Thermo Scientific™

Model 48i-HL CO Analyzer

Related applications:


Measure high levels of CO emission with the Thermo Scientific™ Model 48i-HL CO Analyzer.

Using gas filter correlation technology, the 48i-HL analyzer is a gas filter correlation analyzer which provides linear measurements of carbon monoxide in sample air up to 20,000 ppm.

Back to top

The Model 48i-HL operates on the principle that carbon monoxide (CO) absorbs infrared radiation at a wavelength of 4.6 microns. Because infrared absorption is a nonlinear measurement technique, it is necessary for the instrument electronics to transform the basic analyzer signal into a linear output. The 48i-HL uses an exact calibration curve to accurately linearize its output over any range up to a concentration of 20,000ppm.


  • Gas filter correlation technology
  • Standard dual range and auto ranges
  • Self aligning optics
  • Temperature and pressure correction
  • User settable alarm levels for concentration

iSeries Advantage:

  • Ethernet connectivity for efficient remote access
  • Enhanced user interface with one button programming and large display screen
  • Flash memory for increased data storage and user downloadable software
  • Enhanced electronics design optimizes product commonality
  • Improved layout for easier accessibility to components