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US 11,143,589 B2Granted
FTIR spectrometer with cut-off filter for hydrogen sulfide detection
AssigneeMls Acq, Inc.
InventorsMartin L. Spartz, Anthony S. Bonanno, Kelly Renee McPartland
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Abstract
A gas analysis system with an FTIR spectrometer preferably utilizes a long path gas cell, a narrow band detector, and an optical filter that narrows the detection region to measure hydrogen sulfide.
Claims20
A Fourier transform infrared spectrometry system for measuring hydrogen sulfide, comprising:
- a source for generating light;
- an interferometer for receiving the light;
- a sample cell containing a gas sample;
- a detector for detecting the light from the interferometer and after passing through the sample gas;
- a bandpass filter for filtering light prior to being detected the detector including 3,700 cm−1 or 2,700 cm−1;
- and
- a controller for detecting an output of the detector as the interferometer is scanned and processes interferograms to measure a concentration of the hydrogen sulfide in the sample cell.
4 more elements
A spectrometry method, comprising:
- analyzing a gas sample with a Fourier transform infrared spectrometer;
- detecting the light after passing through the sample gas with a detector;
- and
- filtering light prior to being detected to include 3,700 cm−1 or 2,700 cm−1 to measure hydrogen sulfide;
- and
- detecting an output of the detector as an interferometer of the Fourier transform infrared spectrometer is scanned and processing interferograms to measure a concentration of the hydrogen sulfide in the gas sample.
3 more elements
Dependencies are inferred from the claim text.