Archives

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

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 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.

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