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Advanced Features Model GFC7001E Carbon Dioxide Analyzer
Teledyne Analytical Instruments 107
7. ADVANCED FEATURES
7.1. SETUP IDAS: USING THE DATA ACQUISITION SYSTEM
(IDAS)
The GFC 7001E/EM Analyzer contains a flexible and powerful, Internal Data Acquisition System (iDAS) that
enables the analyzer to store concentration and calibration data as well as a host of diagnostic parameters. The
iDAS of the GFC 7001E/EM 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 is stored in non-volatile
memory and is retained even when the instrument is powered off. Data is stored in plain text format for easy
retrieval and use in common data analysis programs (such as spreadsheet-type programs).
The iDAS is designed to be flexible, users have full control over the type, length and reporting time of the data.
The iDAS permits users to access stored data through the instrument’s front panel or its communication ports.
The principal use of the iDAS 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 iDAS functionality, Teledyne offers APICOM, a program that provides a visual interface for remote
or local setup, configuration and data retrieval of the iDAS. The APICOM manual, which is included with the
program, contains a more detailed description of the iDAS structure and configuration, which is briefly described
in this manual.
The GFC 7001E/EM is configured with a basic iDAS configuration, which is enabled by default. New data
channels are also enabled by default at their creation, but all channels may be turned off for later or occasional
use.
Note
iDAS operation is suspended whenever its configuration is edited using the analyzer’s front panel and
therefore data may be lost. To prevent such data loss, it is recommended to use the APICOM graphical
user interface for iDAS 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 stored there is reset.
Since all changes to the configuration of the iDAS cause all of the existing data to be erased, it is
recommended to download your stored data prior to making any changes.
7.1.1. IDAS STATUS
The green SAMPLE LED on the instrument front panel, which indicates the analyzer status, also indicates
certain aspects of the iDAS status:
Table 7-1: Front Panel LED Status Indicators for iDAS
LED STATE IDAS 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. iDAS
channels can be enabled or disabled for this period. Concentration data are typically disabled
whereas diagnostic should be collected.
On
Sampling normally.