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7. DATA ACQUISITION SYSTEM (DAS) AND APICOM
The T400 analyzer contains a flexible and powerful, internal data acquisition system
(DAS) that enables the analyzer to store concentration and calibration data as well as a
host of diagnostic parameters. The DAS of the T400 can store up to about one million
data points, which can, depending on individual configurations, cover days, weeks or
months of valuable measurements. The data are stored in non-volatile memory and are
retained even when the instrument is powered off. Data are stored in plain text format
for easy retrieval and use in common data analysis programs (such as spreadsheet-type
programs).
The DAS is designed to be flexible, users have full control over the type, length and
reporting time of the data. The DAS permits users to access stored data through the
instrument’s front panel or its communication ports.
The principal use of the DAS is logging data for trend analysis and predictive
diagnostics, which can assist in identifying possible problems before they affect the
functionality of the analyzer. The secondary use is for data analysis, documentation and
archival in electronic format.
To support the DAS functionality, Teledyne API offers APICOM, a program that
provides a visual interface for remote or local setup, configuration and data retrieval of
the DAS (see Section 8.1.1). Using APICOM, data can even be retrieved automatically
to a re
m
ote computer for further processing. The APICOM manual, which is included
with the program, contains a more detailed description of the DAS structure and
configuration, which is briefly described in this document.
The T400 is configured with basic DAS already enabled. The data channels included in
this basic structure may be used as is or temporarily disabled for later or occasional use.
IMPORTANT
IMPACT ON READINGS OR DATA
DAS operation is suspended whenever its configuration is edited using
the analyzer’s the front panel and therefore data may be lost. To prevent
such data loss, it is recommended to use the APICOM graphical user
interface for DAS changes.
Please be aware that all stored data will be erased if the analyzer’s disk-
on-module or CPU board is replaced or if the configuration data stores
there is reset.
06870C DCN6332