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Rosemount™ 400A Process Hydrocarbon Analyzer
rosemount 400a analyzer
Rosemount Analytical has designed the 400A Hydrocarbon Analyzer for high sensitivity, stability and safety.
The 400A uses the flame ionization detection method in a field-proven design to provide reliable performance in analysis in high purity gases and trace levels of hydrocarbon contaminants in ambient air or other gases.
Rosemount™ 400A Process Hydrocarbon Analyzer


Power Supply
115 VAC ± 10%, 50/60 Hz (230 VAC ± 10%, 50/60 Hz options), 250 W max
22 pounds (10 kg)
Ambient Temperature
32° to 110°F (0° to 43°C) with less than 36°F (20°C) change per 24 hours


  • Measures as low as 0 to 1 ppm
  • Precision 1% of full scale
  • Digital output display
  • Automatic fuel shut-off
  • Automatic flame-out indicator
  • Automatic sample shut-off (optional)
  • Seven selectable ranges
  • Remote range change control capability
  • Enhanced system diagnostics
  • Convenient design
  • Ease of operation
  • Front panel digital display