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The Thermo 55i & 55c hyrdocarbon analyzer is a back-flush gas chromatography (GC) system designed for automated measurement of methane and nonmethane hydrocarbons. The back-flush GC method used by the Model 55i provides a direct measurement of non-methane cdncentrations. This allows accurate and precise measurement of low levels of non-methane hydrocarbons (NMHC), even in the presence of methane at much higher concentrations. The proprietary column design is unaffected by the oxygen content of the sample, provides complete recovery of low volatility compounds and achieves absolute separation of methane from all C2 compounds.

Key Features

  • Improved layout for easier accessibility to components
  • RS 232 Communication System and PC base software
  • 70 second analysis
  • Adjustable Ranges
  • Automatic flame sensing and ignition
  • Data storage and user downloadable software
  • Enhanced user interface with one button programming and large display screen
  • In-line particulate filter
  • Real Time correction of THC Readings
  • Enhanced electronic design optimizes product commonality

Applications

  • In-line particulate filter
  • Enhanced electronic design optimizes product commonality
  • Improved layout for easier accessibility to components
  • RS 232 Communication System and PC base software
  • 70 second analysis
  • Adjustable Ranges
  • Automatic flame sensing and ignition
  • Data storage and user downloadable software
  • Enhanced user interface with one button programming and large display screen
  • Real Time correction of THC Readings

Technical Specifications

Zero Noise - 55c Standard: .1 PPM RMS (300 second avg time)
Minimum Detectable Limit - 55c Standard: .2PPM (300 second avg time)
Zero Drift (24 Hour) - 55c Standard: +/- 1.0PPM
Span Drift - 55c Standard: <.5% reading-24 hrs <1% reading-7days High Level <2% reading-7days
Response Time - 55c 70seconds (30 second avg time)
Preset Ranges - 55i 0 -5, 50, 500 ppm, or 0 - 10, 100, 1000 ppm, or
Zero Noise - 55i 0.025 ppm RMS (300 second averaging time)
Minimum Detectable - 55i 0.050 ppm CH4 - 0.050 NMHC As Propane (300 second averaging time)
Zero Drift - 55i Auto-zero each cycle
Span Drift - 55i <2% Span Value (without Auto Calibration)
Response Time (90%) - 55i ~ 70 seconds
Precision - 55i 2.0% of reading or 50 ppb (whichever is larger)
Linearity - 55i +/-2.0% of span (at concentrations of 10% to 100% of span)
Sample Flow Rate -55i 0.5 lpm, minimum
Makeup Air Flow Rate - 55i 275 ccm to 350 ccm Hydrocarbon free air
Fuel Flow Rate - 55i 25 ccm to 50ccm Hydrogen or ~100-150ccm H2/He Mixture
Carrier Gas Flow Rate - 55i 35 ccm to 70 ccm Nitrogen
Operating Temperature - 55i +15°C to +35°C
Power Requirements - 55i 100 vac, 115 vac, 220-240 vac +/-10%, 50/60Hz, 420W
Outputs - 55i Selectable Voltage, RS232/RS485, TCP/IP, 10 Status Relays, and Power Fail Indication 0-20 or 4-20 mA Isolated Current Output (optional)
Inputs - 55i 16 Digital Inputs (standard), 8 0-10vdc Analog Inputs (optional)
Preset Ranges - 55c Standard: 0-20, 200, 2000PPM
Custom Ranges - 55c Standard: 0-20 to 20000PPM

Dimensions

  US Metric
Dimensions 16.75 x 8.62 x 23 in. -

Weight

  US Metric
Weight 39 17.7