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FTIR Gas Analyzer, MultiGas™, Low Level Continuous Emissions Monitoring


  • Type
    MultiGas™ 2030 CEM HiSens
  • Measurement Technique
    FTIR Spectrometry
  • Spectral Resolution
    Minimum of 0.58 cm-1
  • Scan Time
    60 seconds
  • Infrared Source
    Silicon Carbide Laser Helium Neon
  • 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 CO , free clean, dry air with dewpoint below -70°C
  • Optics Purge Flow
    0.2 L/min of dry nitrogen or CO , free clean, dry air with dewpoint below -70°C
  • Pressure Transducer
    MKS Baratron® capacitance manometer
  • Purge Connection
    1/4 inch Swagelok® quick connect
  • Computer Requirements
    Intel Pentium® PC (Desktop or Notebook), Microsoft® Windows® xP or Windows®7 operating systems, 1024 x 768 display
  • Communication
    TOOLweb®, HTML based (included), OPC or Modbus TCP/IP (not included)
  • Enclosure
    19 inch Rack mount chassis
  • Dimensions
    17.5 in. wide, 12.5 in. high, 25.5 in. deep
  • Power Requirements
    120 or 240 VAC, 50/60 Hz, 3 amps
  • Weight
    110 lbs. (50 kg)
  • Sample Temperature
  • Sample Flow
    0.5 - 5 L/min
  • Sample Pressure
    1 atm ±0.05
  • Gas Cell Materials
    Nickel-coated Al
  • Fittings
    1/4 inch threaded Swagelok®
  • Tubing
    Heated 1/4 inch stainless steel
  • Mirrors
    Nickel plated aluminum substrate, with rugged MgF2-gold coating
  • Windows
  • O-rings


System Components

The MultiGas 2030 analyzer is comprised of a 2102 Process FTIR Spectrometer, an MKS-patented, highoptical-throughput sampling cell, applications-specific analysis software, and an instrument-independent, quantitative spectral library. The MultiGas also incorporates a high-sensitivity thermoelectrically (TE) cooled detector. This analyzer configuration, along with the software analysis package, allows for more accurate, extremely sensitive measurement of several gases, such as HCl, HF, formaldehyde and CO2 , in high moisture streams (up to 40%) by producing high resolution spectra which enable the detection and measurement of components without removal of the moisture.


Estimated detection limits are calculated as three times the standard deviation in 40% water and CO2 for a typical scan time of 1 minute. The table below shows the components and the detection limit for components that are visible when running the MultiGas 2030 HiSens. Figure 1 shows two weeks worth of continuous HCl measurements when using the MultiGas 2030 HiSens at a cement plant, demonstrating the very high sensitivity and reproducibility of the instrument.

Component Detection Limit Recommended Range
HCl 30 ppb 0-3 ppm
HF, formaldehyde, N2 O, CH4 , CO 10’s of ppb Application dependent

Emissions Monitoring Applications

  • Cement Kilns
  • Waste Incinerators
  • Electric Generating Utilities
  • Large Combustion Plants
  • Turbine Engines
  • Coal Burning Facilities

Need help?

Contact an Applications Specialist by sending us an email