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. 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