Reliable Flare Gas Analysis

Best solution for monitoring refinery flare gas and subsequent sulfur dioxide (SO2) emissions as mandated by the EPA Rule 40 CFR 60, Subpart Ja

Our ATOM INSTRUMENT™ FGA-1000™ is an online process analyzer utilizing patented Excimer UV Fluorescence (EUVF) Technology to measure Total Sulfur in refinery flare gas and subsequent sulfur dioxide (SO2) emissions as mandated by the EPA Rule 40 CFR 60, Subpart Ja.  The FGA-1000 has the highest dynamic measurement range of any commercially available analyzer, requiring only a single point calibration without the need for additional sample valves, calibration gases or system hardware. It provides complete TRS Data resulting in the total analysis of all sulfur compounds potentially present in flare gas streams, not just the analysis of a few selected sulfur compounds as with GC-type applications.  Certification or CGA (Cylinder Gas Audit) is seamlessly provided by the incorporated calibration switching configuration and corresponding software menus for easy compliance testing. In addition, the FGA-1000 does not require installation in an enclosed shelter.


  • Designed for High Concentration Flare Gas Applications
  • Single Calibration/Single Range (0-50% and up to 100%)
  • Seamless Integration with GC for EPA Ja Rule Compliance
  • Outstanding Repeatability
  • 50ppm SD or ±2% of the measured value
  • 25ppm SD with 5-min averaging or ±2% of the measured value
  • High Linearity
  • ±2% of full scale (Dynamic Range Dependent)
  • Designed for outdoor installation and use in harsh environments as may be required by the refining, gas processing, and other oil and gas industries

Simplified Design Improve Reliability

Calibration and validation routines are seamlessly incorporated into our operation software. The analyzer has a very fast response time to process changes (within 1 cycle), ensuring proper process monitoring with fast-moving processes. The sample injection system design is simplified resulting in greater reliability and lower maintenance, for example, the sample valve only actuates once per cycle increasing lifetime. Finally, the analyzer results are insensitive to sample buildup or interference from oxygenates present in the sample stream.

Graphical User Interface (GUI)

The SLA software incorporates a user-friendly Graphical User Interface (GUI) designed to be both intuitive and easy to use.  All aspects of analyzer operation are accessible from the Main toolbar utilizing drop-down menu screens. The home screen displays 3 user selectable digital readout and analog bar graphs updated in real-time from the analysis. Run Cycle Status and current timed events are also refreshed in real-time. Major system control elements are also incorporated in this home screen. The calibrate menu allows complete control of calibration and validation processes, including manual, auto calibration, and validation sequencing. Analytical results acquired during these events may be inspected at any time prior to subsequent calibrations.  All other menu screens such as Timed Events, Detector, Analog Output, Digital 1/0 and System Alarm Settings, allow the user to easily monitor or make changes to all aspects of analyzer control and operation. The GUI software also includes user setup and password security, as well as graphics plotting of real-time analysis data and display of historical settings.


  • Process Streams
  • Flare Gas
  • Stack Gas
  • Refined Fuels
  • LPG
  • Natural Gas
Process Insights_ATOM SGA-1000 Analyzer


Americas +1 713.947.9591
EMEA +49 69 20436910
China/APAC +86 400 086 0106



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