Thermo 55C
Thermo Scientific

Thermo 55C

Pine Item #54387

The Thermo 55i & 55c hydrocarbon 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 concentrations. 

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.


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

In-line particulate filter

Real Time correction of THC Readings

Quantity must be 1 or more
Equipment available for both rental and purchase
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Technical Specifications

Zero Noise - 55cStandard: .1 PPM RMS (300 second avg time)
Minimum Detectable Limit - 55cStandard: .2PPM (300 second avg time)
Zero Drift (24 Hour) - 55cStandard: +/- 1.0PPM
Span Drift - 55cStandard: <.5% reading-24 hrs <1% reading-7days High Level <2% reading-7days
Response Time - 55c70seconds (30 second avg time)
Preset Ranges - 55i0 -5 50 500 ppm or 0 - 10 100 1000 ppm or
Zero Noise - 55i0.025 ppm RMS (300 second averaging time)
Minimum Detectable - 55i0.050 ppm CH4 - 0.050 NMHC As Propane (300 second averaging time)
Zero Drift - 55iAuto-zero each cycle
Span Drift - 55i<2% Span Value (without Auto Calibration)
Response Time (90%) - 55i~ 70 seconds
Precision - 55i2.0% 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 -55i0.5 lpm minimum
Makeup Air Flow Rate - 55i275 ccm to 350 ccm Hydrocarbon free air
Fuel Flow Rate - 55i25 ccm to 50ccm Hydrogen or ~100-150ccm H2/He Mixture
Carrier Gas Flow Rate - 55i35 ccm to 70 ccm Nitrogen
Operating Temperature - 55i±15°C to +35°C
Power Requirements - 55i100 vac 115 vac 220-240 vac +/-10% 50/60Hz 420W
Outputs - 55iSelectable Voltage RS232/RS485 TCP/IP 10 Status Relays and Power Fail Indication 0-20 or 4-20 mA Isolated Current Output (optional)
Inputs - 55i16 Digital Inputs (standard) 8 0-10vdc Analog Inputs (optional)
Preset Ranges - 55cStandard: 0-20 200 2000PPM
Custom Ranges - 55cStandard: 0-20 to 20000PPM
DimensionsUS: 16.75 x 8.62 x 23 in. Metric: 42.5 x 21.8 x 58.4 cm
Manuals & Data Sheets

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