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FTIR Gas Analyzer, MultiGas™, Continuous Emissions Monitoring


  • Type
    MultiGas™ 2030 CEM
  • Measurement Technique
    FTIR Spectrometry
  • Spectral Resolution
    0.5 cm-1
  • Scan Time
    60 seconds
  • Infrared Source
    Silicon Carbide @ 1200°C
  • Reference Laser
    Helium Neon (15798.2 cm-1)
  • Detector
    Thermoelectrically (TE) cooled MCT (HgCdTe)
  • Purge Pressure
    20 psig (1.5 bar) max.
  • Spectrometer Purge Flow
    0.2 L/min of dry nitrogen or CO2 free clean dry air with dewpoints below -70°C
  • Optics Purge Flow
    0.2 L/min of dry nitrogen or CO2 free clean dry air with dewpoints below -70°C
  • Pressure Transducer
    MKS Baratron® Capacitance Manometer
  • Purge Connection
    1/4 inch Swagelok® quick connect
  • Computer Requirements
    Intel Pentium® PC, Microsoft® Windows® xP or Windows® 7 operating systems, display (1024 x 768) - Desktop or Notebook
  • Communication
    TOOLweb® (HTML based), OPC, Modbus TCP/IP
  • Enclosure
    19 inch rack mount chassis
  • Dimensions
    17.5 in. W x 12.5 in. H x 25.5 in. D
  • Power Requirements
    120 or 240 VAC, 50/60 Hz, 3 amps
  • Weight
    110 lbs. (50 kg)
  • Sample Temperature
  • Sample Flow
    1 L/min
  • Sample Pressure
    1 atm ±0.05
  • Gas Cell Materials
    Nickel coated Al
  • Fittings
    1/4 inch Swagelok®
  • Tubing
    Heated 1/4 inch stainless steel
  • Mirrors
    Nickel plated aluminum substrate, with rugged gold coating
  • Windows
  • O-rings


System Components

The MultiGas 2030 analyzer is made up of a Process FTIR spectrometer, a patented, high-optical-throughput gas cell and a long wavelength, thermoelectrically (TE) cooled detector. Also included is the MG2000 software platform which offers several communication protocol options for interfacing to CEMS control systems.

The MultiGas 2030 instrument is housed in a rugged 19-inch rack mount chassis for convenient integration with most CEMS enclosures. The analyzer is easy to maintain and has a low cost of ownership (COO).


The MultiGas 2030 CEM is the core technology used in the TÜV and MCERTS certified MGS300 system produced by MKS Instruments. MGS300 system certification was achieved in compliance with the DIN EN 15267-3 standard, which relates to automated measuring systems for the monitoring of emissions from stationary sources.


The TÜV and MCERTS “certification” and “supplementary” ranges achieved for the different gas components are shown in Table 1 below. Table 2 shows the same certification ranges, but this time in ppm, along with additional ranges and estimated detection limits calculated as three times the standard deviation in 25% water.


The MultiGas 2030 CEM is designed for integration with complete continuous emissions monitoring systems to measure gaseous emissions from stationary sources such as:

  • Waste incinerators
  • Power plants
  • Cement kilns
  • Large combustion plants
  • Turbine engines

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