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4)
Compare normalized % for each component to the component and percent listed
on the calibration blend bottle. Component percentages should be relatively
similar.
There will not be any comparisons for C6+ individual
components. There may be values in the Normalized column
for hexane through Decane, but this is based on the C6+
configuration entered in Stream Setup. For comparison
purposes, use the components called heavies.
5)
Select
Next
to verify heavy components on Chrom-1.
6)
Verify that the appropriate components are visible and labeled. For the standard
C6+ application, the user should see C6+, C3, IC4, nC4, neoC5, iC5 and nC5.
The 2nd peak from left that looks like two peaks is a composite peak of C2- and
is not used in calculations.
7)
Select
Next
to verify light components on Chrom-2.
8)
Verify that the appropriate components are visible and labeled. The user should
see N2, C1, CO2, and C2. The 1st peak on the left is a composite peak of C3+
and is not used in calculations.
9)
Select
Next
to begin the process stream analysis. Select
Run
on the left side of
the screen to begin the first process stream in the sequence. The buttons beside
Run should turn blue, the cycle clock
will begin, and the user should see
animated gas running on the process stream.
4.5.7
Start-up Completion
1)
The unit should continue to cycle through all enabled streams performing
analysis and producing data.
2)
Totalflow recommends that the unit be allowed to run at least eight hours before
calibration to allow unit to stabilize.
3)
Select
Close
to complete the Start-up Wizard and return to the PCCU Local
Analyzer Operation
screen. If completed satisfactorily, the Start-up Wizard
should not re-appear when connecting to unit. However, should the user like to
review or make changes, they may re-enter the Wizard by selecting
NGC Start-
up Wizard
from the Help drop-down menu.
4.6 Calibrating the NGC
The NGC is factory-calibrated and should not require that a calibration be
performed immediately. It is recommended the unit operate for a period of eight
continuous hours before a field calibration.
At that time, a field calibration should be performed. This will allow adjustments
due to the location’s barometric pressure and other factors.
A calibration cycle includes purge cycles
and multiple calibration cycles
for
averaging. The system defaults to stream 4 (cal stream), two purge cycles
and
three calibration cycles. When calibration is complete a thorough examination of
the results should follow.
Allow the NGC to run for a minimum of eight hours before a
field calibration is performed.
4.6.1
Instructions
1)
From the
Analyzer Operation screen, select
Cal
.