Emerson Rosemount 370XA, Справочное руководство системы

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370XA Gas Chromatograph System Reference Manual
APRIL 2014 7P00370-H01
4 - 33
In previous generations of gas chromatographs, a daily calibration
was run to verify the correct operation and to account for changes in
measurement on a daily basis. A calibration run is typically configured
to run for 3 analysis cycles of the calibration gas and will change the
response factors.
The main advantage of the validation is to confirm the analysis is
within specifications without changing the calibration factors.
4.4.1.1 Prepare for a validation
Before starting a validation run you must configure the stream that
you intend to use as the validation stream.
The 370XA allows you to assign virtual streams to any of its stream
selection solenoids. By default, the fifth stream is configured as the
validation stream.
1. Start MON2020 and select Streams on the Application menu.
The Streams window opens.
2. Enter the Total Runs and Avg Runs for the validation cycle.
The total runs is the number of analysis cycles that will be run
in total. The average runs is the number of runs that will be
used to average and then validate the data. For example, if the
total runs is 3, and the average runs is 2, the validation cycle
will analyze the validation streams for three cycles, and the last
two cycles will be used to average the results and validate the
measured values. By default, both are configured for one run
only.
3. Select the physical stream in the Stream Valve column that will
be used for the validation gas.
• If the validation is to be done against the calibration gas,
select
Calibration from the Stream Valve drop-down list.