Year: 2025

The NGC8106 performs on-site, real-time gas analysis and

heating value computation. The 8106 can be used as a total

energy meter with the addition of a multivariable transmitter!

The NGC8106 is a perfect replacement for automatic

samples. The user will enjoy real-time data instead of monthly

averages, and shipping and handling errors have been virtually

eliminated. The NGC8106 is based upon the industry leading

NGC8206 platform.

Innovations include

– Compact design

– Extreme serviceability

– Low installation costs

– Low utility requirements

– Low maintenance

– Unmatched performance

Simple, reliable, easy to service, low cost measurement.

Equipment

The equipment used for this analysis consists of the standard

NGC8209 mounted in a black case. It is recommended that

the unit be left in an operational mode while transporting.

All the valves, gauges, inlet ports, and PCCU32 (the laptop

driven man-machine interface) connectors are bulkhead

mounted on panel to provide the technician with ready access.

Stream averages for the (default¹) 840 last hours, 35 last

days and the most recent last month analyses. Operational

Parameters for the (default¹) last 480 cycles (Diagnostics Report):

– Selected peak times

– Selected peak areas

– Ideal Btu/CV

– Carrier regulator pressure

– Oven temperature

– Ambient temperature

– Sample pressure

– Detector noise values

– Detector balance values

Audit logs (Default¹)

– Last 480 alarms

– Last 480 events

Historical data

The NGC8209 is designed to retain historical data. This data

can be used for custody transfer needs, verify transmitter

operation over time, and provide a limited data backup for

communication link reliability. In addition, various CSV file

outputs are available to download the analysis data into

spreadsheet based company specific data sheets, and

outputs to 3rd party gas accounting packages.

The default¹ memory configuration provides the most recent

480 analysis cycles containing:

– Normalized components

– Un-normalized components

– Ideal Btu/CV

– Real Btu (wet and dry) / CV (superior and inferior)

– Relative density (specific gravity)

– Density

– GPM

– Wobbe index

– Alarms

Stream averages for the (default¹) 840 last hours, 35 last

days and the most recent last month analyses. Operational

Parameters for the (default¹) last 480 cycles (Diagnostics Report):

– Selected peak times

– Selected peak areas

– Ideal Btu/CV

– Carrier regulator pressure

– Oven temperature

– Ambient temperature

– Sample pressure

– Detector noise values

– Detector balance values

Audit logs (Default¹)

– Last 480 alarms

– Last 480 events

Data retained by the NGC8209 can be collected via a remote

communication link or by the laptop PC local operator interface PCCU 32.

Equipment

The equipment used for this analysis consists of the standard

NGC8206 mounted in a powder-coated box. The equipment

used for this analysis consists of the standard NGC8209

mounted in a black case. It is recommended that the unit be

left in an operational mode while transporting.

All the valves, gauges, inlet ports, and PCCU32 (the laptop

driven man-machine interface) connectors are bulkhead

mounted on panel to provide the technician with ready access.

Available options

• Sample and GC Rotometers

• 120/240 V AC / 24 V DC to 12 V DC power supply

• Modular Sample System for Non-pipeline quality natural gas

and Sample transport lag-time needs: Type 4 w/ liquid shut off

• Temperature Compensation Probes:

• Fixed

• Retractable

• Regulators, carrier and calibration blend

• Start up/calibration/validation gas sample (+2% Cal Blend)

• Export crating

• Tool kit

• Various maintenance kits

• On board digital ¼ VGA display with multiple screen access

• USB (Host and Client) and Ethernet ports

• SD memory cards

• Feed-Through heater

• Heat trace internal and external tubing

Standard features

Modular design includes

• Portable GC interface allows user analysis customization

• Modular software – application based plug in software

modules

• Manifold module (internal tubing now replaced by manifold)

• 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)

• USB MMI port connectivity

• Ethernet connectivity

• Lithium battery-backed RAM

• Two remote serial digital communications ports; one local port

• Comprehensive diagnostics and wizards available to users

• Audit-quality historical data; date and time stamped

• Operational fault/warn alarms available

• 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

Description

The Portable NGC analyzes each sample utilizing established

chromatographic techniques. The resulting information

consists of mole percent values for the following:

• Air (N2 thru CO)

• C1

• CO2

• C2

• C3

• IC4

• NC4

• NeoC5

• IC5

• NC5

• C6+

• H₂S optional

The NGC8206 measures a C6+ (back flushed) 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 analyses and energy calculations.

The NGC8209 measures a C9+ (back flushed) peak. Users may

input the results of a comprehensive lab analysis that reflects

the split or ratio of C9 through C12 components. This ratio

can be used in subsequent analyses and energy calculations.

Calculated values include

• Relative density (specific gravity)

• Btu/CV (heating) value

• GPM (gallons of liquid

The truck is moved as close to the sample point as is

practical. A flexible sample line is then uncoiled and attached

to the probe in the flowing natural gas pipeline. If the dew

point of the gas or the weather demands it, this flexible

tubing must be heated. A sample of the gas is extracted from

the probe in the line, purged through the flexible line and then

transported to the analyzer. There it is processed for particle

removal and phase integrity, injected onto the

chromatographic columns where component separation

occurs. These components are then quantified by peak

integration and concentration is calculated. The other data of

interest is then calculated from these concentrations.

The averaged output can be formatted to be accepted by a

3rd party gas accounting software system, allowing

automatic downloads of the analysis data. Analysis done on

site is valuable because:

• Transportation of DOT regulated gas cylinders is avoided

• Time and cost of subsequent laboratory analysis

• Problems with sample handling

• Economic solution for gas quality measurement when the

gas volumes are too low to justify on-line chromatography

Introduction

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 at 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.

The averaged output can be formatted to be accepted by a

3rd party gas accounting software system, allowing

automatic downloads of the analysis data. Analysis done on

site is valuable because:

• Transportation of DOT regulated gas cylinders is avoided

• Time and cost of subsequent laboratory analysis

• Problems with sample handling

• Economic solution for gas quality measurement when the

gas volumes are too low to justify on-line chromatography