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Rosemount™ Flame Ionisation Detector (FID)
rosemount fid
Available as an analyzer module to combine with an MLT analyzer via LON, or as a standalone analyzer integrated into a platform.
Also available as a standard or Hot FID (HFID) for Hydrocarbon measurements. Designed for continuous measurement of hydrocarbon gas concentration, the NGA FID Analyzer Module delivers unmatched measurement accuracy, reliability, ease of use, simplified maintenance, advanced communication capability and flexibility. Key to these attributes is the detector assembly which utilizes Flame Ionization Detection (FID) technology. This allows hydrocarbon measurement from 0 to 1 ppm methane (CH4) to 0 to 5% methane (CH4) with the accuracy of ± 1% of fullscale. This array of ranges provides great versatility.
Rosemount™ Flame Ionisation Detector (FID)


Measurement Range
Mixed Fuel: 0 to 4 ppm as CH4 through 0 to 5% as CH4 Pure H2 fuel: 0 to 1 ppm as CH4 through 0 to 2% as CH4
Power Supply
AC 85 to 264 VAC, 47 to 63 Hz.,150 watts maximum via platform or DC; 24 VDC +/- 5%, 120 watts maximum, direct to analyzer module Ripple and noise: <100 mVpp Line and Load regulation: <+/- 1%
Inside a platform (19.0" rack mountable) or custom installed in a panel
110.0 mm x 208.3 mm x 467.8 mm (4.33” x 8.20” x 18.41”) HWD
Analyzer Module: 10.5 kg (23 lbs.)
With Platform: 20.5 kg (45 lbs.)


  • Fast response – 90% fullscale within 1 second
  • Automatic flame ignition under safe conditions
  • Built-in independent safety shutoff
  • Designed to meet NFPA 496 regulations for continuous dilution purge and automatic fuel shutoff
  • Improved stability and signal-to-noise ratio
  • Modular design allows custom mounting near sample source
  • Advanced diagnostic capabilities
  • Sample flow measurement included as standard