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Getting Started
Like any measurement device, it is important to verify that the 4200
FlexScan FTIR is performing properly before using the system to
make critical measurements. The 4200 FlexScan provides both
diagnostic values and performance validation tests to demonstrate
the system's performance. The diagnostic values provide an easy to
understand, quick assessment of the instrument's function. If the
instrument is not functioning properly, one of the diagnostic values
will be out of specification. Typically, the instrument will not allow
data collection if the diagnostic values are out of specification.
Performance validation tests are longer, more involved tests that
measure how well the instrument is working. The tests listed under
'Performance validation' check the instrument's sensitivity
(performance), stability and frequency precision (laser calibration).
Each industry has different requirements for instrument verification.
In general, the diagnostic values should be checked on a daily or
weekly basis. The instrument will not collect data if the diagnostic
values are grossly out of specification, but it is good practice to verify
that the instrument is working properly. Performance validation
should be run on a quarterly or bi-annual basis. Highly-regulated
industries may require the performance validation to be run
monthly, depending on the use of the instrument. The performance
validation verifies the key aspects to the instrument's ability to
measure good data. If the performance validation tests are within
specification, the instrument should provide data that works well
with methods developed for the 4200 FlexScan. As with any
instrument, however, results can always be verified by running a
known sample with the sample specific method.
Diagnostic values
The following values can also be viewed on the Diagnostics page in
the MicroLab Mobile or MicroLab PC software. These values can be
used to determine if the instrument is working properly. They can be
used on a daily basis to determine that the instrument is operating as
intended. In each case, the Optimal value indicates that the system is
running at its intended performance level. The Marginal value
indicates that the instrument is still functioning, but at a lower
performance level. The Critical value indicates that the system is not
working correctly. Contact Agilent technical support for assistance if
there is a problem with your instrument.
Agilent 4200 FlexScan FTIR Operation Manual
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