ATOM SGA-1000 Sulfur in Gas Analyzer for Total Sulfur

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ATOM Instrument offers the most versatile Total Sulfur analyzers available.

The ATOM SGA-1000 is an online process analyzer utilizing patented Excimer UV Fluorescence (EUVF) technology to measure total sulfur in a variety of refinery process applications.

The SGA-1000 provides complete analysis of all sulfur compounds potentially present in process gas streams and not just a few selected sulfur compounds as with some GC/TDL applications. Calibration and Validation functionality is seamlessly incorporated with associated analyzer software for easy compliance or verification testing.

The SGA-1000 has the fastest analysis time of any commercially available analyzer allowing user-defined, multiple cycle averaging to improve analyzer performance. The analyzer operating software is both intuitive and user-friendly. In addition, the ATOM SGA-1000 only requires bottled air for normal operation and does not require installation in an enclosed shelter.

Performance Graphs

Typical Applications for SGA-1000:

  • Natural Gas
  • LNG
  • Catalyst Protection


Key Features
  • Accurate Low Level Sulfur Measurement (<1 ppm)
  • Meets ASTM D6667 performance requirements
  • Dual Stream Capability
  • Measurement range available up to 100%
  • Outstanding Repeatability :
    • 200ppb SD or ±2% of measured value
    • 100ppb SD with 5-min averaging or ±2% of measured value
  • High Linearity :
    • ±2% of full scale (Dynamic Range Dependent)
Excimer UV Fluorescence

The Model SGA-1000 is based on field proven EUVF technology that is exceptionally stable and utilizes an excitation wavelength that achieves high detection sensitivity. The SGA-1000 is an excellent fit for applications in the 0-100 ppm range and is exceptionally stable, even at concentrations lower than 1 ppm. The SGA-1000 is designed for outdoor installation and use in harsh environments as may be required by the Refining, Gas Processing and Natural Gas industries.

Graphical User Interface

The SGA 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 the calibration and validation processes, including manual or auto calibration and validation sequencing. Analytical results acquired during calibration events may be inspected at any time prior to any subsequent calibration.

All other menu screens such as Timed Events, Detector, Analog Output, Digital I/O 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 plotting of real-time analysis data and historical settings.

Analyzer Response

The ATOM SGA-1000 is specifically designed for high speed analysis and a fast response time. This feature enables more rapid, real-time measurements to be performed allowing flare events and emissions to be more accurately monitored and quantified. Emission variations and detail, not apparent with slower responding analyzers, may either be revealed or become more apparent. Although a 100-seconds cycle time is standard, the ATOM SGA timetable can be easily reconfigured for a cycle time as fast as 60-seconds, should the need for higher speed be necessary or desired.