Teledyne 6200T - Sulfides Analyzer - Manual (Page 157)

6200T Total Sulfur Analyzer DAS and AICOM
Teledyne Analytical Instruments 157
7. DATA ACQUISITION SYSTEM (DAS) AND AICOM
The 6200T 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 6200T 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. Using AICOM, data can even be
retrieved automatically to a remote computer for further processing.
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 Analytical Instruments offers AICOM, a
program that provides a visual interface for remote or local setup, configuration and data
retrieval of the DAS. The AICOM manual, which is included with the program, contains
a more detailed description of the DAS structure and configuration, which is briefly
described in this section.
The 6200T is configured with a basic DAS configuration, which is enabled by default.
New data channels are also enabled by default but each channel may be turned off for
later or occasional use. Note that DAS operation is suspended while its configuration is
edited through the front panel. To prevent such data loss, it is recommended to use the
AICOM graphical user interface for DAS changes.
The green SAMPLE LED on the instrument front panel, which indicates the analyzer
status, also indicates certain aspects of the DAS status, as described in Table 7-1
Table 7-1: Front Panel LED Status Indicators for DAS
LED STATE DAS STATUS
Off System is in calibration mode. Data logging can be enabled or disabled for this mode.
Calibration data are typically stored at the end of calibration periods, concentration data are
typically not sampled, diagnostic data should be collected.
Blinking Instrument is in hold-off mode, a short period after the system exits calibrations. DAS
channels can be enabled or disabled for this period. Concentration data are typically disabled
whereas diagnostic should be collected.
On Sampling normally.
Note The DAS can be disabled only by disabling or deleting its individual data
channels.