Offers a unique blend of proven technology with innovative hardware & software design

The Model 55C is designed to provide a direct measurement of both methane and non-methane hydrocarbons without the use of scrubbers or catalysts from 0-5,000ppm. The proprietary column design is unaffected by oxygen and provides complete recovery of low volatility compounds.

Product Details

The Model 55C, Direct Methane, Non-Methane Hydrocarbon Analyzer, joins Thermo's line of hydrocarbon detection instrumentation. Offering a unique blend of proven technology with innovative hardware and software design, the Model 55C possesses unsurpassed sensitivity, repeatability and specificity in ambient and source applications.

Direct measurement always produces the most precise result. That's whytheModel 55C is designed to provide a direct measurement of both methane and non-methane hydrocarbons (NMHCs). Unlike instruments that use scrubbers or catalysts to measure only methane and total hydrocarbons, the Model 55C back-flushed gas chromatography system allows reliable measurements of NMHCs at sub-ppm concentrations of methane. In addition, the Model 55C's proprietary column design can achieve complete separation of methane from all C2 compounds, is unaffected by the oxygen recovery of low volatility compounds that other instruments may miss.

Added to the accurate reporting is an easy to read, intelligently designed display that allow the operator to monitor instrument status and current concentration readings at a glance. The high visibility vacuum fluorescent display indicates the current ppm reading, the sample injection time, the instrument operation mode and various status messages so you always know exactly what you are getting for results.

Thermo's menu-driven software, which enhances all of our products, makes it simple to establish operating parameters and to control calibration and measurements. The menu is easy to access using the front panel controls, or by the optional RS-232 communications system and PC based software. The Model 55C also provides analog status and control lines for use with an external data system and it may be configured for continuous, fully automated, stand-alone operation.

Key Features

• Direct Methane, Non-methane measurement (non-subtractive)
• Complete Separation of Methane from all C2 compounds
• Measurement from C1 throught C12 (minimum)
• Detector and Sampling System Heated to 150°C or more
• Independent adjustment of measurement and recorder output range
• In-line particulate filter
• No catalysts to wear out or be poisoned
• No requirements for cryogenic materials


Specifications

Lower Detectable Limit	20 ppb methane; 25 ppb NMHC as propane
Accuracy	0-20, 200, and 2000 ppm (other ranges optional)
Precision	2% of measured value or 0.01 ppm
Span Drift (24 hour)	2% of span concentration
Zero Drift	less than 0.01 ppm per 24 hours
Analysis Time	70 seconds or less
Sample Flow Rate	500 ml per minute minimum
Oven Temperature	150-200°C detector oven, 65°C column oven
Power Requirements	90-110 VAC, 105-125 Vac, 210-250 Vac, 500 Watts
Dimensions	16.75" (W) x 8.62" (H) x 23" (D)
Weight	50 lbs.
Outputs	Methane, NMHC, Total Hydrocarbon, and FID signal, User-selectable concentration ranges, 0-10V, 5V, 1V, or 0.1 (standard), 4-20mA (optional), RS232 (optional)