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11 Micro GC Natural Gas Analyzer
Checkout Information
Checkout Information
Introduction
The Agilent 990 Micro GC - Natural Gas Analyzers are factory tuned on carrier gas helium
including appropriate settings for back flush times for the following channels:
•
HayeSep A
•
4 meter CP-Sil 5 CB
•
CP-Molsieve 5A
•
PoraPLOT U
The final checkout of the Agilent 990 Micro GC - Natural Gas Analyzer is performed with a NGA
Gas Calibration standard and a Universal Gas Calibration standard.
•
The NGA Gas Calibration standard contains nitrogen, methane, ethane, carbon dioxide,
propane, iso-butane, n-butane, iso-pentane, n-pentane, and n-hexane. This natural gas
standard does not contain all components specified for each type of Natural Gas Analyzer.
Therefore, a second checkout sample, the Universal Gas Calibration standard is analyzed on
the Natural Gas Analyzer.
•
The Universal Gas Calibration standard contains helium, neon, hydrogen, oxygen, nitrogen,
methane, ethane, ethylene, carbon dioxide, carbon monoxide, acetylene, propane, methyl
acetylene, n-butane, n-hexane, and n-heptane. Not all components in the Universal Gas
Calibration standard are specified for the Natural Gas Analyzer.
More detailed information about the NGA Gas Calibration standard and the Universal Gas
Calibration standard can be found in
page 160 and
The components specified for each channel are described in
Analyzer A and the Extended Version
Analyzer B and the Extended Version
The NGA Gas Calibration standard and the Universal Gas Calibration standard are shipped with
the analyzer and used by the Agilent Customer Engineer at installation. The factory tuned method,
final chromatogram (Test Report), and the Natural Gas Analyzer User Manual are supplied on the
Analyzer CD.
To perform reference checks on the analyzer, use the NGA Gas Calibration standard or the
Universal Gas Calibration standard. If OpenLAB CDS EZChrom is used, load the method from the
analyzer CD or create a method using the settings from the method pdf-file available on the
analyzer CD. For a quick start, see the method settings for Natural Gas Analyzers listed in
Method Settings for Natural Gas Analyzers
Calibration standard.
To analyze helium on the CP-Molsieve 5A channel, use the Universal Gas Calibration standard for
the checkout. Ensure that the carrier gas argon is supplied and configured before starting the
analysis. For more information on how to configure the carrier gas for the analyzer see
Gas Type Configuration
for CP-Molsieve 5A Channel with Carrier Gas Argon
The NGA Gas Calibration standard and the Universal Gas Calibration standard do not contain
hydrogen sulfide. A reference chromatogram of hydrogen sulfide is included in this manual.
146
Certificate of the NGA Gas Calibration Standard
Certificate of the Universal Gas Calibration Standard
on page 144 and
on page 145.
on page 164. Method settings for this analysis can be found in
on page 161.
Agilent 990 Micro GC - Natural Gas
Agilent 990 Micro GC - Natural Gas
on page 162. Connect and inject the NGA Gas
on page 168.
Agilent 990 Micro GC User Manual
on
Typical
Carrier
Method
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