Category: ABB

Introduction

The Portable NGC8209 is a natural gas chromatograph

designed for installation in a vehicle, allowing it to be used

for real-time analysis on any site that can be driven to.

The NGC is easily powered, either from the vehicle’s 12Vdc

system or from a 110VAC inverter. Its low power operation

means you can maintain continuous power on the unit, thus

keeping it at operating temperature and assuring it is ready

for immediate use on site.

From the spot analysis the following are calculated:

– Relative density

– Heating value

– VOS (velocity of sound)

– GPM (gallons of liquid per thousand cubic feet)

– Wobbe index

This data can be used for flow computers, RTU’s, gas

accounting systems, and SCADA systems for the Energy,

AGA3, 7, 8 and 10 calculations t the meter site. This data

output can be a CSV file format so that analysis data systems

can easily incorporate the information. The number of runs

and the number of averages can be selected. 

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® 2000 or XP based

man-machine interface software (PCCU_NGC)

• 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

BENEFITS

The NGC 8209, the C9+ Natural Gas Chromatograph

performs on-site natural gas analysis and heating

value computation using an extended analysis.

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. 

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

• Modular software – application based plug in software modules

• Manifold module (internal tubing now replaced by manifold)

• Analysis section contains stream selection solenoids,

pressure regulation, 32 bit digital detector electronics and

a dual-train chromatograph in a single, replaceable module

• 32 bit digital, low-power controlling electronics, using

Windows CE® (internal to GC unit)

• On board digital ¼ VGA display with multiple screen access

• Microsoft® Windows® based man-machine interface software (PCCU 32)

• Lithium battery-backed RAM

• Two remote serial digital communications ports; one local port

• Comprehensive diagnostics and wizards available to users

• Three-level security for user access control

• Audit-quality historical data; date and time stamped

• Auto-start cycle automatically:

– Stabilizes oven temperature

– Confirms modules’ functions

– Validates/calibrates

– Returns to pipeline streams

• Operational alarms and events, time, and data stamped in a log

• Memory: up to 2.052 GB

• Detectors – constant temperature, glass encapsulated

thermister beads for rugged service and long life. Will not

burn out on loss of carrier.

• Dual 10 port valves have no moving metal parts.

• Low utility usage – low-power, low-carrier, no instrument air required

• On demand or scheduled automatic calibration and diagnostic

Description

Calculations supported

• Gas compressibility per AGA 8

• Real Relative Density (Specific Gravity)

• Btu/CV Value

• GPM (gallons of liquid per thousand cubic ft)

• Wobbe Index

• Methane Number

• Optional: AGA 10 speed of sound, Hydrocarbon Dew Point

Installation

The NGC8207 is a weatherproof device designed for

installation “on the pipe” near to the sampling point. This

means it is acceptable to mount outside – in a temperature

range of 0°F to 130°F (-18°C to 55°C) [provides reliable

operation for -20°F to 130°F (-29°C to 55°C) with low

temperature option] onto a pipeline with 2″ to 12″ pipe sizes

or with an optional pole mount configuration. A cold weather

enclosure is also available if ambient conditions are below

either the sampled gas dew point or the operational

specifications of the unit.

Standard features

Modular design includes

• Modular software – application based plug in software modules

• Manifold module (internal tubing now replaced

by manifold)

• Analysis section contains stream selection solenoids,

pressure regulation, 32 bit digital detector electronics and

a dual-train chromatograph in a single, replaceable module

• 32 bit digital, low-power controlling electronics, using

Windows CE® (internal to GC unit)

• Microsoft® Windows® based man-machine interface software (PCCU 32)

• Lithium battery-backed RAM

• Two remote serial digital communications ports; one localport

• Comprehensive diagnostics and wizards available to users

• Three-level security for user access control

• Audit-quality historical data; date and time stamped

Auto-start cycle automatically

• Stabilizes oven temperature

• Confirms modules’ functions

• Sets valve operation times

• Locates natural gas components

• Sets carrier gas pressures

• Gates natural gas components

• Validates/calibrates

• Returns to pipeline streams

• Operational alarms and events, time, and data stamped in a log.

• Memory: up to 2.052 GB

• Detectors – constant temperature, glass encapsulated

thermister beads for rugged service and long life. Will not

burn out on loss of carrier.

• Dual 10 port valves have no moving metal parts.

• Low utility usage – low-power, low-carrier, no instrument air required

• On demand or scheduled automatic calibration and diagnostics

Calibration options

• Exponential

• Linear

• Multi-point (6 points)

Hydrocarbon Dew Point

Installation

The NGC8206 is a weatherproof device designed for

installation “on the pipe” near to the sampling point. This

means it is acceptable to mount outside – in a temperature

range of 0°F to 130°F (–18°C to 55°C) [provides reliable

operation for –20°F to 130°F (–29°C to 55°C) with low

temperature option] onto a pipeline with 2″ to 12″ pipe sizes or

with an optional pole mount configuration. A cold weather

enclosure is also available if ambient conditions are below

either the sampled gas dew point or the operational

specifications of the unit

Description

The NGC8206 analyzes each sample utilizing established

chromatographic techniques. The resulting information

consists of mole percent values for the following:

• “Air” (Contains N2, Ar, CO and O2 but not CO2)

• C1 CO2 C2 C3 IC4 NC4

• NeoC5 IC5 NC5 C6+

Using process chromatographic techniques, the columns are

back flushed so that the NGC8206 measures a C6+ peak. Users

may input the results of a comprehensive lab analysis that

reflects the split or ratio of C6 through C10 components. This

ratio can be used in subsequent analysis and energy

calculations. Calculated values include:

• Gas compressibility per AGA 8

• Real Relative Density (Specific Gravity)

• Btu/CV Value

• GPM (gallons of liquid per thousand cubic feet)

• Wobbe Index

• Methane Number

• Optional calculations can include: AGA 10 speed of sound

Recommended sample conditioning

system for landfill application

This sample system is designed to bring

the low pressure landfill gas to the NGC at

an increased pressure (10-20 psig) for

injection into the analyzer.

The pressure is increased by a Di-Vac

pump. The operator can adjust the inlet

stream to an appropriate level of around

15 psig. Most of the sample stream will be

vented through the back pressure regulator.

It can be vented to atmosphere or

returned to the process stream since it is

at a higher pressure. The sample stream is

also passed through a sample

conditioning module which insures that

the NGC will be provided with dry,

uncontaminated gas for the analysis.