ABB NGC8209 Natural gas chromatograph

The NGC 8209, the C9+natural gas chromatograph performs on-site natural gas

analysis and heating value computation using an extended analysis.

Benefits

On-line chromatograph techniques are used to provide N2

through C6+ data while a third column train is used to

separate the C6+ fraction. The NGC 8209 utilizes the modular

and scaleable XSeries software framework to integrate data

from a third analysis train into the standard C6+ analysis of

the Natural Gas. The extra chromatographic information is

provided as NC6’s, NC7’s, NC8’s and C9+ to provide this

“extended analysis”. Heating value (CV), Wobbe, Relative

Density (SG) and other calculations are performed using the

combined analysis data in a similar manner to the NGC 8206.

Hydrocarbon Dew Point (HCDP) and Speed of Sound (SOS)

calculations are available options.

A single computer controller seamlessly processes all this

data for various outputs. It also handles the stream switching

and the timing for the sample. Incorporating a state-of-the-art

built-in 32 bit digital controller, three electronic carrier

pressure regulators, oven-mounted sensors and advanced

low-noise digital electronics, the NGC 8209 performs with

unparalleled repeatability and sensitivity. The NGC 8209

provides custody transfer/metrology quality Chromatography

for heating value and composition measurement. It provides

the user with a GC that is lower in cost, easier to install and

commission, and less costly to operate.

Standard features

Modular design includes:

− Three analysis trains, two for N2 through C6+ and one for

the C6 through C9+

− Modular software – application based plug-in software

modules

− Manifold modules

− Analysis sections contain stream selection solenoids,

temperature and pressure regulation, 32 bit digital detector

electronics, replaceable column / valve modules and a low

power 32 bit digital controller, using Windows CE® (internal

to GC unit)

− Microsoft® Windows® based man-machine interface

software (PCCU)

− Lithium battery-backed RAM

− Two remote serial digital communications ports; one local

port (USB Client)

− One USB Host and one Ethernet port

− Comprehensive diagnostics and wizards available to users

− Three-level security for user access control (Read only,

Operate and Read/Write)

− Audit-quality historical data; date and time stamped

Standard Calculations;

− US and SI:

− Heating value

− Relative density

− GPM

− Wobbe

− Methane-number

− Auto-start cycle automatically after power failure:

− Stabilizes oven temperature

− Confirms modules’ functions

− Checks for operational alarms

− Returns to pipeline streams

− Operational alarms available with each analysis cycle.

− Detectors - constant temperature, glass encapsulated

thermister beads for rugged service and long life. Will not

burn out on loss of carrier.

− 10 port valves have no moving metal parts in each analysis

unit

− Low utility usage - low-power, low-carrier, no instrument air

required

− On demand or scheduled automatic calibration and

diagnostics

− Continuous monitoring for alarms

− On board digital ¼ VGA display with multiple screen access

Standard options

− Sample Conditioning Modules

− Calculation packages (eg, Hydrocarbon Dew point via

SRK and Peng-Robinson, including: 4 pressures and the

Cricondentherm)

− SD memory cards for raw chromatogram storage

− Feed-Through heater for colder operations or high dew

point gas sampling