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Principles of Operation Teledyne API Model T360/T360M Operation Manual
222
7.6.4. Temperature and Pressure Compensation
Changes in pressure can have a noticeable, effect on the CO
2
concentration
calculation. To account for this, the Model T360 software includes a feature
which allows the instrument to compensation of the CO
2
calculations based on
changes in ambient pressure.
The TPC feature multiplies the analyzer’s CO
2
concentration by a factor which is
based on the difference between the ambient pressure of the sample gas
normalized to standard atmospheric pressure. As ambient pressure increases, the
compensated CO
2
concentration is increased.
7.6.5. Internal Data Acquisition System (DAS)
The DAS is designed to implement predictive diagnostics that stores trending
data for users to anticipate when an instrument will require service. Large
amounts of data can be stored in non-volatile memory and retrieved in plain text
format for further processing with common data analysis programs. The DAS
has a consistent user interface in all Teledyne API analyzers. New data
parameters and triggering events can be added to the instrument as needed.
Depending on the sampling frequency and the number of data parameters the
DAS can store several months of data, which are retained even when the
instrument is powered off or a new firmware is installed. The DAS permits users
to access the data through the instrument’s front panel or the remote interface.
The latter can automatically download stored data for further processing. For
information on using the DAS, refer to Section 4.7.
07272B DCN6552