8 mm Swagelok, stainless steel;
Interferometer purge: 6mm Swagelok stainless steel;
Output PortEthernet port
Communication ProtocolsMODBUS
Power Requirements220VAC±10% Peak 2500W/Average 150W
Weight25Kg
Physical Dimensions482mm(D)x175mm(H)x432(D)
Performance
Zero Drift<2%@24 hours
Span Drift<2%@24 hours
Response TimeTypically<100s@3L/min
Linearity±1%F.S.
RepeatabilityNot more than 1%
Accuracy<2%FS

Product Features

 Detailed features of FTIR CEMS：

  1. The system can simultaneously measure the concentrations of multiple gaseous pollutants;
  2. Utilizes the thermal-humid principle to measure gaseous pollutant concentrations, eliminating the need for dilution or condensation. The analyzer can be directly connected to a sampling probe or heated sampling line to prevent pollutant loss during the cooling and drying process, thereby enhancing measurement accuracy;
  3. Ensures accurate and complete measurement of NH3, HCl, and HF even when the water vapor concentration in the sample gas reaches 40%;
  4. Based on Fourier transform infrared multi-component measurement principles, it ensures measurement stability and accuracy;
  5. The sample gas collection and transportation process undergoes two-stage filtration to protect the analyzer;
  6. The flue gas sampling probe is made of SS316L material and heated to 180°C to prevent corrosion of the sampling pipe and related equipment;
  7. The system is equipped with calculation software that automatically calculates the measured components (Fourier transform), corrects for temperature and pressure, and ultimately converts the values to dry-basis values in standard conditions compliant with environmental regulations.
  8. The system has full-process calibration functionality.

Still having questions? Please just contact us directly!

Structure and Components

cems
Continuous Emission Monitoring System (CEMS)

The FTIR CEMS  system employs full-process high-temperature heating (sampling probes, heated to 180°C) for pollutant measurement. It can measure multiple pollutants including SO2, NO, NO2, N2O, CO, CO2, NH3, HCl, HF, H2O, CH4, and H2O  (customers can select according to their needs). The continuous heating minimizes pollutant loss during condensation, thereby enhancing measurement accuracy which is special design for the waste-energy application ! 

 

  • FTIR CEMS gas analyzer : Fourier Transform Infra Red (FTIR) spectroscopy is based on the absorption of an infrared beam by the sample gas molecules,which induces vibrational state changes for each molecule at specific frequencies. An IR source emits a polychromatic radiation in the medium infrared, which is sent to a Michelson interferometer. Thisinterferometer consists of a beam splitter and two mirrors placed in nearly orthogonal planes (one being static, the other oscillating). The beam splitter is used to separate the incident beam into two identical rays, to send them to be reflected on each mirror, and to recombine the rays to obtain an interference image which depends on the difference of the optical path induced by the mirror oscillation. The obtained interference image or 《interferogram》 corresponds to an energy variation as a function of each wavelength time, with a maximum when waves are in phase, and a minimum when waves are in phase opposition.Therefore, the interferogram corresponds to an energy variation as a function of time, and theoptical spectrum corresponding to an energy variation as a function of freguency is obtainecby Fourier Transform signal processing.

    Features: 

    1. Independently developed and designed interferometer for field applications, robust and durable with lifetime maintenance-free operation;
    2. Interferometer section utilises helium-neon laser, offering superior wavelength stability compared to semiconductor lasers;
    3. Fully metallic, multi-reflective, high-temperature gold-plated gas cell, corrosion-resistant and highly reliable, with no loss of water-soluble gas components such as HCl or NH₃;
    4. Spectrometer resolution optimised for target gases, delivering high detection accuracy;
    5. High internal temperature control precision with excellent environmental adaptability;
    6. Incorporates a long-life infrared light source;
    7. Modular design featuring light source, spectrometer, core circuitry, and gas cell modules, ensuring high reliability, scalability, and ease of maintenance.

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